Re: [Flexradio] test message

[Graham Haddock]

Test passed.

On Fri, Jul 21, 2017 at 9:19 AM, Tim Ellison 
wrote:

>
> --
> Tim Ellison
>
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Re: [Flexradio] Remote on / 3.3v gpio

[Graham Haddock]

Jason:

You are pulling a line to ground, which is a 2.7K resistor to internal
+3.3V.

So, if your GPIO line can pull 1.2 mA to ground and keep it a logic 'low'
then the GPIO line should work directly.

Make sure your ground systems are tied together.
Make sure you understand what the system will do if you have power on the
radio, and no power on the Linux board. (It might turn the radio on.)

--- Graham

==

On Mon, Aug 15, 2016 at 10:59 AM, Jason Cooper 
wrote:

> All,
>
> We recently installed my Dad's 6500 in my rack.  He's able to remote in
> fine using openvpn bridging.  After fixing packet de-fragmentation
> timeouts (good job, Windows.  :-/), we're now working on remotely
> turning the radio on and off.
>
> I have an RPC that can control the AC to the power supply, but that seems
> a little harsh.
>
> So, I have an embedded Linux board (Openblocks A6) that sports 8 gpios
> on an external IDC header.  I can control the gpios from userspace,
> which means I can give my Dad a simple ssh script to run to turn the
> radio on and off.  My problem is:
>
> echo 28 >/sys/class/gpio/enable
> echo low >/sys/class/gpio/gpio28/direction
>
> *magic happens*
>
> Flex remote ON toggled.
>
>
> I've looked all over, and it's not clear in the docs.  Does the remote
> on RCA connector need the pin shorted to ground (I need to sink
> current)?  Or, does it need the RCA pin dropped to 0v wrt the RCA
> ground?
>
> If it's the former, I need to build a circuit.  If the latter, I
> *should* be able to wire the GPIO up to the RCA pin.
>
> Do I need to build a circuit?
>
> thx,
>
> Jason.
>
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Re: [Flexradio] What is the input impedance for RX1 and RX2?

[Graham Haddock]

50 Ohms, nominal, at the frequency band(s) being received at that point in
time.
You didn't say which FlexRadio you were talking about, so the out of band
story can be quite different, depending on the presence and tuning of
bandpass filters.

--- Graham

On Mon, Nov 30, 2015 at 6:53 PM, Mark Lunday  wrote:

> Is it 75 or 50 ohms?  Thanks
>
> Mark Lunday, WD4ELG
> Greensboro, NC  FM06be
> wd4...@arrl.net
> http://wd4elg.blogspot.com
>
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Re: [Flexradio] Should not use amplified loop with 6xxx XTVR port?

[Graham Haddock]

In our experience, the preamp that comes with the Pixel Loop is quite
rugged, and +10 dBm is unlikely to hurt it.
Particularly if you have hooked up the transmit inhibit/disconnect line
they provide for turning off the preamp
when transmitting.

On the other radios, use an auxilliary receive input port.  On the 6300,
your only choice is the transverter port.
Use the transmit key inhibit input port on the PixelLoop "power injector".
Just try to remember not to transmit into
the preamp, but unlikely to harm anything.

--- Graham / KE9H

==

On Fri, Jul 17, 2015 at 7:12 AM, Samuel Strongin 
wrote:

> I would use my second antenna port and open the second slice ,and make
> sure the transmit is set to the proper antenna . Sam kf4yox
>
> Sent from my iPhone
>
> > On Jul 17, 2015, at 6:53 AM, Zack Schindler  wrote:
> >
> > I am considering selling my 5000 and getting a 6300. Last night I was
> > reading the SmartSDR SW guide and I found this on page 79, "The XVTR port
> > is not recommended as a receive antenna port if an external preamp is
> used
> > on its antenna. Transmission on the XVTR port could put up to +10 dBm of
> > reverse power into the connected preamp."
> >
> > My RX loop is a Pixel and it has a power supply that provides DC to the
> > preamp and goes between the rig and the antenna. Can I assume that I
> really
> > should not use this antenna with a 6300 and if so is there any good way
> to
> > use this antenna?
> >
> > 73
> > Zack
> > N8FNR
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Re: [Flexradio] Calibrate 5000 S Meter

[Graham Haddock]

If you have a friend with a calibrated RF signal generator, I would check
it before I
would send it in for re-calibration.

--- Graham / KE9H

==

On Fri, Jul 10, 2015 at 3:33 PM, Samuel Strongin 
wrote:

> What makes you think the 9800 is correct , I'm willing to bet it is the
> flex that is correct .
>   Kf4yox
>
> Sent from my iPhone
>
> > On Jul 10, 2015, at 4:14 PM, Harry Hahn via FlexRadio <
> flexradio@flex-radio.biz> wrote:
> >
> > It appears that my 5000 S Meter is at least 10 db shy of where it needs
> to be. This is based on comparison to my Icom 9800. I hear everything well
> and pre amp works fine. Is there a process to recalibrate the S Meter???
> > Harry
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Re: [Flexradio] Mic Cord

[Graham Haddock]

You need the 8 pin Foster, not the 8 pin RJ-45.

--- Graham / KE9H

On Sun, Jun 14, 2015 at 1:08 PM, Mike Rhodes  wrote:

>
>
>
> Seem  to remember something about the mic common lead vs the shield
> connections and RFI or is that just on the legacy radios?
>
> Mike / W8DN
>
>
> On 6/14/2015 1:36 PM, Dave wrote:
>
>> Should be the Heil CC-1-Y cable.
>>
>> 4 pin XLR to 8 pin Yaesu.
>>
>> Dave wo2x
>>
>>
>> On 6/14/2015 1:30 PM, David Fisher wrote:
>>
>>>
>>>
>>>
>>>
>>> I have just purchased a 6300 which made my HM Heil Pro obsolete
>>> because of
>>> the cord connections . can anyone recommend where I can get a new
>>> cord that
>>> is compatible with the 6300 and the Heil mic?
>>>
>>>
>>> Thanks . Don
>>>
>>>
>>> VA6FH
>>>
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Re: [Flexradio] (no subject)

[Graham Haddock]

Hi Al:
--- Graham

==

On Thu, Sep 11, 2014 at 12:06 PM, Alan P. Zabarsky  wrote:

>
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Re: [Flexradio] External 10 MHz reference input for 6700?

[Graham Haddock]

Jerry:

Yes.

When the radio boots, the current software will auto-detect the presence of
an external 10 MHz
reference input that is above the minimum input level and use it instead of
the internal OCXO (6700)
or internal TCXO (6500).

It does this at boot time, so if you apply the 10 MHz input after the unit
is already running, it won't use
the external input until the next re-boot.

If the radio is using the external input, and you remove it during
operation, the radio will fall back to
the internal reference within one second.  If the external 10 MHz then
re-appears, it will not be used
until the next re-boot.

--- Graham / KE9H

==


On Mon, May 19, 2014 at 10:46 AM, Jerry Flanders wrote:

>  And the external GPS can be used with present software, right?
>
> Jerry W4UK
>
>
> At 10:59 AM 5/19/2014, Graham Haddock wrote:
>
> Hi Jerry:
>
> The 6700 has an external 10 MHz input on the rear panel.  It is an RCA
> jack on the upper left
> side of the RCA jack cluster on the rear of the radio.
>
> Input level specs are +4 dBm  (1.0V) minimum, to +15 dBm maximum.
>
> If you would like to download the hardware reference manual for this
> product,
> please go to our website, and look under "Documentation"
>
> 73's
> --- Graham / KE9H
>
>
> ==
>
>
> On Mon, May 19, 2014 at 9:46 AM, Jerry Flanders 
> wrote:
>  In the 6700 rear panel views, I don't see any input for an external 10
> MHz GPS reference. I already have a Trimble Thunderbolt unit I use with my
> 5000 and would like to use it with a 6700.
>
> Do I have to get the Flex GPS option to get GPS stability?
>
>
> Jerry W4UK
>
>
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Re: [Flexradio] External 10 MHz reference input for 6700?

[Graham Haddock]

Hi Jerry:

The 6700 has an external 10 MHz input on the rear panel.  It is an RCA jack
on the upper left
side of the RCA jack cluster on the rear of the radio.

Input level specs are +4 dBm  (1.0V) minimum, to +15 dBm maximum.

If you would like to download the hardware reference manual for this
product,
please go to our website, and look under "Documentation"

73's
--- Graham / KE9H


==


On Mon, May 19, 2014 at 9:46 AM, Jerry Flanders wrote:

> In the 6700 rear panel views, I don't see any input for an external 10 MHz
> GPS reference. I already have a Trimble Thunderbolt unit I use with my 5000
> and would like to use it with a 6700.
>
> Do I have to get the Flex GPS option to get GPS stability?
>
>
> Jerry W4UK
>
>
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Re: [Flexradio] WHAT DOES THE TAB IN THE HEADER ..... HEROS FOR?

[Graham Haddock]

Dale:

That is for control of a "HEROS" brand preselector.

http://herostechnology.co.uk/pages/products.html

Some of our European customers wanted to have additional front end
selectivity,
probably because of nearby shortwave broadcast stations.

Not commonly seen in the U.S.

--- Graham / KE9H

==


On Sun, Apr 6, 2014 at 2:18 PM,  wrote:

> I HAVE ,IN THE SET UP LINE ON THE TOP OF THE 2.7.2 header, AT THE RIGHT
> END A LABEL MARKED, HEROS.  when clicked on a screen appears called
> preselector with band and antenna choice. I have no reference in the  2.0
> manual. can some one explain the whole thing to me?
> thanks
> dale wt4t
>
>
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Re: [Flexradio] fkex 6500

[Graham Haddock]

Jim:
On the internet, they hang out on the Flex Community.

https://community.flexradio.com/flexradio

--- Graham / KE9H

==


On Tue, Mar 18, 2014 at 4:19 PM, Jim Howard  wrote:

> Where do the people with the new flexs, 6500/6700
> hang out.
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Re: [Flexradio] www.flexradio.com down?

[Graham Haddock]

Yes, the web site is down.
The elves are hard at work to get it back online.

--- Graham / KE9H
Flexradio Systems

==


On Tue, Feb 18, 2014 at 2:31 PM, Dale Hankins  wrote:

> Folks I have emailed flex they have not responded.
>
> Sent from my iPad
>
> > On Feb 18, 2014, at 1:59 PM, Alan  wrote:
> >
> > Also down here.
> >
> > Alan
> > WA4SCA
> >
> > Sent from my computer keyboard.
> >
> >
> >
> > <-Original Message-
> > mailto:flexradio-boun...@flex-radio.biz] On
> >  >  >  >  > <
> >  >  > <
> >  > <
> >  > <___
> >  >  >  > http://www.mail-archive.com/flexradio%40flex-radio.biz/
> > http://kc.flexradio.com/  Homepage:
> >  > <
> >
> >
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Re: [Flexradio] 60M channels - Canada

[Graham Haddock]

All:

Actually this reflector is still monitored by Flexradio, but Tim, Greg and
Gerald
are all down in Orlando for the Hamfest Thursday through Sunday, so they are
not able to watch the reflectors or the "Community" as close as they
normally
do.

--- Graham / KE9H

==


On Fri, Feb 7, 2014 at 12:15 PM, Michael Babineau wrote:

> Mike :
>
> I am running the latest version of PowerSDR with a Flex-1500 and I already
> have 60m.
> This is a fairly new 1500 purchased last fall from RadioWorld.
>
> A nice feature is repeatedly clicking on the 60m band button cycles
> through the "channels" so
> you don't have to remember the frequencies or manually store them yourself.
>
> Michael  VE3WMB
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Re: [Flexradio] Preamp on 10 meters backwards

[Graham Haddock]

Maury::

If you are doing this connected to an antenna, then if you add preamp gain,
and
the noise floor does not move downwards, it means that you can already get
down to the
atmospheric noise floor without the improvement in noise figure a preamp
brings,
and the preamp is not helping you.  More likely hurting you by bringing an
additional non linear element into the signal chain and you are also just
throwing
away dynamic range.

--- Graham

==


On Wed, Jan 29, 2014 at 5:57 PM, Maury Guzick  wrote:

> Graham,
>
> So, why does not then work that way on any other band; I checked them all.
>
> Maury
>
>   ------
>  *From:* Graham Haddock 
> *To:* Maury Guzick 
> *Cc:* FlexRadio Reflector 
> *Sent:* Wednesday, January 29, 2014 5:45 PM
> *Subject:* Re: [Flexradio] Preamp on 10 meters backwards
>
> Maury:
>
> If you are referring to the panadaptor noise floor moving down in level as
> you increase
> preamp gain, then that is how the world is supposed to work.
>
> A real signal should stay the same absolute (calibrated) level.  And the
> noise floor
> should drop as the signal to noise ratio improves.
>
> In an uncalibrated radio (like most analog radios) the signal inside the
> radio gets louder
> when you turn on the preamp, and the S-Meter might go up, but the signal
> coming in your
> antenna connector did not actually get stronger, so your S-Meter is lying
> to you.
>
> A calibrated radio (like the Flex SDRs) will tell you what the actual
> level of the incoming
> signal is.
>
> As you increase gain, you are improving the noise figure of the radio, and
> you can
> see further down in absolute level.  So the panadaptor noise floor is
> accurately
> showing you what is happening.
>
> The changes in gain from turning the preamps on or off are all calculated
> into the
> display, retaining absolute signal level calibration.
>
> --- Graham / KE9H
>
> ==
>
>
> On Wed, Jan 29, 2014 at 5:09 PM, Maury Guzick  wrote:
>
> Hi all...staying warm I hope.
>
> I finally got around to up dating to Pwr SDR 2.7.2
>
> Install went without a problem.
>
>
> But, I have noticed that the set up for the Preamp on 10 meters is
> backwards. I have the highest signal strength on Attn. and it progressively
> decreases in strength as I move it to Pre2.
>
>
> Anyone else with this issue?
>
> 73
>
> Maury
> W5IO
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Re: [Flexradio] Preamp on 10 meters backwards

[Graham Haddock]

Maury:

If you are referring to the panadaptor noise floor moving down in level as
you increase
preamp gain, then that is how the world is supposed to work.

A real signal should stay the same absolute (calibrated) level.  And the
noise floor
should drop as the signal to noise ratio improves.

In an uncalibrated radio (like most analog radios) the signal inside the
radio gets louder
when you turn on the preamp, and the S-Meter might go up, but the signal
coming in your
antenna connector did not actually get stronger, so your S-Meter is lying
to you.

A calibrated radio (like the Flex SDRs) will tell you what the actual level
of the incoming
signal is.

As you increase gain, you are improving the noise figure of the radio, and
you can
see further down in absolute level.  So the panadaptor noise floor is
accurately
showing you what is happening.

The changes in gain from turning the preamps on or off are all calculated
into the
display, retaining absolute signal level calibration.

--- Graham / KE9H

==


On Wed, Jan 29, 2014 at 5:09 PM, Maury Guzick  wrote:

> Hi all...staying warm I hope.
>
> I finally got around to up dating to Pwr SDR 2.7.2
>
> Install went without a problem.
>
>
> But, I have noticed that the set up for the Preamp on 10 meters is
> backwards. I have the highest signal strength on Attn. and it progressively
> decreases in strength as I move it to Pre2.
>
>
> Anyone else with this issue?
>
> 73
>
> Maury
> W5IO
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Re: [Flexradio] Flex-1500 Overdriving in Some Bands

[Graham Haddock]

Mark:

What do you think 100 percent of power means on PSK-31?

What is the reference for the tests you are running?

--- Graham / KE9H

==


On Fri, Oct 18, 2013 at 7:08 AM, Mark Griffith wrote:

> Recently, I was working PSK31 on my Flex-1500 with other stations, and
> someone came on
> my frequency and announced in a not very nice way that was I a lid and
> splattering all over the band.  I had not had any comments from anyone I
> had worked before, so I was a little concerned if he was right.  So, I
> bought the PSKMETER kit and assembled it.  After running it and testing
> my signal, sure enough, I was splattering quite a bit.  This surprised
> me as I set my sound levels using the ALC meter was always 0db or
> less and yielded full output power.
>
> To better get an idea of what was going on, I setup the SDR 2.6.4 two-tone
> test to output two tones, 31hz apart, like 1000hz and 969hz to simulate the
> PSK31 signal.  Using PSKMETER and a dummy load to limit stray RF signals, I
> tested on common PSK frequencies on all the bands.  All tests were done
> with no VACs enabled, and just using the internal two-tone test so over
> driving by another software program was eliminated.
>
> Here's what I found:
>
> 80m Starts over driving above 40% power
> 40m Starts over driving above 30% power
> 30m Starts over driving above 65% power
> 20m Starts over driving above 85% power
> 17m Starts over driving above 75% power
> 15m No over driving at up to 100% power
> 12m No over driving at up to 100% power
> 10m Starts over driving above 35% power
> 6m  No over driving at up to 100% power
>
> In all cases, the meter for EQ, Mic, Leveler, Lev Gain, ALC, etc never was
> any other value than zero.
>
> I have tried to work with FlexRadio support, and they gave me the
> run-a-round, saying to try this or thateven to try using the transmit
> filter to limit the bandwidth I am transmitting to eliminate the splatter.
> I would like it if they just admit that the hardware is causing the
> problem, but I have not received any answer to that question.
>
> I had the TX/RX board replaced last summer because of an unfortunate
> lightening strike.  I'm wondering if this board is suspect, but they won't
> answer.
>
> Has anyone else seen this issue of over driving on some frequencies with
> the 1500?
>
> Lucky for me I use JT65 and JT9 modes most of the time now, and they are
> far less susceptible to splatter than PSK, and my QSOs seem to bear out
> that my 5 watt Flex-1500 and SkyWire antenna work pretty well.  I recently
> made two contacts from Missouri to Western Australia, one on 20 meters and
> the other on 40 meters, a distance of over 10,000 miles.
>
>
> Mark
> KD0QYN
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Re: [Flexradio] Powered Speaker Recommendation for Flex 5000 (Roger Cole)

[Graham Haddock]

BEWARE !!!
Bose Companion Series I speakers work great.  (But are no longer
manufactured.)
Bose Companion Series II speakers work great. (But are no longer
manufactured.)
Bose Companion Series III speakers were redesigned for switching "Class D"
audio amplifiers and generate a horrible amount of RF interference in your
shack.

--- Graham / KE9H

==



On Thu, Oct 10, 2013 at 9:49 AM, Greg Jurrens  wrote:

> George:
>
> We use Bose Companion Series bookshelf speakers for the K5FRS shack and for
> all our hamfests.  Never had an issue.
>
> 73,
> Greg - K5GJ
>
>
>
> On Thu, Oct 10, 2013 at 1:39 AM,  wrote:
>
> >
> > I like to listen to music while in the shack working on my computer hence
> > I bought Pioneer S-DJ05 powered studio monitors which have the advantage
> of
> > having 4 switchable inputs.
> > Although not cheap (nor are the Genelecs proposed earlier) they are not
> > prone to RFI at all and really provide a clean, crisp audio
> representation.
> >
> > ___
> > FlexRadio Systems Mailing List
> > FlexRadio@flex-radio.biz
> > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
> > Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/
> > Knowledge Base: http://kc.flexradio.com/  Homepage:
> > http://www.flexradio.com/
> >
>
>
>
> --
> Greg Jurrens - K5GJ
> VP, Sales and Marketing
> FlexRadio Systems
> 4616 W Howard Lane Ste 1-150
> Austin, TX 78728
> T: 512-535-4713 x203
> E: g...@flexradio.com
> SKYPE: WD0ACD
> “Tune in Excitement” ™
> PowerSDR(TM) is a trademark of FlexRadio Systems
> Web: www.flexradio.com 
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Re: [Flexradio] Is the Flex-Radio website down?

[Graham Haddock]

All:

The server providing www.flexradio.com went down Saturday about noon.
It has been up since this morning, but the service bureau had to move it
to a new server/IP address to get it back on line.  It will take as much as
24 hours for the new address to propagate through the DNS system.

In the mean time, if you are having withdrawal symptoms, not being able
to get to the web site, or just have to enter an order on the website today,
you may temporarily access it at

 http://198.252.75.117

:-)

73's
--- Graham / KE9H

==


On Sun, Sep 1, 2013 at 11:47 AM, Russ Hines  wrote:

> Not that, but could be a DNS server having problems.
>
> Thanks, all, I'll assume it's not a local issue here.
>
> 73,
> Russ
> WB8ZCC
>
>
>
> "Of liberty I would say that, in the whole plenitude of its
> extent, it is unobstructed action according to our will. But
> rightful liberty is unobstructed action according to our will
> within limits drawn around us by the equal rights of others. I do
> not add 'within the limits of the law,' because law is often but
> the tyrant's will, and always so when it violates the right of an
> individual." --Thomas Jefferson to Isaac H. Tiffany, 1819.
>
> On 9/1/2013 12:31, Rich - W3ZJ wrote:
>
>> It seems to be down. I doubt they have changed their IP address so it
>> wouldn't be a DNS issue.
>>
>> 73, Rich - W3ZJ
>>
>> Russ Hines wrote:
>>
>>> Is the site down, or broken DNS???
>>>
>>> Having difficulty resolving http://www.flex-radio.com
>>>
>>> Anyone else?
>>>
>>> 73,
>>> Russ
>>> WB8ZCC
>>>
>> __**_
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>> Archives: 
>> http://www.mail-archive.com/**flexradio%40flex-radio.biz/
>> Knowledge Base: http://kc.flexradio.com/  Homepage:
>> http://www.flexradio.com/
>>
>>
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Re: [Flexradio] Software for Flex 1500

[Graham Haddock]

Tim:

Not that we are aware of.

--- Graham / KE9H

==

On Sun, Aug 25, 2013 at 12:54 PM, amfone  wrote:

> Question: Will the Flex 1500 operate on any other SDR software like
> RadioJet or SDR-Radio?
>
> Thanks Tim
> WB8UHZ
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Re: [Flexradio] Flex-1500 and external frequency reference.

[Graham Haddock]

Carol:
That is a simple and appropriate solution. Congratulations!
--- Graham / KE9H

==

On Fri, Jul 19, 2013 at 8:35 PM, Carol F. Milazzo, KP4MD/W6 <
kp...@cfmilazzo.com> wrote:

> My GPS disciplined 10 MHz square wave frequency reference did not work with
> the Flex 1500 since the Flex 1500 reference input uses a bridge rectifier
> as a frequency doubler and requires a sine wave source.  Since a square
> wave consists of a sine wave at the fundamental frequency combined with all
> its odd harmonics, a low pass filter will convert a square wave to a sine
> wave.  I used RFSim99 to design a 3 pole Butterworth low pass filter.  The
> RFSim99 simulation model yielded a frequency response curve with 1.7 dB
> loss at 10 MHz and 30 dB attenuation at the 30 MHz third harmonic.  The
> filter was built into Altoids box: two 270 pF capacitors and a 1.4 µH
> inductor (17 turns of magnet wire on a T50-2 toroid core).  The filter's
> actual frequency response measured with a MiniVNA Pro corresponds with that
> predicted by the RFSim99 model, and the Flex 1500 now works with this GPS
> frequency reference.
> Details at
>
> https://plus.google.com/photos/114032640816757126398/albums/5902191645840048913
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Re: [Flexradio] E C H O ECHO echo

[Graham Haddock]

Are you using VAC for anything?
Turn off all VAC stuff and see if it goes away.

--- Graham / KE9H


On Sun, Jun 16, 2013 at 8:26 AM,  wrote:

> Patrick,
>
> Did you receive any system updates following the last successful operation
> of your Flex radio? I've experienced more "works one day but not the next"
> caused by operating system updates than anything.
>
> I experienced a sound card issue at one time caused by an update.  The OS
> updated, and that update causes an issue with the sound card when using
> certain programs. I had to manually update the sound card driver to
> compensate for the OS update.
>
> Maybe something you might want to check.
>
> 73
>
>
> On Jun 16, 2013, at 9:08 AM, "Patrick Greenlee" 
> wrote:
>
> > Wayne, I immediately suspected RFI as well but... How can I have RFI
> with the drive set to zero and a dummy load on the output?  That should
> seriously reduce the RF available to make I.  Either of these actions
> should eliminate any near field problems but with belt and suspenders,
> dummy load and zero drive how can I have RFI?
> >
> > Everything is bonded together with braid from every component going to a
> common connection and then to a 8 ft ground rod only 3 ft from the rig. (I
> drilled a hole in the slab floor and put in a ground rod.)
> >
> > One evening it works great and the next morning (and subsequently) it is
> reverb city.
> >
> > Argh...
> >
> > Patrick AF5CK
> >
> > -Original Message- From: k4...@fastmail.fm
> > Sent: Saturday, June 15, 2013 5:39 PM
> > To: flexradio@flex-radio.biz
> > Subject: Re: [Flexradio] E C H O ECHO echo
> >
> > Patrick, I had the same problem with my 5000 and it turned out to be
> > rfi.
> > Some station rewiring and reorienting the antenna further away from the
> > shack solved the problem.
> >
> > 73
> > Wayne
> > K4ELO
> >
> >
> > ___
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> > FlexRadio@flex-radio.biz
> > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
> > Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/
> > Knowledge Base: http://kc.flexradio.com/  Homepage:
> http://www.flexradio.com/
> >
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Re: [Flexradio] www.5kub.com is streaming live from the booth across the aisle from Flex

[Graham Haddock]

Would you believe W5KUB

http://www.w5kub.com/

--- Graham / KE9H

==




On Thu, May 16, 2013 at 8:52 PM, David Decoons  wrote:

> It is k5kub, not 5kub
>
> Dave
> wo2x
>  On May 16, 2013 9:42 PM, "Neal Campbell"  wrote:
>
> > Their booth is just beside us! Expect ablot of back trying to gt closer
> to
> > the astonishing Signature 6700!
> >
> > Neal Campbell
> > Abroham Neal LLC
> >
> > HUGE DAYTON CELEBRATION SALE!!
> > Time to get the guaranteed setup for your SDR!
> > Now until end-May
> >
> >
> >
> > On Thu, May 16, 2013 at 12:52 PM, Ted  wrote:
> >
> > > Much to my surprise the camera panned over across the aisle to the Flex
> > > Booth.
> > >
> > > Ted
> > > NX6C
> > > ___
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> > > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
> > > Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/
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> > > http://www.flexradio.com/
> > >
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> >
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Re: [Flexradio] [FlexEdge] Can you identify this noise?

[Graham Haddock]

Bill:

If you take a portable AM broadcast radio, and tune it off of any station,
can you hear the noise?

If so, can you use the portable AM radio, which usually have a directional
"loopstick" antenna to find the noise, by determining the direction with the
antenna null, and walking towards it as it get louder.

Or similarly, can you hear it on an automobile AM broadcast receiver that
is tuned off of any station?  Similarly, drive around and note where it
gets loudest.

--- Graham

==


On Mon, Feb 25, 2013 at 7:25 PM, William H. Fite  wrote:

> I'll be grateful to anyone who can tell me what this intermittent noise
> might be.  It occurs on all bands at intervals of about 1.5 seconds.  I
> have unplugged everything in the house, one by one, with no improvement.  I
> have made no changes to my station whatsoever.  All my power supplies--a
> big linear and a bunch of wall-warts--are quiet.
>
> This is probably of little interest to the group, as a whole, so you may
> want to reply to me personally.
>
> Thanks in advance for your help.
>
> Bill
> KJ4SLP
>
> --
> I can explain it for you, but I can't comprehend it for you.
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> used for posting topics related to SDR software innovation and other
> technical SDR topics.
>
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Re: [Flexradio] Question about NB1 and NB2, not working as I expect it to

[Graham Haddock]

Mark:

The "camel hump," as you call it, is the characteristic noise signature of
a switching power supply.  You will be much better off eliminating that at
its source
than you will be getting poor Bob to write a noise reduction routine to
reduce it
after it has already trashed the signal you want to listen to.

The usual suspects are:
 The wall wart running your WiFi base station.
 The wall wart running your cable modem.
 The rectangular in-line power supply running your laptop.
 The rectangular in-line power supply running your computer monitors.
 Any other wall warts or rectangular in-line power supplies running
stuff in your house.

There is an article in this month's QST describing how the little power
supply running the LED under-cabinet lighting in the kitchen was destroying
one ham's reception.

Good luck,
--- Graham / KE9H

==

On Tue, Feb 19, 2013 at 3:11 PM, Mark Lunday  wrote:

> I don't normally use these.because of what happens.
>
> I have local conditions that are quiet (-130 dBm,  But I do have a few RFI
> sources (still to be located) which generate a 20 kHz wide "hilltop" of
> noise up to -115 dBm.  The noise looks like a camel hump on the panadapter,
> and is usually on the CW portion of the 15 meter band down low, and the 12
> meter CW portion as well.
>
> When I turn on NB1 to curb that "camel hump" because I want to hear weak
> signals that are affected in that 20 kHz segment, the entire noise floor
> drops including that "hump", but so do the signals to the point of being
> unreadable.  And if there is a strong signal above -115 dBm anywhere in the
> band, the noise floor pulses to that signal.especially if it is CW.  Which
> renders the NB1 effect useless.
>
> I see a similar but less pronounced behavior when using NB2.the "hump"
> drops
> a bit but the noise floor and signals do not drop (good, but not as good in
> eliminating the noise with NB1).but the entire band pulses if any CW
> signals
> above -115 dBm are present (obviously not good).
>
> Pre-amp has no impact.  Resetting database has no impact.
>
> Using Flex 3000, SDR 2.5.3.  I have noticed this in earlier versions of
> SDR,
> which is why I did not use the features.  But it has me wondering about
> it.and I would like to use it.
>
> Mark Lunday, WD4ELG
> Greensboro, NC  FM06be
> wd4...@arrl.net
> http://wd4elg.blogspot.com
>
>
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Re: [Flexradio] Flex 1500 on 473Khz - Dial tuning backwards!

[Graham Haddock]

Geoff:

If you are going to operate the Flex-1500 below 490 kHz, you must supply
your own external receive bandpass filters.  The internal filters stop at
490 kHz.  You will also have to supply an external transmit power amplifier
that will accept the 0 dBm onput from the transverter port.  The 5 Watt
internal
RF power amplifier does not operate below 160 Meters.

--- Graham / KE9H

==


On Sun, Feb 17, 2013 at 6:18 AM, G0DDX  wrote:

> I don't know if this is just my Flex 1500 or if this is a general thing.
>
> When I tune below 500Khz it appears that the display tunes backwards.
>
> Also if I use the Crosshairs, target a signal peak (Below 500Khz), click
> the
> mouse, the display shows the frequency I clicked on, but the station has
> disappeared.
>
> If I tune say from 480 to 520 Khz, the display tunes the wrong way until I
> get to 500Khz and then it changes direction and tunes the way I would
> expect
> it to.
>
> Also as you approach the 500Khz spot, you can see some images coming
> together and merging.
>
> I have never noticed this before, but we are off on an Exped in a couple of
> months, and we are hoping to run a 473Khz station. This has put a damper on
> my  experiments.
>
> My question is simply, is this what everyone else's Flex 1500 does, or is
> it
> just mine?
>
> Geoff
> G0DDX
>
>
>
>
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Re: [Flexradio] Optical Isolation for Flex-1500

[Graham Haddock]

USB 2.0 Full Speed = USB1.1 Full Speed = 12 Mbps = what the Flex-1500 runs.

At least the USB committee has not called the same data rate two different
things in their standards. Even for USB three, Full Speed is still 12 Mbps.

Which bends the English language a little, since USB 2.0 also adds High
Speed
at 480 Mbps, and USB 3.0 added Super Speed at 3.2 Gbps = 400 MBps.

You might think that "Full Speed" would mean the maximum speed that
the version of the standard would run, but in "USB Speak", it does not,
it always means 12 Mbps.

Good luck & 73's
--- Graham / KE9H

==

On Sun, Feb 3, 2013 at 1:36 PM,  wrote:

> Neal,
>
>   I do not think that device will work on a Flex 1500. I checked it out
> on the vendor's web site and that device is a one-speed device (USB 2.0
> full speed {12MB} only), and the Flex 1500 is USB 1.1 device (data speed
> equiv. to USB 2.0 low-speed device).
>
>   Les, check out L-COM and Black Box - both of them make/sell USB
> isolators, and look for one that handles USB 1.1 speed (either a
> specific USB 1.1 device or a USB 2.0 device that is
> backwards-compatible). Also, you do NOT need to worry if that device
> will also supply power to the downstream unit (the radio) since the 1500
> has its own power supply. All you need is a unit that will isolate the
> data path.
>
>   Sad to say that even after over 15 years of development USB is still
> "not really ready for prime time" - way too many incompatibilities
> between supposedly compatible devices. If I had a dime for every USB
> problem I've had to resolve over the years (both professionally and with
> my own equipment) I could buy a 6700 and have money left over. Flex was
> VERY smart to go Ethernet as the connection medium for the 6000 series
> radios.
>
> 73,
> Bill Bowen
> K8WHB
>
> >  Original Message 
> > Subject: Re: [Flexradio] Optical Isolation for Flex-1500
> > From: Neal Campbell 
> > Date: Sat, February 02, 2013 3:56 pm
> > To: l...@highnoonfilm.com
> > Cc: "flexradio@flex-radio.biz" 
> >
> >
> > There are similar devices to isolate a USB device,
> > http://www.keterex.com/kxusb150.php?gclid=CIPN4aLBmLUCFQeynQodSVIANw
> >
> > Not sure if they work for the 1500 but its out there!
> >
> > 73
> >
> > Neal Campbell
> > Owner
> > Abroham Neal LLC
> > Work:+1 540 645 5394
> > Mobile:  +1 540 645 8171
> >
> >
> >
> > On Sat, Feb 2, 2013 at 12:18 AM, Les Rayburn 
> wrote:
> >
> > > It appears that my Flex-1500 may have suffered an ESD related failure.
> > > This used to happen frequently to the C-IV jack of my Icom 746 Pro and
> > > IC-910H transceivers, until I purchased an optically isolated CI-V
> > > interface to remove any potential ground loop between the computer and
> the
> > > radios.
> > >
> > > Is a similar interface available for the Flex-1500?
> > >
> > >
> > > --
> > > 73,
> > >
> > > *Les Rayburn, N1LF*
> > > EM63nf
> > > 121 Mayfair Park Maylene, AL 35114
> > > 6M VUCC #1712
> > > Grid Pirates #222
> > > Life Member Central States VHF
> > >
> > > WPC4LF Popular Communications Monitor ID
>
>
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Re: [Flexradio] Fwd: SWR versus Frequency plot program

[Graham Haddock]

Robert:

Microsoft Office - Excel will plot anything and everything.

--- Graham

==

On Sat, Jan 26, 2013 at 1:32 PM, Robert Costa, KB6QXM wrote:

>
> Slightly off-topic to Flex radio, but someone wrote this for Elecraft
> radios, so is there one that can be manual input or run with the Flex
> radios that have the SWR bridges installed? Please see question below.
>
>
> 73,
> Robert
> KB6QXM
> "Ham Radio Open Conversation"
> Yahoo group owner/moderator
>
>
> - Forwarded message -
> From: "Robert Costa, KB6QXM" 
> To: 
> Subject: SWR versus Frequency plot program
> Date: Sat, Jan 26, 2013 11:20 am
>
>
>
> All,
>
> Does anyone know of an application that you can define the frequency
> spread on one axis and the SWR on the other axis and then you plug in the
> SWR values in your pre-defined frequency steps and the program will draw
> you a printable SWR curve?
>
>
> 73,
> Robert
> KB6QXM
> "Ham Radio Open Conversation"
> Yahoo group owner/moderator
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Re: [Flexradio] 1500 power output

[Graham Haddock]

Dale:
Is he new to PowerSDR?
Does he understand how the transmit power control works?
Does he understand he has to reset it for transmit versus tune?
--- Graham

==

On Sat, Dec 29, 2012 at 9:13 AM, y...@aol.com  wrote:

> I recently sold my 1500 to another Ham, after a weeks use ,he
> called and said the 1500 was only putting out apx. 1/4 of a watt or less. I
> suggested he maybe reload power sdr, running the latest version, no change.
> This is into a dummy load ,so no swr holdback etc. Any one have any
> thoughts about the problem, my suggestion was send the 1500 back to flex.
> thanks
> dale wt4t
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Re: [Flexradio] Flex 5000A sidebands reversed?

[Graham Haddock]

Gordon:

I would start by resetting the database to the factory defaults, if you
have not done so.

--- Graham / KE9H

==

On Tue, Dec 11, 2012 at 4:30 PM, Gordon P. Howell, Jr. wrote:

> Has anyone had the situation where upper sideband button is apparently
> lower and lower is upper?  I loaded 2.5.3 today with no errors and when I
> brought up the radio, it became apparent that the sideband buttons (and
> that's all of them, CW,Digital, any that use sideband as opposed to AM or
> DSB) were reversed.  I ran 2.4 and the radio exhibited the same behavior.
>
> This 5000 is a newer one that I bought from another list member to use in
> a club contest station and it has not been on air since Field Day.  I sold
> my original one and am using this one until the 6700 is released.  The
> other one did not have this issue with 2.4.
>
> Sort of bizarre.  Anybody got any ideas about how to fix this problem?
>
> Thanks
>
> Geep
> WA4RTS
>
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Re: [Flexradio] Sweeping noise/signal across band

[Graham Haddock]

Konrad:

Most likely a wall wart that uses a switching supply inside it.
Unplug all the wall warts in your shack, one at a time.
Mine was the one running my WiFi base/router.

--- Graham

==

On Sat, Dec 1, 2012 at 4:15 PM, Steve Fowler  wrote:

> Welcome to urban noise pollution!  At least that's my best guess.  I have
> switch mode power supplies in my house along with the PWM motor controller
> on my furnace that make noise like that.  The one I had that acted exactly
> like yours was a SMPS powering my security cameras.  The frequency changes
> with minor variations in the load, which causes the drifting you see, and
> the long wires feeding my cameras make great transmitting antennas.  You
> can track down and reduce or eliminate the noise coming from your own
> house, but then you'll start picking it up from the neighborhood and
> beyond.
>
>
> On Sat, Dec 1, 2012 at 3:50 PM, konrad schultz 
> wrote:
>
> >
> >
> >
> >
> > Anyone having a similar problem.  I see (on the panafall) and hear in the
> > headphones a sweeping signal or noise that regularly and slowly goes
> across
> > the band in time.  Right to left and then back.  Adds 20 db of noise to a
> > -119 db threshold on 20M CW.   I am using my FLEX 3000 portable here at
> our
> > condo in SW FL.  Ant is a portable dipole mounted on a camera tripod
> using
> > two MFG 20M whips and stands 3-6 feet off the ground.   50 Ohm coax.  New
> > Lenovo laptop.  All seemed to work fine at our QTH up north on 80M
> dipole -
> > which is up in two trees. Thoughts?  Best, Konrad W1KON
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Re: [Flexradio] 5000A and PSDR 2.4.4 - 2M transverter above 146 mhz?

[Graham Haddock]

If you are running the 1500 in the "0 dBm" transverter mode, then the band
pass filter edges in
the vicinity of 10 Meters, switch at 25.3 MHz, and at 37.6 MHz.

If you are trying to use the 5 Watt PA, then it will stop transmitting at
the
top of the 10 Meter band (29.7 MHz).

--- Graham

==

On Thu, Nov 29, 2012 at 2:06 PM, Jim Barber  wrote:

>
> It went right up to 31.99 without any trouble. I didn't bother to
> stretch a cable over to the spectrum analyzer, but output the didn't look
> suspicious and I was tired.
>
> Now-  what's the equivalent info for the 1500?
>
> Thanks,
> Jim N7CXI
>
>
> On 11/29/2012 5:40 AM, Tim Ellison wrote:
>
>> The upper end TX filter switch point on the FLEX-5000 with PowerSDR
>> v2.4.4 is 32 MHz.
>>
>> Tim Ellison
>> On 11/29/2012 6:15 AM, Jim Barber wrote:
>>
>>> So to make a long story short, I found three things to be true:
>>>
>>> (1) My brand-new DSO needs a trip to the cal lab. (big surprise)
>>> (2) My 5000A's transverter *output* appears to be flat to within 1 dB
>>> (measured 0.9 dB) from 28-32 mHz
>>> (3) It's too late and tired out to play with the receiver tonight.
>>>
>>> So -
>>> Assuming the transverter input holds up as well as the output does,
>>> then the 5000A itself will work fine.
>>> I also found that with the exception of the old Yaesu "FTV-XXX"
>>> (bandswitched) designs and perhaps a few others, transverters are
>>> basically designed to cover the CW/SSB/DX parts of the band(s) only.
>>> That makes sense, since the more narrow you make the receiver, the
>>> better it can be made to perform.
>>>
>>> Perhaps two switched helical filters instead of one fixed one?
>>>
>>> Interesting exercise, anyway.
>>>
>>> 73,
>>> Jim N7CXI
>>>
>>>
>>> On 11/28/2012 11:06 PM, Jim Barber wrote:
>>>
 Hi Bill, thanks for the reply.

 I don't have anything that will measure power accurately those
 levels, but my 100mHz DSO should have relatively constant gain across
 that narrow a spread, and I can certainly measure RF voltage into a
 50-ohm load. If I get time in the next couple of days I'll build a
 50-ohm scope tap/load with a BNC on it and see what happens. The
 5000A transverter RX is easier. I have a WaveTek generator with a
 fairly recent cal - I can sweep 28-32mHz at 50uV (or perhaps less to
 make sure the AGC stays out of it) and again see what happens.

 I'm not looking for trouble here - it just seems like a reasonable
 application for the 5000A, or perhaps the 1500. I haven't actually
 *used* 2M or 70cM FM in a couple of years now, but since I'm looking
 into it, why not go for it all?

 73,
 Jim N7CXI


 On 11/28/2012 10:15 PM, Bill Bordy, NJ1H wrote:

> Jim,
>
> I am using an old Downeast Microwave 2 meter transceiver with my
> Flex-5000A using the Flex XCVR 10 meter IF connections. I have a pretty
> severe roll off on TX output from the transceiver in the satellite
> portion of 2 meters. At this point, I don't know if it is the
> transceiver or the 10M IF output. I am able to use the satellite 2M
> transmit frequencies, 145.8 to 146 MHz, but the output from the
> transceiver is nowhere near the 25W I can get at 144.200 MHz.
>
> The transceiver appears to be optimized for 144.2 MHz.
>
> I operate full duplex on the satellites and my audio quality sounds
> fine.
>
> I have transmitted above 146 MHz on the inputs of some FM repeaters.
> The
> roll off of the TX output is of course worst the higher in frequency I
> go. This is a low priority item for me, as I have 2M FM gear and rarely
> use it.
>
> I am using PowerSDR v2.4.4.
>
> I need to characterize the 10M IF output power from 28 to 32 MHz to see
> how flat it is. If someone has done this or has the right equipment to
> measure easily, that would be great.
>
> 73,
> Bill
> NJ1H
>
> On 11/28/2012 10:57 PM, Jim Barber wrote:
>
>>
>> I read in the release notes for PSDR 2.4.4 that:
>>
>> "12. Improved FLEX-5000 Transverter Operation. Band edge checking for
>> the transverter IF has been relaxed, allowing out of ham band IF
>> transmit on the transverter TX port. Also the 10m IF TX filter switch
>> point has been moved to 32 MHz to allow for a wider IF transmit
>> capabilities."
>>
>> Relaxed to what, and what is the practical upper limit? I saw where
>> someone else asked this, but didn't find where it had been answered.
>>
>> My reason for asking is that I'd like to be able to use my 5000A with
>> a transverter to cover the entire 2M band all-mode. Is that feasible?
>> The radio transverter port(s) would need to work to 32 mHz with
>> *reasonable* gain flatness, and I'd have to find a transverter that
>> would cover the whole 4 mHz as well. Has anyone accomplished this and
>> have it working? If so, what transverter 

Re: [Flexradio] Terminology

[Graham Haddock]

"Quadrature Signals: Complex but not complicated" by Richard Lyons.

http://www.dspguru.com/sites/dspguru/files/QuadSignals.pdf

--- Graham / KE9H

==

On Mon, Nov 5, 2012 at 9:47 AM, John Molenda wrote:

> I still do not understand I/Qcan some one please tell me what this means
> or at least stands for .  thanks John kb2huk
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Re: [Flexradio] Blown finals

[Graham Haddock]

Nigel:

The ATU is a 2 layer board.
Just the top and bottom outer layers.
No inner layers.

--- Graham

==

On Fri, Oct 19, 2012 at 2:36 PM, Nige G7CNF  wrote:

> My English teacher (a Greek chap named Mr Avrimedes) used to say, "Never
> assume anything because you make an ASS out of yoU and ME."
>
> I made an assumption - and paid for it. The finals arrived from Icom today
> and I set-to. Because I'm disabled I cannot hold a standing posture to work
> on equipment so I did it on the kitchen table. Out came the ATU, out came
> the RD70's which looked suspiciously healthy (although I'd like to know
> what mig welder was used to "solder" them in, high temp solder, oh boy). In
> went the new ones and then the reassembly. Only then did I see what I can
> only describe was the cause of yet another bad day.  .  .  .
>
> One of the relays on the ATU board was fried, along with the adjacent PCB.
> Relay K7 is toast.
>
> How many layers does the ATU have? The damage is nearly through to the
> rear of the PCB so I'm not holding my breath that I can fix this - or
> anyone else for that matter. I have taken a photo but not attached it to
> this post as I don't know if it would be sent to everyone and not everyone
> wants their bandwidth used up on graphics.
>
> Cheers, from one rather despondent Nigel.
>
>
>
>
> On 18/10/2012 18:27, Bill Ockert - ND0B wrote:
>
>> Maybe I am just unlucky but I have blown mine twice. First time I blamed
>> myself as I had an extended JT65 session
>> over several bands at full power.  JT65 is about 40% duty cycle with 48
>> seconds out of each two minute period as
>> key down time.  The SWR was very low on all bands (autotuned with and
>> AT-Auto) so while I do not
>> believe this type of operation should have ben an issue but I did take
>> the precaution of having DDUtil cut the power
>> back to 50% any time I go into a digital mode.
>>
>> The second time, about six months later they failed sometime between the
>> end of a 160m rag chew session at 22W AM
>> driving my ACOM amp and an attempted 6m USB session, there was a two day
>> span where  the radio was
>> powered but not in use.  I believe it failed while sitting there so I
>> have not come up with a good explanation for
>> the second failure.
>>
>> Both times I shipped it back to Flex and between shipping and repair
>>  this "feature" has cost me close to
>> $600.  I plan to stock the finals from here on out to avoid most of the
>> cost and the downtime should this happen
>> again.
>>
>> 73 de Bill ND0B
>>
>> -Original Message- From: Rich
>> Sent: Wednesday, October 17, 2012 12:06 PM
>> To: flexradio@flex-radio.biz
>> Subject: Re: [Flexradio] Blown finals
>>
>> that's so strange ,that you should have blown finales,, have done a lot
>> with Flex's
>> and have never heard of a blown finale .
>> but whatever the case ,, hope all goes well
>> "Rich"
>>
>>
>>
>>
>> On 10/17/2012 10:18 AM, Nige G7CNF wrote:
>>
>>> To any UK Flexer who might find themself in the same position, courtesy
>>> of N1DL the F5K's finals are also used in the Icom IC-7000. The RD70HHF1's
>>> were in stock @ £44ea. That's about middle of the road from the prices I
>>> obtained but the only supplier to have them in stock.
>>>
>>> Nige.
>>>
>>> On 17/10/2012 14:42, Karl Geng wrote:
>>>
 Just remembered the ICOM IC7000 uses the same MOSFETS in the final
 try the UK ICOM guy.

 Karl N1DL


 On Oct 17, 2012, at 8:46 AM, Nige G7CNF  wrote:

  Cheers. Managed to confirm that. Now the trouble is I can't find any
> in the UK - any help appreciated.
>
> Nige.
>
> On 17/10/2012 12:57, dan edwards wrote:
>
>> pair of rd70hhf's in push-pull, i THINK73, w5xz
>>
>>
>> --- On *Wed, 10/17/12, Nige G7CNF //* wrote:
>>
>>
>> From: Nige G7CNF 
>> Subject: [Flexradio] Blown finals
>> To: flexradio@flex-radio.biz
>> Date: Wednesday, October 17, 2012, 11:54 AM
>>
>> Hi guys.
>>
>> Following an unexpected high SWR condition on 10m (@80w full
>> carrier), the PA failed to fold back for some reason and smoked
>> them. To save me the bother of opening the box prematurely, could
>> someone tell me which MOSFETs are used, please?
>>
>> Regards,
>>
>> Nige.
>>
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Re: [Flexradio] Flex 1500 and RTTY

[Graham Haddock]

Thom:

The rated duty cycle of the radio is ICAS, which is 5 minutes transmit,
followed by 50 percent transmit duty cycle (one minute transmit, one minute
receive) indefinitely.

I assume that RTTY guys do receive, at least some of the time.  :-)

During product certification, we ran the radio full power transmit for 4 hours,
and the case did not go above 130 degrees F.  All the parts are rated to
80 degrees C, which is 176 degrees F.

Just remember that the case is the heat sink for the radio, including
the RFPA, so do not cover it with towels, jackets, or old copies
of The Contest Journal.

As long as the case is sitting in the open, you should not have a problem.

--- Graham / KE9H

==

On Mon, May 14, 2012 at 10:49 PM, Thom  wrote:
> I am strongly thinking about buying a Flex 1500 QRP radio to do some serious
> RTTY Contesting.  I am wondering if this radio can handle the rigorous 100%
> duty cycle without becoming a pile of molten aluminum. I also understand
> that Writelog had been successfully used with this radio but i have yet to
> find any setup info for this specific radio.
>
> Yes I know it is only 5 watts but I live in a large apartment building and I
> need to keep the neighbors happy and uninformed.
>
>
>
> any thoughts?
>
> 73
>
> Thom WI8W
>
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Re: [Flexradio] External 10MHz reference Flex-1500?

[Graham Haddock]

10 MHz sine wave, 0 dBm to +10 dBm.
--- Graham / KE9H

==

On Sun, Apr 29, 2012 at 1:13 PM, Mathias Krüger
 wrote:
> Hello,
>
> what is the necessary signalform for the 10MHz external reference clock?
>
> Squarepulse or sinus?
>
> Best wishes
> MAthias
> HB9DOU
>
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Re: [Flexradio] Flex-1500/PowerSDR and AGC-T for PSK31 ?

[Graham Haddock]

Mathias:

I would suggest first, turning the AGC-T down to around 65 or 70,
so that the background noise when no signals are present is low in
volume.  If it still does it, turn it down further.

If you do want to turn off the AGC-T and control it manually,
go to the AGC button on the front panel and select "Fixed."
The AGC-T control then becomes a direct control of the receiver
gain, and nothing is automatic.

--- Graham / KE9H

==

2012/4/15 Mathias Krüger :
> Hello,
>
> i am using a FLEX-1500 mainly for PSK31. Often when a strong station
> is in the PSK31 segment other signals are disapearing because of the
> automatic gain control i think. With "normal" TRX, it is possible to
> switch of the AGC and control the gain manualy. How can i do this in
> PowerSDR?
>
> Thanks for your answers in advance.
> 73 de HB9DOU
> Mathias
>
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Re: [Flexradio] 1500 questions

[Graham Haddock]

Jim:

On Wed, Apr 11, 2012 at 7:59 PM, Jim Barber  wrote:


> (1) Can the 1500 operate AM TX at 1.25W carrier, (50-ohm resistive load)
> 90-100% modulation for extended roundtables without stress? In my case I
> rarely TX as long as some "old buzzards", but like to operate with lots of
> headroom.

Yes.  Just make sure the case of the radio is not covered, or airflow around
it is not blocked.  The case is the heatsink for the PA.

> (2) Are the PSDR TX bandpass parameter limits the same as those for the
> 5000A? I ask because I seem to remember them being different for some
> reason.

The transmit filters for the 1500 are limited to 3650 Hz maximum.  The 5000A
can go much higher on transmit bandwidth.


> (3) Is the overall audio fidelity of the line-level audio output at the
> FlexWire connector adequate for a picky listener with amateur and broadcast
> AM? I've only been able to listen to a 1500 under less-than-optimal
> conditions.

Yes.  Just don't be tempted to use an old RS-232 cable to connect to the
Flexwire connector.  Build your own cable.  An RS-232 cable will fit, but
has jumpers between the pins inside the cable that will create big problems.


> And the harder one... Assuming a 2-stage final, has anyone considered an
> additional bandpass in the chain and what were your overall IMD3 results at
> the antenna port? I'm currently thinking of a bandpass between the 1500 and
> a 10dB (50W) MOSFET driver, then another between the driver and a YC156
> final. The YC156 would operate GG at a very stiff 4KV with adequate ZSAC for
> decent IMD3 from the final itself with either a pi or pi-L tank as required.
> My primary concern is with the rest of the chain.

Any realizable bandpass filter in the amplifier chain is generally not going
to have any effect on the odd order IM of the transmitter chain.  The cause
of the odd order IM is non-linearity in the amplifier devices themselves,
typically due to driving one or more of the amplifiers into
compression or clipping.
You can't build a filter narrow enough to remove the IM products once you have
created them.  You need to manage the linearity all along the transmitter
chain so you don't create the odd order IM products to start with.

--- Graham / KE9H

==

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Re: [Flexradio] Stereo Diversity

[Graham Haddock]

Rob:

I would think that one antenna vertically polarized and one antenna
horizontally polarized, in (approximately) the same location, would be
decorrelated enough for this to work without wide distance antenna separation.

If they are the same polarization, then they should be at least 10 wavelengths
apart to bemostly decorrelated.

--- Graham, KE9H
FlexRadio Systems

==

On Thu, Mar 1, 2012 at 10:11 AM, Rob Keijzer  wrote:
> Hi everybody,
>
> Would it be possible to have RX1 and RX2 of the Flex5kA synchronised and
> both receivers have antennas far
> apart, and thus create a stereophonic image in your headphones?
>
> I mean one receiver to the left ear, second receiver to the right ear.
>
> Imagine how this spacial "acoustic" image of the aether would sound!
>
> Selective fading etc. would be non-coherent in both channels, making a
> station move about in the stereo image.
>
> The psychedelic would of course be fun, but I'm thinking about the fact
> that this adds a dimension in filtering unwanted signals
> and isolate a wanted signal, because, like an instrument in a music
> recording, the wanted signal would stand out as a descreet
> point in space.
>
> Has this been done before? I'd lijke to experiment with this, but I'm
> afraid the antennas must be miles apart for this to work.
>
> 73,
> Rob
> PA3CNT
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Re: [Flexradio] Test

[Graham Haddock]

Alan:
If you want to get a lot of messages, just mention how much you like "Facebook."
--- Graham


On Sun, Feb 26, 2012 at 4:47 PM, Alan NV8A  wrote:
> Please pardon the "noise." I've "reset" my email address and options to the
> same as they were before -- now to see if I get messages.
>
> Alan NV8A
>
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Re: [Flexradio] Flex-1500 Speaker Audio

[Graham Haddock]

Don:

The LINE OUT pin on the FlexWire connector is 1 Volt line level, 1000 Ohms,
so only about a milliWatt.  Definitely won't drive a speaker.  Intended to
drive
the LINE IN on a stereo or other kind of audio amplifier.

--- Graham / KE9H

==

On Fri, Jan 13, 2012 at 6:14 PM, Don May  wrote:

> Flexers,
>
> Another Flex-1500 question...
>
> The Flex-1500 rear apron FlexWire DB-9 connector has an audio LINE OUT
> (pin 9).
>
> Is this connection ONLY a low level mono output or is a full 1 watt mono
> audio available here?
>
> I already drive a external speaker with audio via the front panel phones
> jack and the FlexWire connector could be an alternate connection.
>
> Don / N5DM
>  - Original Message -
>  From: Mike Heitmann
>  To: Don May
>  Sent: Friday, January 13, 2012 11:24 AM
>  Subject: Re: [Flexradio] Flex-1500 New User
>
>
>  My Pleasure, Don.
>
>  I suspect that if the laptop "goes to sleep" or into a "power saver"
> mode, items #1 and #3 could occur as well, requiring anything from a "power
> cycle of the radio" to a "power cycle of the radio" and a "computer reboot"
> to recover. And I think #5 could be fixed in software by PowerSDR
> generating a sidetone early in the keying processing separate from the
> generation of the RF waveform.
>
>  The delays are present in SSB and digital modes too. If you turn on the
> PSDR monitor and listen to your transmitted SSB signal you will hear a
> noticeable delay. You can tweak some of that out by changing the audio and
> DSP buffer sizes (which helps with the CW delay too), but only to a certain
> point. And the slower your CPU is, the bigger the buffers need to be to
> compensate for slower processor speed.
>
>  PowerSDR is still in need of some tweaking in those areas from my point
> of view. All the same, I am very happy with the radio and sftware. I use it
> to operate portable all the time and it's a great performer.
>
>  I've also got a Flex-3000 that I use (mostly) at home. I can't drive it
> with the netbook because it requires a FireWire port that the netbook
> lacks. I was using a Dell XPS-1530 (duo-core2.4 GHz with built-in FireWire)
> but over the holiday break from work I built a new desktop machine with i7
> CPU and a low latency ASRock motherboard. It works great with the Flex
> radios!
>
>  Enjoy!
>
>  Mike, N0SO
>
>
>
>
>
> --
>  From: Don May 
>  To: flexradio@flex-radio.biz; Mike Heitmann 
>  Sent: Fri, January 13, 2012 10:29:02 AM
>  Subject: Re: [Flexradio] Flex-1500 New User
>
>
>  Thanks Mike.
>
>  Excellent input.
>
>  1) I suspect I may have improperly shut down PSDR on occasion...which led
> to the MEMORY files loss.
>
>  2) My next purchase will probably be a new Intel i5/i7 driven
> laptop...that should help a lot.
>
>  3) Understand.
>
>  4) TX PWR meter should be an easy fix.
>
>  5) I'm still disappointed with the Flex-1500 CW ops so far...that's is my
> main mode of communication.
>
>  6) Understand now about bandwidth limitations of the radio hardware and
> USB connection.
>
>  7) The Flex-1500s 1 watt (mono) audio output is just on the limits of
> reasonable drive power to my outboard speaker in a medium size room (Sounds
> Sweet 7" speaker).
>
>  Don / N5DM
>
>
>
> --
>
>- Original Message -
>From: Mike Heitmann
>To: Don May
>Sent: Friday, January 13, 2012 9:44 AM
>Subject: Re: [Flexradio] Flex-1500 New User
>
>
>Hi Don,
>
>Welcome to the Flex Radio community, and congratulations on getting a
> Flex-1500.
>It's a great radio! I'll run down your list:
>
>1. PowerSDR  keeps it's database files open until the radio shuts down
> and
>PowerSDR closes normally. If it crashes or the shutdown sequence is
> abnormal in
>any way, there is a good chance the database files (including the
> memory list)
>get corrupted. The proper shutdown sequence should always be: A) Stop
> PowerSDR.
>B)Exit PowerSDR C)Power-off the radio. The list of memory channels is
> kept in a
>separate file, search  for a file named MEMORY.XML. You can copy it off
> to a
>backup folder and restore it of it becomes corrupted that way.
>
>2. Your laptop is right at the "threshold of pain" for PowerSDR
> processing
>power. and that is what causes the high CPU usage and occasional PSDR
> stall. I
>have one similar in performance, and it works as long as I don't run
> anything
>extra while running PowerSDR. I run the msconfig utility and turn off
> everything
>It doesn't need before starting PSDR. Check the knowledge base at
>http://kc.flexradio.com/ and search the database for "reducing DPC
> Latency". It
>will show you lots of tips and tricks to improve performance. FYI: I
> run PSDR on
>a dell netbook with 4GB RAM and a 1.8Ghz duo core ATOM processor. I can
> run PSDR
>and FLDIGI without any problems by

Re: [Flexradio] FlexRadio Digest, Vol 80, Issue 17

[Graham Haddock]

Brett:

My apologies if this has already been asked and answered, but where do you
have your IF offset?
It should be 9000 Hz for AM operation.

Setup/General/Hardware Config/
[Check Expert]
IF(Hz) should be 9000


On Sun, Dec 18, 2011 at 1:56 PM, Brett Gazdzinski <
brett.gazdzin...@verizon.net> wrote:

> The selectable sideband detection with sync detector is out there, the
> sdr-iq has it, as well as a better
> overall sync detector I think.
> Its handy to click the sync button and switch between sidebands or both.
>
> I think the dsb also works like you think, without the carrier.
> its been a while since I had one, but listening to am in the dsb mode had
> it sound like AM
>
> Brett
>
>
>
> - Original Message - From: 
> To: 
> Sent: Sunday, December 18, 2011 1:09 PM
>
> Subject: Re: [Flexradio] FlexRadio Digest, Vol 80, Issue 17
>
>
>  On 12/18/2011 12:33 PM, Bob McGwier wrote:
>>
>>> Absolutely NOTHING.  That is the REASON for having the (synchronous AM)
>>> SAM
>>> detector.  Maybe we should not have included the AM detector at all
>>>
>> [...]
>>
>>
>> I am glad it is included. Some AM QSOs, especially those involving
>> antique gear, have participants separated by many hundreds of Hz, and it's
>> nice in such cases not to hear the 'swoop' of the regenerated carrier
>> locking in when the stations are breaking back and forth quickly. When
>> everyone's very close to zero beat, of course, SAM is much to be preferred.
>>
>> Let me thank you right now for all the great work you have done with the
>> Flex hardware and software. As I said in another venue recently "...doing
>> all the filtering and demodulation with perfect mathematical accuracy in
>> software not only gives you tremendous dynamic range and filtering
>> capability, but it makes the recovered audio almost supernaturally
>> clean-sounding. Listening to a Flex into a good sound system for the first
>> time is like discovering that pillows had been strapped to your speakers,
>> and gravel had been stuck to your voice coil, for all these years -- and
>> finally removing them."
>>
>> I wonder if Flex, or anyone with the ability to do the coding, ever
>> considered these four enhancements that definitely interest me:
>>
>> 1. Costas loop detection for receiving pure DSB with suppressed carrier.
>> No transmitted carrier is required for a Costas loop sync detector. It
>> depends on the audio null in the Q channel for phase lock. It makes DSBSC
>> practical and supposedly does better than a carrier lock sync detector when
>> propagation is turbulent, even on AM.
>>
>> 2. Provision for transmission and phase-locked reception of SSB with a
>> pilot carrier down 20 dB or so. This was used by TMC for HF SSB broadcast
>> relay gear and gave SSB a clarity, with perfectly aligned harmonics, that
>> current ESSB techniques cannot (though they can come close with rubidium or
>> GPS frequency standards).
>>
>> 3. Use of "selectable sideband sync detection" using the phasing
>> technique to cancel the interference in either the upper or lower sideband
>> of an AM signal. (Since there is no significant desired audio in the Q
>> channel, the desired audio is _not_ cancelled from either sideband.) This
>> gives a 6 dB s/n advantage over the "drag the filter edge" technique of
>> chopping off one sideband when it is interfered with. This would also lend
>> itself to a fantastically effective kind of binaural reception on AM: LSB
>> interference in the left headphone channel; USB interference in the right
>> channel; desired AM audio -- and _nothing but_ desired AM audio -- in the
>> center. I have experienced this and it allows the brain to process the
>> signal in a way that allows _much_ better intelligibility.
>>
>> 4. Adding the ability to see the modulated RF (really IF) on the receiver
>> scope, instead of just the demodulated audio. This tells you a lot about
>> the received signal, especially on AM, and would be a very valuable tool.
>>
>>
>> With best Yule wishes,
>>
>>
>> Kevin, WB4AIO.
>>
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>> http://www.flexradio.com/
>>
>
>
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Re: [Flexradio] Keying Ameritron Amps ?

[Graham Haddock]

Rick:

The 1500 will key a positive voltage to ground, up to +30 Volts open
circuit,
up to 0.25 Amps closed circuit.  If it is a relay external, or inside the
amplifier
that you are driving, the relay must
have a diode across it, for suppression of the inductive "kick" on release.

If it is grounding a negative voltage that is required to key the
amplifier, then
you will need a relay in between the 1500 and the amplifier.  The same
requirement for a diode across the relay coil still stands.

--- Graham / KE9H

==

On Sat, Nov 5, 2011 at 6:58 AM, Rick Tharrington  wrote:

> Keying Ameritron Amps
>
> Anyone keying a Ameritron AL-84 amp without a buffer? Just using the
> Maximum
> current 0.25 Amps for the Flex ? The amps require around 100ma. The Flex
> 1500 .25 amps keying circuit(250ma) should handle the Ameritron  100ma 12
> volt open to ground circuit?
> I'M keying it right now with a Heil FS-2 foot switch getting around 90 to
> 100 watts pep!
> Rick Kd4jrx
>
>
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Re: [Flexradio] Preamp

[Graham Haddock]

Phil:

There are some upper bands where the PreAmp MUST be turned on
to meet FCC specs, to stop/isolate LO leakage coming backwards out of the
QSD.
In this case, the PreAmp is turned on and the control dimmed to indicate
that you do not have control of the function.

This only occurs on the highest frequency bands where you need to
have the preamp turned on to get down to the noise floor, anyway.

--- Graham / KE9H

==

On Sun, Oct 2, 2011 at 6:54 PM, Phil Theis  wrote:

> I was asked today and didn't have an answer regarding the preamp button.
> What controls the state of the on and off in the window?  There is a
> situation where the on is displayed but the display is faded.  Change band
> and the on is displayed but it is in increased intensity.
> What governs the intensity of the of or off in the window display?
> thanks
> Phil K3TUF
>
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Re: [Flexradio] [Flexradio PSDR 2.1.5 Install problem now understood

[Graham Haddock]

Bill:

Do you have a single account with administrative privileges?

Or have you set up your computer with two accounts, one user account
without administrative privileges, and one administrator account with
administrative privileges?

--- Graham

==

On Sun, Jul 24, 2011 at 8:24 AM, Bill  wrote:

> I kept getting an error message saying the  PowerSDR_2.1.5_Suite_Setup.exe
> file could not be found.
> Even though I went to that subfolder and it was there.
> Finally, I right clicked and after selecting "Run as administrator", the
> Install started and completed properly.
>
> Now I'm the only user and administrator so not sure why this happens with
> every beta and release version.
> It's probably a setting that I incorrectly made.
> Anybody no how I can fix that?
>
>
> On 7/22/11 5:48 PM, Greg Jurrens wrote:
>
>> Dear FlexRadio customers:
>>
>>
>> FlexRadio is pleased to announce the new Official Release of PowerSDR(TM)
>> v2.1.5 is now available for immediate download from our website.
>>
>> PowerSDR 2.1 adds significant feature and performance enhancements over
>> the
>> prior official release to all models including the FLEX-5000A, FLEX-5000C,
>> FLEX-VU5K upgrades, FLEX-3000, FLEX-1500, and SDR-1000.  We recommend that
>> all customers upgrade to v2.1.5.
>>
>> The files can be downloaded at:
>>
>> PowerSDR v2.1.5 Integrated Installer / Setup Suite:
>> http://support.flex-radio.com/**Downloads.aspx?id=371
>>
>> PowerSDR 2.1.5 Release Notes:
>> http://support.flex-radio.com/**Downloads.aspx?id=372
>>
>>
>> While the improvements are too numerous to detail, the following is a list
>> of major changes since the previous official release, PowerSDR v2.0.22:
>>
>>
>>
>> 1. There is now an optional installation of the new FlexControl™ driver.
>> Important: Please read the FlexControl Installation Errata Sheet regarding
>> FlexControl use with Virtual Serial Port software.
>>
>> 2. FM has been completely redesigned including CTCSS tones, improved
>> modulation/demodulation, soft limiting, FM squelch and more.
>>
>> 3. FM now has a dedicated Repeater Mode that allows you to set positive
>> and
>> negative offsets along with the frequency offset.  Split mode is no longer
>> needed to operate FM repeaters.  For more information, refer to the KB
>> article How to Use FM Repeater Mode (
>> http://kc.flexradio.com/**KnowledgebaseArticle50501.aspx
>> **)
>>
>> 4. We've added a new and improved MEMORY form that integrates with the new
>> FM Repeater Mode. For more information, refer to the KB article How to Use
>> the Memory Form 
>> (http://kc.flexradio.com/**KnowledgebaseArticle50500.aspx
>> **)
>>
>> 5. FM mode has a new mode specific control panel that allows you to select
>> Memory channels from the console.
>>
>> 6. Full duplex when receiving on VFOA when transmitting on VFOB is now
>> supported.  Previously, full duplex was only supported when receiving on
>> VFOB while transmitting on VFOA.  This feature is usefule for SO2R on the
>> FLEX-5000 and satellite cross-band duplex on the FLEX-5000 with FLEX-VU5K
>> installed.
>>
>> 7. Added FLEX-5000 RX2 wave record/playback.
>>
>> 8. A Remove button (red X) is now provided on the Radio Chooser panel to
>> allow easier radio start up maintenance.
>>
>>
>> Thanks to so many of you who have continued to provide constructive
>> feedback
>> during the development process.   We would like to express our special
>> appreciation to our internal alpha/beta team for their tireless testing of
>> internal releases.
>>
>>
>> Enjoy,
>>
>> Greg
>>
>>
>>
> --
> ---
> A little a'disk and a little a'data.
> ---
> Bill H. in Chicagoland
> webcams at http://w9ol-towercam.webhop.**org
> weather at http://hhweather.webhop.org
> live weathercam chat hhweather.chatango.com
>
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Re: [Flexradio] ANNOUNCEMENT: POWERSDR v2.1.5 OFFICIAL RELEASE

[Graham Haddock]

Stan:

It only appears when you have more than one FlexRadio used with
the same computer.  You obviously need to buy several additional FlexRadios
so you can see and appreciate this feature.

--- Graham / KE9H

==


On Sat, Jul 23, 2011 at 5:31 PM, Stan  wrote:

> I don't know what this is about:
>
>
> "A Remove button (red X) is now provided on the Radio Chooser panel to
> allow easier radio start up maintenance."
>
> I don't know what the "Radio Chooser" is!
>
> Stan, WA2UET
>
>
>
> -Original Message- From: Tim Ellison, W4TME
>
> Sent: Saturday, July 23, 2011 6:58 AM
> To: flexradio@flex-radio.biz
> Subject: Re: [Flexradio] ANNOUNCEMENT: POWERSDR v2.1.5 OFFICIAL RELEASE
>
> The complete list of features and bug fixes for a particular release are
> included in the release notes for that release.  The feature highlights
> for PowerSDR v2.1.5 are listed below in Greg's e-mail announcements.
>
> TNF (Tracking Notch Filter) is a feature we are still working on
> finalizing, as we have added some additional enhancements to it since
> the "sneak peak" at Dayton and is slated for a future official release
> of PowerSDR.
>
> -Tim
> ---
> Tim Ellison, W4TME
> Internet Systems Admin. & Customer Support Engineer
> FlexRadio Systems™
> 4616 W Howard Ln Ste 1-150
> Austin, TX 78728
> Phone: 512-535-4713 Ext. 223
> Email: t...@flexradio.com 
> Web: www.flexradio.com 
>
> logo
> /Tune In Excitement™
> PowerSDR™ is a trademark of FlexRadio Systems/
>
>
> On 7/22/2011 10:49 PM, Michael Tondee wrote:
>
>> Does this release include the trackable notch? Or are we still waiting on
>> that?
>> Tnx and 73,
>> Michael, W4HIJ
>> On 7/22/2011 6:48 PM, Greg Jurrens wrote:
>>
>>> Dear FlexRadio customers:
>>>
>>>
>>> FlexRadio is pleased to announce the new Official Release of PowerSDR(TM)
>>> v2.1.5 is now available for immediate download from our website.
>>>
>>> PowerSDR 2.1 adds significant feature and performance enhancements over
>>> the
>>> prior official release to all models including the FLEX-5000A,
>>> FLEX-5000C,
>>> FLEX-VU5K upgrades, FLEX-3000, FLEX-1500, and SDR-1000.  We recommend
>>> that
>>> all customers upgrade to v2.1.5.
>>>
>>> The files can be downloaded at:
>>>
>>> PowerSDR v2.1.5 Integrated Installer / Setup Suite:
>>> http://support.flex-radio.com/**Downloads.aspx?id=371
>>>
>>> PowerSDR 2.1.5 Release Notes:
>>> http://support.flex-radio.com/**Downloads.aspx?id=372
>>>
>>>
>>> While the improvements are too numerous to detail, the following is a
>>> list
>>> of major changes since the previous official release, PowerSDR v2.0.22:
>>>
>>>
>>>
>>> 1. There is now an optional installation of the new FlexControl™ driver.
>>> Important: Please read the FlexControl Installation Errata Sheet
>>> regarding
>>> FlexControl use with Virtual Serial Port software.
>>>
>>> 2. FM has been completely redesigned including CTCSS tones, improved
>>> modulation/demodulation, soft limiting, FM squelch and more.
>>>
>>> 3. FM now has a dedicated Repeater Mode that allows you to set positive
>>> and
>>> negative offsets along with the frequency offset.  Split mode is no
>>> longer
>>> needed to operate FM repeaters.  For more information, refer to the KB
>>> article How to Use FM Repeater Mode (
>>> http://kc.flexradio.com/**KnowledgebaseArticle50501.aspx
>>> **)
>>>
>>> 4. We've added a new and improved MEMORY form that integrates with the
>>> new
>>> FM Repeater Mode. For more information, refer to the KB article How to
>>> Use
>>> the Memory Form (http://kc.flexradio.com/**
>>> KnowledgebaseArticle50500.aspx
>>> **)
>>>
>>> 5. FM mode has a new mode specific control panel that allows you to
>>> select
>>> Memory channels from the console.
>>>
>>> 6. Full duplex when receiving on VFOA when transmitting on VFOB is now
>>> supported.  Previously, full duplex was only supported when receiving on
>>> VFOB while transmitting on VFOA.  This feature is usefule for SO2R on the
>>> FLEX-5000 and satellite cross-band duplex on the FLEX-5000 with FLEX-VU5K
>>> installed.
>>>
>>> 7. Added FLEX-5000 RX2 wave record/playback.
>>>
>>> 8. A Remove button (red X) is now provided on the Radio Chooser panel to
>>> allow easier radio start up maintenance.
>>>
>>>
>>> Thanks to so many of you who have continued to provide constructive
>>> feedback
>>> during the development process.   We would like to express our special
>>> appreciation to our internal alpha/beta team for their tireless testing
>>> of
>>> internal releases.
>>>
>>>
>>> Enjoy,
>>>
>>> Greg
>>>
>>>
>>>
>>
>> __**_
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Re: [Flexradio] Silly question / Noise floor

[Graham Haddock]

Jean Marc:

I think it would be impossible (or at least difficult) to rescale the noise
without also
rescaling the signal levels in the same bandwidth.  Even though you can tell
them apart, the
signal processing algorithms can not, so it would introduce errors in the
reported levels of the incoming signals.  Currently, the panadaptor
accurately
reports the signal levels, and the noise floor that a receiver would see if
it was
set to the same bandwidth.

We normally use 0.5 kHz (500 Hz) for the 'normalizing filter width for noise
measurement."
It is the normal choice for reporting amateur radio sensitivity
specifications, and has been
used on all worldwide noise level charts I have seen from the ITU.

Best Regards,
--- Graham / KE9H

==

On Fri, Jul 1, 2011 at 1:28 AM, F1HDI  wrote:

> **
> Hello,
> Thanks for the explanations, now I have another silly question :
> Why not normalizing the noise floor value to either 1Hz (consistant with
> the -174dBm/Hz) or 2,5kHz which in general is the 'normalizing filter width
> for noise measurement'.
> I would vote for the 1Hz norm , I understand that it will expand the dBm
> axis of the panadapter/panafall by approx 13dB but , at least comparison
> could be made on the noise floor in between f1,5k, f3000 and f5000.
> 2,5kHz would give a noise floor greater than usual one with cw,ssb filters
> so will be useless on a graphical display.
>
> What would you bargain ?.
> Kind regards
> Jean-marc
>
> Le 29/06/2011 15:53, Robert McGwier a écrit :
>
> Forgive the typo,  117 = 10 * 48000/4096 Hz.
>
> On Wed, Jun 29, 2011 at 6:48 AM, Robert McGwier wrote:
>
>> Or put another way, if the filter is 10 bins wide (117 Hz = 10*4096/48000)
>> the noise power in that 117 Hz is the sum of the noise lower in those ten
>> bins and thus should be ten times or 10 dB bigger than the noise floor.
>> This is what the meter reads: all the power, noise + signal, in the ten bins
>> of the main part of the filter.  This does not account for the filter edges
>> perfectly but the difference is minuscule because of the tremendous shape
>> factor on the filter.
>>
>> Great discussion!
>> Bob
>> N4HY
>>   On Jun 28, 2011 7:55 PM, "Graham Haddock"  wrote:
>> > Hello Jean-Marc:
>> >
>> > Not a silly question at all. In fact, a great question.
>> >
>> > The panadaptor is fixed at 4096 bins. Each bin is essentially a receiver
>> > with bandwidth
>> > equal to the sample rate divided by 4096.
>> >
>> > Example: for a FLEX-1500, which has sample rate of 48,000 samples per
>> > second,
>> > the bin bandwidth is 48000/4096 = 11.7 Hz
>> >
>> > The noise level is lower on the panadaptor, because of the lower (bin)
>> > bandwidth.
>> > The difference in dB relative to the "S-Meter" window can be calculated
>> as
>> > the log of the difference in bandwidths.
>> >
>> > Example: The difference in noise level seen on the S-Meter, receiving
>> > through
>> > a CW filter of 500 Hz, and the panadaptor on a FLEX-1500 would be:
>> >
>> > dB = 10*LOG(Bandwidth-of-Receiver / Bandwidth-of-Panadaptor-Bin)
>> > = 10 * LOG (500/11.7) = 16.3 dB
>> >
>> > So the panadaptor noise floor will appear to be 16 dB lower than the S
>> Meter
>> > value with a 500 Hz filter selected.
>> >
>> > This only applies to noise. The level of a narrow signal (one that will
>> fit
>> > entirely inside
>> > of your filter) is independent of the filter bandwidth, so the level
>> shown
>> > is the true level
>> > and no correction difference applies.
>> >
>> > --- Graham / KE9H
>> > FlexRadio Systems
>> >
>> > ==
>> >
>> >
>> > On Tue, Jun 28, 2011 at 11:14 AM, F1HDI  wrote:
>> >
>> >> Hello,
>> >>
>> >> In Powersdr, how is computed the values of the noise floor across the
>> >> spectrum in spectrum, panafall modes ?.
>> >> To be more specific, those values relate to which bandwitdh ?.
>> >>
>> >>
>> >> Kind regards
>> >> Jean-marc F1HDI
>> >>
>> >> __**_
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>> >> FlexRadio@flex-radio.biz
>> >>
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Re: [Flexradio] Silly question / Noise floor

[Graham Haddock]

Hello Jean-Marc:

Not a silly question at all.  In fact, a great question.

The panadaptor is fixed at 4096 bins.  Each  bin is essentially a receiver
with bandwidth
equal to the sample rate divided by 4096.

Example: for a FLEX-1500, which has sample rate of 48,000 samples per
second,
the bin bandwidth is 48000/4096 = 11.7 Hz

The noise level is lower on the panadaptor, because of the lower (bin)
bandwidth.
The difference in dB relative to the "S-Meter" window can be calculated as
the log of the difference in bandwidths.

Example: The difference in noise level seen on the S-Meter, receiving
through
a CW filter of 500 Hz, and the panadaptor on a FLEX-1500 would be:

dB = 10*LOG(Bandwidth-of-Receiver / Bandwidth-of-Panadaptor-Bin)
 = 10 * LOG (500/11.7) = 16.3 dB

So the panadaptor noise floor will appear to be 16 dB lower than the S Meter
value with a 500 Hz filter selected.

This only applies to noise.  The level of a narrow signal (one that will fit
entirely inside
of your filter) is independent of the filter bandwidth, so the level shown
is the true level
and no correction difference applies.

--- Graham / KE9H
FlexRadio Systems

==


On Tue, Jun 28, 2011 at 11:14 AM, F1HDI  wrote:

> Hello,
>
> In Powersdr, how is computed the values of the noise floor across the
> spectrum in spectrum, panafall modes ?.
> To be more specific, those values relate to which bandwitdh ?.
>
>
> Kind regards
> Jean-marc F1HDI
>
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> http://www.flexradio.com/
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Re: [Flexradio] VAC does not work with Win7 64-bit

[Graham Haddock]

Tony:

On Windows 7, you need to right-click and run-as-administrator every time
you start VAC.  If you do not, then things like you describe can happen.

If you forgot, even once during your installation and setup, best to
uninstall
VAC completely (as administrator), then go back in and re-install and set
up,
each time, as administrator.

--- Graham / KE9H

==

On Sat, Jun 4, 2011 at 8:03 PM, Tony Estep  wrote:

> Hi folks,
>
> I had everything set up and running fine under Win7 32-bit: PSDR, VAC, VSP,
> MixW, CW Skimmer, and all the WSJT software. Setting up VAC was no problem;
> it worked just as the knowledge base said, right from the word go.
>
> But then I built this cool new 64-bit machine. It's all up and going,
> running great and fast as lightning with Win7 64-bit, and ever app I had
> before is installed and running -- except VAC.
>
> I installed the 64-bit version and brought up the control panel. When I try
> to do anything, it sez: Cannot change device property (0/X - Access is
> denied). The number 'X' is different, depending on what I try to do, but
> the
> message is otherwise always the same. The VAC window then crashes.
>
> I can actually set the cable parameters by clicking on Set and letting the
> window crash; when I come back, the parm is changed as I requested.
> However,
> the program does not work.
>
> The devices appear in the Windows Audio dropdown, and they appear as
> available devices in the PSDR Setup VAC page. I can assign audio streams to
> them; but no audio goes through. If I bring up the VAC control panel, it
> shows nothing in the rightmost columns.
>
> Without VAC there's not much I can do. Any suggestions?
>
> thanks,
> Tony KT0NY
>
>
> --
> "We don't want every single college grad with mathematical aptitude to
> become a derivatives trader." -- Barack Obama
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Re: [Flexradio] 1500 bandwidths

[Graham Haddock]

Hi Gedas:

The selectable IF bandwidths are the same.
The panadaptor width is limited to 44 kHz max.
Check out Sherwood Engineering's website.  He does not rank the Flex-1500 as
high as the 3000 and 5000, but it is still in the top ten receivers he has
ever tested.

--- Graham

==

On Wed, May 18, 2011 at 7:51 PM, Gedas  wrote:

> Does the flex 1500 have the same bandwidths available to it as the 5000A?
>  I was quite impressed with the 5000A for SWL and am wondering how the 1500
> would work in RCV mode.
>
> Gedas, W8BYA
> Gallery at http://gedas.me
>
> Light travels faster than sound..
> This is why some people appear bright until you hear them speak.
>
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Re: [Flexradio] Preamp Not Working

[Graham Haddock]

Joe:

The preamp in the 5000 is locked ON by design on 10 Meters and 6 Meters.
You are not allowed to turn it off.

Are you having sensitivity problems?

--- Graham

==

On Tue, May 17, 2011 at 3:35 PM, Joe Word  wrote:

> On 6 and 10 meters my preamp is not working. The ON is grayed out and
> the blue bar below is lit, but can not turn it off or on ( I think
> it's off). Other bands are OK except 160 meter and guess it does not
> work there by design. Any thoughts?
>
> I am running a 5000A, software version 2.0.22 and XP on Core2 Duo.
>
> Joe  N9VX
>
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Re: [Flexradio] [FlexEdge] Measuring current demand for the Flex 1500

[Graham Haddock]

Hi Brian:

Well, as you say, the switchers should be much better regulated.  Beware the
RF switching
noise/harmonics.  I have had to replace several switcher wall warts in my
shack
with linear regulated warts to quiet down the RF environment.  I got tired
of the
"noise humps" chasing me across 30 and 40 Meters.

The LiFePO4 batteries have low source impedance and should work fine.

--- Graham

==



On Mon, May 16, 2011 at 10:57 PM, Brian Lloyd wrote:

>
>
> On Mon, May 16, 2011 at 4:14 PM, Graham Haddock wrote:
>
>> Just one additional comment...
>>
>> I cringe when I hear talk about using wallwarts to power the FLEX-1500.
>>
>> They will work great in receive.
>>
>> BUT the transmitter will work better (stay more linear) with a power
>> supply that
>> does not move up and down in voltage as the load goes up and down.  Most
>> wallwarts have high internal resistance as part of their consumer
>> protection.
>>
>
> Even the little switchers? The old transformer types were awful.  I haven't
> tried to measure one of the switchers under load. I thought that they would
> just drop out under overload rather than sag.
>
>
>> The FLEX-1500, or any transmitter, for that matter, will be much happier
>> in transmit
>> with a regulated power supply.  At least with more regulation than most
>> wallwarts provide.
>>
>
> I am probably going to end up going with a LiFePO4 pack 'cause then I can
> operate where there is or is not power.
>
> --
> Brian Lloyd, WB6RQN/J79BPL
> 3191 Western Dr.
> Cameron Park, CA 95682
> br...@lloyd.com
> +1.767.617.1365 (Dominica)
> +1.931.492.6776 (USA)
> (+1.931.4.WB6RQN)
>
>
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Re: [Flexradio] [FlexEdge] Measuring current demand for the Flex 1500

[Graham Haddock]

Just one additional comment...

I cringe when I hear talk about using wallwarts to power the FLEX-1500.

They will work great in receive.

BUT the transmitter will work better (stay more linear) with a power supply
that
does not move up and down in voltage as the load goes up and down.  Most
wallwarts have high internal resistance as part of their consumer
protection.

The FLEX-1500, or any transmitter, for that matter, will be much happier in
transmit
with a regulated power supply.  At least with more regulation than most
wallwarts provide.

--- Graham

==

On Mon, May 16, 2011 at 5:10 PM, Brian Lloyd  wrote:

> On Mon, May 16, 2011 at 1:19 PM, John Stuart 
> wrote:
> >
> > Hi Brian,
> >
> > Is your “power measuring device” a Saratoga Power Meter (I have one of
> those),  the PWRcheck from West Mountain Radio, or another device?
>
> It is from an outfit called Medusa Electronics but it is very similar to
> both the Saratoga Power Meter and the PWRcheck from WMR. The key is that
> the
> current shunt is in the negative lead and if you have all your devices
> grounded together and back to the power supply, you will get errors. My
> understanding is that the PWRcheck from WMR does not have this problem.
>
> >
> >
> >
> > I have a Fluke 289 that records data files so I could measure my F1500’s
> current draw (but not IxE power or integrated mAHrs etc.).
>
> I use it to monitor the capacity removed from or put back into the battery
> when running during field day. That way I can keep track of how much we
> have
> left and when the battery is close to full charge again.
>
> > What mode would you be using (phone, cw, data)?
>
> I expect to operate almost exclusively data, e.g. Olivia, Contestia,
> DominoEX, or THOR. They are what I run most of the time.
>
> --
> Brian Lloyd, WB6RQN/J79BPL
> 3191 Western Dr.
> Cameron Park, CA 95682
> br...@lloyd.com
> +1.767.617.1365 (Dominica)
> +1.931.492.6776 (USA)
> (+1.931.4.WB6RQN)
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> who are using beta versions of the software.
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Re: [Flexradio] [FlexEdge] Measuring current demand for the Flex 1500

[Graham Haddock]

Brian:

I would have told you to use 400 mA typical for receive, and more like 1.4
Amps
typical in transmit.  Receive current rises some with the frequency band as
the DDS and
quadrature dividers draw more power when you clock them faster.  PA
efficiency
walks around some band to band, and with actual antenna impedance.

--- Graham

==

On Mon, May 16, 2011 at 12:40 PM, Brian Lloyd wrote:

> I am putting together a portable station using my Flex 1500. I decided that
> I can probably get away with a wall-wart supply instead of carrying around
> the 25A supply I use for the 3000. I am also thinking about a reasonable
> size (and price) for a LiFePO4 (Lithium-Iron-Phosphate) battery pack to run
> things. (LiFePO4 is lighter and easier to charge than NiMH and WAAAY
> lighter
> than sealed lead-acid.) To this end I need to figure out what the drain of
> the 1500 is in both RX and TX at full power. I have a power-measuring
> device
> that can be put in the power feed that measures both voltage and current,
> and then calculates and displays volts, amps, watts, watt-hours, and
> amp-hours. These devices seem to be pretty common as they were developed
> for
> RC modelers to calculate battery pack needs and battery pack health.
>
> But I ran into a bit of a problem. I noticed that I was getting strange and
> sometimes low readings that didn't make sense, i.e. the radio drawing only
> 5W from the supply when it was producing 4W of RF output. 80% efficiency of
> a linear class-AB PA is *very* unlikely. Then I noticed that the values
> changed when I disconnected the external reference. I discovered that the
> watt-hour meter measures current in the negative/ground lead and not the
> positive/power-in lead. Multiple ground paths were causing errors. If you
> have one of these devices it is important to determine whether the current
> shunt is in the positive or negative lead or it will provide incorrect
> readings.
>
> FWIW, my 1500 draws 300mA on RX and 1250 mA on TX at  full 5W output.
>
> --
> Brian Lloyd, WB6RQN/J79BPL
> 3191 Western Dr.
> Cameron Park, CA 95682
> br...@lloyd.com
> +1.767.617.1365 (Dominica)
> +1.931.492.6776 (USA)
> (+1.931.4.WB6RQN)
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Re: [Flexradio] Flex-1500 and MixW 3.0.1b

[Graham Haddock]

Bob:

If you are using VAC to connect the audio between PowerSDR and MixW, make
sure
that the settings inside VAC are not causing re-sampling to occur.  Since
the default
sampling rate for PCs is 44.1 ksps, rather than the 48 ksps that the 1500
runs at,
sometimes VAC will resample to 44.1, then resample back to some multiple of
12
for the audio decoder programs.  Make sure that all sample rates in VAC are
set at
48 ksps. (or 12 or 24)

--- Graham

==

On Wed, May 11, 2011 at 11:57 AM, F5UL  wrote:

> Good evening, all on the list!
> I'm new member and user of Flex products, but i'm not ignorant about SDR
> and direct conversion Rx/Tx.
> The Flex-1500 is a wonderfull transceiver, in use since 3 days and working
> without problems with Ham Radio de Luxe,
> MixW 3.0.1b, WSPR
> I have a, let say, small problem with MixW, witchever version, with the
> waterfall display. It's not sharp and easy to read or
> distinct each signal...
> With HRD no problem, each signals are well defined...
> Did anybody have an explication or an answer on this problem?
> Thank you in advance, good evning!
> F5UL - Bob
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Re: [Flexradio] 1500 and Elecraft Transverter

[Graham Haddock]

Tom:

Before you start hacking your transverter hardware, I would experiment with
the
Preamp/IF gain setting on the front panel of PowerSDR for the Flex-1500.

You have five steps of combined preamp/IF gain that are settable from
-10 to +30

The overload points for the basic FLEX-1500 receiver are:

Preamp/GainOverload
-10   0 dBm
  0-10 dBm
+10  -20 dBm
+20  -30 dBm
+30  -40 dBm

So, if your transverter has 25 dB of Gain, then on the default setting
of +20 for 10 Meters (your IF frequency), then the combination of
the  Flex-1500 and the transverter will overload at -55 dBm, which
co-insides with what you are seeing.

With that much gain in your transverter, I would run the FLEX-1500
IF gain at 0 dBm, or perhaps +10 if needed for take-over gain, rather than
+20.

These settings would move the overload
point up by 10 or 20 dB.

You should also look at the impact on the noise figure of the combined
system,
but you are definitely running too much gain.

Whether you take the gain out of the transverter by removing a gain stage,
or take it out of the FLEX-1500 by adjusting the preamp/IF gain should
be equivalent as far as system performance.

--- Graham / KE9H

==



On Sun, May 1, 2011 at 10:46 PM, Tom Bray  wrote:

> I have a 2M Elecraft transverter which I am using with my Flex 1500.  The
> transverter has almost 25dB of gain.
>
> The problem is that when I take it up on the local mountain, another local
> station does a real number on the 1500, the transverter seems to take it in
> stride but it overloads the A/D in the 1500.  Now I am not sure I was
> thinking clearly enough during the last contest to try turning on the 10db
> attenuator but according to the S meter, the local station was hitting the
> transverter somewhere around -50dBm.  For the record my "neighbor" informed
> me that I was messing up his 5000 an equivalent amount when we were both on
> 2M.
>
> In going through the Elecraft manual, they detail an option to remove the
> MMIC (U1 to be exact) which follows the preamp, this should drop the gain of
> the transverter by around 12dB.  In the manual they recommend this change if
> an outboard preamplifier is used as this will cut down the noise a bit and
> aid in preserving system dynamic range.
>
> The transverter is very quiet and the combination as it currently stands, I
> can't measure the bottom end of the sensitivity with the Agilent
> communication analyzer that I have at work - I can't reduce its output to
> the point where the 1500 with the transverter can't decode the carrier
> (somewhere around -130dBm).  Hooked to an antenna the noise level is at best
> -110dBm.
>
> I am wondering if it would make more sense to remove the MMIC as opposed to
> turning on the 1500's attenuator.
>
> Tom
> WB8COX
>
>
>
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Re: [Flexradio] Flex-1500 spurious when using external reference

[Graham Haddock]

Kjeld:

Any sidebands or trash on your 10 MHz reference, that are within the
bandwidth of
the Phase Lock Loop reference multiplier in the DDS will appear on the local
oscillator
in the 1500.  Which means that they will appear on both transmitted and
received signals.

Analog devices does not specify the bandwidth of their DDS reference PLL,
but I assume it is on the order of 1 MHz or so.

So, if you want to preserve the performance of the receiver, the 10 MHz
reference will need to be clean to greater than -80 dBc within a
megaHertz of 10 MHz.  Any spurs that are further away, such as harmonics
of 10 MHz are not an issue.

--- Graham / KE9H

==

On Wed, Apr 13, 2011 at 8:29 AM, Kjeld Bülow Thomsen  wrote:

> Hello Graham,
>
>
>
> Looking on the specs of my Isotemp 134-10 oscillator showed that spurious
> attenuation should be >60 dB. Looking at the 10 MHz signal on the 1500
> showed a lot of spurii about 60 dB down. In my scrapbox I found a 10 MHz
> 8-pole quarzfilter. Putting this filter in line with the 10 MHz signal
> cleaned it up. I do not have ground loops and the power supplies are clean.
> But the 60 dB attenuated +/- 10 kHz spurious are still there when I lock
> the
> 1500 to the GPSDO. And they disappear when using the internal reference.
>
>
>
> Kjeld/OZ1FF
>
>
>
> Fra: gra...@flex-radio.com [mailto:gra...@flex-radio.com] På vegne af
> Graham
> Haddock
> Sendt: 2011-04-13 05:07
> Til: Kjeld Bülow Thomsen; FLEXRADIO
> Emne: Re: [Flexradio] Flex-1500 spurious when using external reference
>
>
>
> Kjeld:
>
> Do you have access to another 10 MHz reference that could be substituted
> and
> used
> to compare? It does not have to be high accuracy for the comparison test.
>
> I suspect a 10 kHz switching power supply or some other 10 kHz source
> associated with your GPSDO as causing the problem.
>
> You might also try making sure the case of the FLEX-1500 shares a common
> ground with the GPSDO.  Do not depend on the shield of the 10 MHz coax,
> since
> it floats at the FLEX-1500 input, to allow the 1500 to reject ground loop
> noise.
>
> --- Graham / KE9H
>
> ==
>
> On Tue, Apr 12, 2011 at 10:23 AM, Kjeld Bülow Thomsen 
> wrote:
>
> I’m using my Flex-1500 with transverters on 1,3 – 24 GHz. The radio and
> most
> of the transverters are locked to a 10 MHz GPS-disciplined oscillator. When
> working weak signals there are only very few spurious frequencies. During
> the last weeks there has been tropo conditions with signals in the 59
> +20-30
> dB range. All these signals appeared full of spurious +/- 20 kHz. As all
> signals was looking in the same way when exceeding S9 I decided to
> investigate the problem.
>
>
>
> The pictures on http://www.oz1ff.dk/pages/flexradio.html a screen dump of
> a
> -60 dBm signal on 28,2 MHz from a clean source. Dia1 is with external
> reference and shows +/- 10 kHz spurious. Dia2 shows the signal with the 10
> MHz reference switched off. Increasing the signal generator level to more
> than -40 dBm with 30 dB preamp gain overloads the receiver. But that is as
> specified. The level from the external 10 MHz source is +2 dBm and sine
> wave.
>
>
>
> The external reference is essential for weak signal work. I don’t expect
> this to be a software problem. Any suggestions for a solution to this
> annoying problem?
>
>
>
> Vy 73 de OZ1FF - Kjeld
>
>
>
> Phone +45 7352 6050
>
> SMS   +45 4021 1119
>
> Skype   oz1ff-1
>
>
>
>  <mailto:kj...@oz1ff.dk> mailto:kj...@oz1ff.dk
>
>  <http://www.oz1ff.dk/> http://www.oz1ff.dk
>
>
>
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Re: [Flexradio] Flex-1500 spurious when using external reference

[Graham Haddock]

Kjeld:

Do you have access to another 10 MHz reference that could be substituted and
used
to compare? It does not have to be high accuracy for the comparison test.

I suspect a 10 kHz switching power supply or some other 10 kHz source
associated with your GPSDO as causing the problem.

You might also try making sure the case of the FLEX-1500 shares a common
ground with the GPSDO.  Do not depend on the shield of the 10 MHz coax,
since
it floats at the FLEX-1500 input, to allow the 1500 to reject ground loop
noise.

--- Graham / KE9H

==

On Tue, Apr 12, 2011 at 10:23 AM, Kjeld Bülow Thomsen  wrote:

> I’m using my Flex-1500 with transverters on 1,3 – 24 GHz. The radio and
> most
> of the transverters are locked to a 10 MHz GPS-disciplined oscillator. When
> working weak signals there are only very few spurious frequencies. During
> the last weeks there has been tropo conditions with signals in the 59
> +20-30
> dB range. All these signals appeared full of spurious +/- 20 kHz. As all
> signals was looking in the same way when exceeding S9 I decided to
> investigate the problem.
>
>
>
> The pictures on http://www.oz1ff.dk/pages/flexradio.html a screen dump of
> a
> -60 dBm signal on 28,2 MHz from a clean source. Dia1 is with external
> reference and shows +/- 10 kHz spurious. Dia2 shows the signal with the 10
> MHz reference switched off. Increasing the signal generator level to more
> than -40 dBm with 30 dB preamp gain overloads the receiver. But that is as
> specified. The level from the external 10 MHz source is +2 dBm and sine
> wave.
>
>
>
> The external reference is essential for weak signal work. I don’t expect
> this to be a software problem. Any suggestions for a solution to this
> annoying problem?
>
>
>
> Vy 73 de OZ1FF - Kjeld
>
>
>
> Phone +45 7352 6050
>
> SMS   +45 4021 1119
>
> Skype   oz1ff-1
>
>
>
>   mailto:kj...@oz1ff.dk
>
>   http://www.oz1ff.dk
>
>
>
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Re: [Flexradio] Flex 1500 query DOA

[Graham Haddock]

Graham:

I would recommend that you contact Klaus, in our EU support center,
and see if he can help you get going.

*Technical Support & Service (EU)*
+49 4751 900501
eu-serv...@flexradio.com

--- Graham / KE9H

==


On Sun, Apr 10, 2011 at 11:52 AM, Graham Smith  wrote:

> Dear Flexers,
>
> Many thanks to those who have commented on my infrequent post.
>
> I have still not managed to the 1500 I bought in August 2010 to work.
>
> I have tried several machines and now have built a PC that meets the
> spec quoted on this list and on the pages often quoted.  The machine runs
> windows 7 64 bit home premium and PSDR point22 version.
>
> Sometimes it will switch on and give about ten seconds of noise in the
> speakers then stops,, I can move the cursopr around and tune and cycle
> the on/off on the programme with nothing apparently physically happening.
>
> If I shut the radio down and the shut the programme down and power up it
> will sometimes come back ... but then will offer ten seconds of noise and
> then die.
>
> I tried again today with the newly built PC and the latest software
> which asked for a firmware update of the 1500 but still no joy.
>
> Informal advice is suggesting a radio that was DOA back in August what
> say you?
>
> Regards
>
> Graham G4NMD
>
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Re: [Flexradio] PA Protection in Flex-1500?

[Graham Haddock]

On Sun, Mar 20, 2011 at 10:18 AM, Jason Burgess
wrote:


> Oh and PowerSDR feature request: Make the TUNE power an adjustable slider
> on the front panel instead of me having to go into the setup menu all the
> time or only be able to adjust it during the TUNE phase. Would really come
> in handy when turning with an amp in the mix.
>
>
Jason:

It basically already does this.
If you are in transmit, the slider is controlling transmit power.
If you are in Tune, the slider is controlling Tune power.
And, PowerSDR remembers them independently.
Try it !

--- Graham

==
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Re: [Flexradio] PA Protection in Flex-1500?

[Graham Haddock]

Jason:

The PA device in the FLEX-1500 is running at a low power level, relative to
its maximum capability.  So its protection is in its derating.  I would not
worry about it needing any protection.  Hook it up, and enjoy.

--- Graham / KE9H

==

On Sun, Mar 20, 2011 at 10:18 AM, Jason Burgess
wrote:

> Hi all,
>
> I recently acquired a Yaesu FL-110 amplifier for my Flex-1500. Runs great
> even with 5W input. I have a 300W AD Pathfinder tuner inline, so the
> Flex-1500 feeds the amp, which feeds the tuner, which connects to the 80M
> loop I have in the backyard.
>
> I am using RF sensing to key the amp. I am planning on doing the
> modification for full-drive at 5W input listed on this webpage:
>
> http://www.xs4all.nl/~pa0fri/Mods/FL110/fl110eng.htm
>
> However, near the end of the article there is a bit of a warning that using
> the RF sensing mode on the amplifier can lead to a delay which blew the
> finals in the Yaesuu-817 PA the person was using. I know the Flex-1500 does
> not have an SWR bridge so I am guessing it has no protection mechanism for
> high SWR or transmitting into unterminated loads?
>
> How likely would I be to damage or blow the PA in the 1500 using RF sensing
> on the FL-110? It has the ability to be keyed via PTT and I would just need
> to make up a Flexwire cable to do so...
>
>
> My procedure for using the amp is this:
>
> 1. Turn off amp - the only way to "bypass" it.
>
> 2. Set Flex-1500 "tune" drive to 100% (the AD Pathfinder is NOT a QRP tuner
> and needs at least 5W to tune properly). Oh and PowerSDR feature request:
> Make the TUNE power an adjustable slider on the front panel instead of me
> having to go into the setup menu all the time or only be able to adjust it
> during the TUNE phase. Would really come in handy when turning with an amp
> in the mix.
>
> 3. Let the tuner auto-tune so that a 1:1 SWR is presented to the
> Flex/amplifier side. I feed the loop with minimal run of coax into a 4:1
> balun fed to ladder line, so my losses are pretty minimal even with high
> SWR.
>
> 4. Now that a 1:1 SWR is present on the line facing the gear, the amplifier
> will operate (AFP protection kicks in on it if the SWR goes above 3:1). Turn
> on the amp and start to operate. It takes about 25% of power on the
> Flex-1500 to make the amp kick in.
>
> On most bands at 25% the amp puts out about 10W... The most I get out of it
> is 85W on 20M at 5W in. Post mod I expect to get it to full drive with 5W. I
> mostly operate PSK and digital modes, so I don't need much more than 50-100W
> in most cases.
>
>
> So - being a new ham and this being my first real amplifer experience, I'd
> appreciate any feedback on my methods - are they sound? Am I at risk to
> damaging the PA in the Flex-1500? Should I have just purchased the 3000 in
> the first place? LOL (don't answer that - my 5000 is sitting in the other
> room so I have that covered LOL).
>
> Thanks!
> Jason
> -VA1JSN
>
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Re: [Flexradio] Yaesu Production Suspended

[Graham Haddock]

It looks like the press is playing fast and loose with the names of
Fukushima Prefecture and the City of Fukushima, and the
"Fukushima Dai-Ichi" power plants which are on the coast.

It looks like the City of Fukushima, which is the capital of Fukushima
Prefecture is about 25 miles inland from the power plant, and
separated from the coast by a coastal mountain range.

So, I guess it all depends on which way the wind blows.

--- Graham / KE9H

==


On Thu, Mar 17, 2011 at 9:58 AM, Bob McGwier  wrote:

> Man, FUKUSHIMA?
>
> As in Fukushima that holds the Dai-Ichi nuclear power plant?  I would
> expect
> them to NEVER be able to reopen that plant.
>
> This is not good news for amateur radio.  Competition in Japan and in the
> US
> has brought us to a level of radio technology that many of us NEVER
> believed
> we see and at really good prices.  You can buy a great radio right now for
> about the same dollars (even after inflation) that I did in the late
> 1970's!
>
> I hope they make a come back.
>
> Bob
>
> On Thu, Mar 17, 2011 at 9:49 AM, K9DUR  wrote:
>
> > Aren't we glad that Austin is not in an earthquake zone!
> >
> > From the CQ Newsroom:
> >
> > 
> > Yaesu Temporarily Suspends Production After Earthquake - All Vertex
> > Standard
> > employees and their families are said to be safe.
> >
> > Production of Yaesu radios at Vertex Standard's factory in Fukushima,
> > Japan,
> > has been temporarily halted due to earthquake damage.
> >
> > In an open letter to the amateur radio community, Vertex Standard CEO and
> > President Jun Hasegawa expressed his gratitude for the many "kind words
> and
> > thoughts about us during this difficult time." He reports that all Vertex
> > Standard employees and their families are OK, although the company has
> not
> > been able to reach its many dealers and subcontractors located near the
> > coast. "We just hope that they are alive," he writes.
> >
> > Hasegawa also reports that the Yaesu factory in Fukushima suffered
> > "minimal"
> > damage from the earthquake but has been temporarily shut down
> nonetheless.
> > He says he expects it to be back in normal operation within one to two
> > weeks
> > and asks for everyone's understanding and cooperation.
> >
> > At this time, there have been no public reports received from any of the
> > other Japanese amateur radio manufacturers.
> > 
> >
> > 73, Ray, K9DUR
> > http://l9dur.info
> >
> >
> >
> >
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Re: [Flexradio] Flex 1500 No 12/10 Meter RF output

[Graham Haddock]

Bob:

Please export a copy of your database and email it to me.
Then, I can tell you whether it is a software update issue, or an
unrelated hardware problem.

To do that, turn on the radio, open PowerSDR, goto SetUp, then,
along the lower left of the SetUp/General box, there is a button labeled
Export Database.

Press it, and a copy of your database will appear on your desktop,
labeled with your serial number, time stamp, ending in .xml

Please email that file to me.

Thanks,
--- Graham/ KE9H

==

On Sat, Mar 12, 2011 at 4:35 PM, Bob Young  wrote:

> I recently installed PowerSDR 2.0.20 RC2 for my Flex 1500 and just
> discovered that I no longer have any RF power output on 12 Meters or 10
> Meters.
>
> I can receive on 12 and 10 Meters just fine, but when I transmit there is
> no RF output in any mode. All of the other bands seem to be working just
> fine.
>
> I noticed during the install that the radio too a firmware update. Could
> that be the problem?
>
> Can I do a rollback to see if that corrects the problem?  Any suggestions
> would be appreciated.
>
> Thanks
>
> Bob Young K9JRY
>
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Re: [Flexradio] FLEX-1500 on Acer A1

[Graham Haddock]

Kjeld:

A very impressive station, and the FLEX-1500 at the center of it !!!

Thank you for the pictures and the diagram.

--- Graham / KE9H

==

On Wed, Mar 2, 2011 at 10:33 AM, Kjeld Bülow Thomsen  wrote:

> Just downloaded PSDR 2.0.19 RC1 on my Acer Aspire 1 with Intel N270 CPU 1,6
> GHz and 1,48 GB RAM. To get 1024x768 resolution on the 8,9” screen I use
> the
> freeware program A1Ctl.
>
>
>
> Connected the FLEX-1500 to the PC and after some setup changes the radio
> runs flawless on the tiny PC. No sound cracks and CW with a straight key at
> >20 WPM. CPU runs @60% with panafall and WIFI-card enabled.
>
>
>
> Amazing!
>
>
>
> My normal station setup:
> http://oz1ff.dk/images/OZ1FF%20Microwave%20Station.pdf.
>
>
>
> Vy 73 de OZ1FF - Kjeld
>
>
>
> Phone +45 7352 6050
>
> SMS   +45 4021 1119
>
> Skype   oz1ff-1
>
>
>
> mailto:oz...@mail.dk
>
> http://www.oz1ff.dk 
>
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Re: [Flexradio] CPU performance spike

[Graham Haddock]

Mike:

XP does not do this.  Vista and Windows 7 do it.  MicroSoft knows about it,
and is working on it.

Move the USB buffer slider towards "Conservative." (Setup/General/Options)
to reduce the peaking.

Hint: You need to stop PowerSDR before the slider can be moved.
Then "Start"  PowerSDR again.

--- Graham

==


On Thu, Feb 24, 2011 at 10:17 PM, Mike March  wrote:

> I'm using a 1500, 2.0.19 and a Sony Vaio laptop.
> As I monitor the CPU usage in both the software and in the Task Manager...I
> notice a spike every 15 seconds.
> Typically 5-10% then spiking to 60-70%...every 15 seconds.  Both transmit
> and receive are effected by this.
> When I shut down the software, the spikes stop.
>
> Why the regular spikes?
>
> Thanks...
> --
>
> Michael March, K4QU
> 242 Clay Hill Dr.
> Winchester, VA  22602
> http://sites.google.com/site/marchmagneticpaddles/
> mikek...@gmail.com
> mar...@frederick.k12.va.us
> 540-662-4279 home
> 540-539-8500 cell
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Re: [Flexradio] CPU % vs Window Size

[Graham Haddock]

Kevin:

This is normal behavior.
It takes more computer power to draw a bigger sized screen (for things that
are changing.)

Try setting the panadaptor display to OFF and see what happens.

--- Graham

==

On Thu, Feb 24, 2011 at 12:34 PM, Kevin Hobbs  wrote:

> Hi
>
>
>
> I have been experimenting with the PowerSDR window size. By changing the
> vertical height of the window (to get more / less panadpter size), I see my
> CPU % very by as much as 20% (from 5 - 25) with only minimal changes in the
> size. Does anyone else see this?
>
>
>
> 73 Kevin
>
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Re: [Flexradio] Reverse Polarity Flex 1500

[Graham Haddock]

Les:

There is a three amp fuse and a reverse polarity diode that will blow the
fuse
to protect the Flex-1500.  It is a cheap automotive fuse, so you can buy at
local
auto parts store, or order from Mouser.  I can send you disassembly and
replacement instructions for the fuse, if you are comfortable opening up the
case on your 1500.  Probably not any other damage to your 1500.  Or you
can send it back here for fuse replacement.

I am more concerned that the USB cable was getting hot.  This means the
radio was not properly grounded and the power supply was seeking ground
through the computer cable.  We have had a certain un-named PowerSDR
software developer do something like this and burn up the motherboard in
their computer.

--- Graham / KE9H

==

On Fri, Feb 18, 2011 at 12:13 PM, Les Rayburn  wrote:

> I loaned out my Flex 1500 along with a 222 transverter to a friend who
> wanted to experiment with the set up at his home for a few days. He called
> me and said that he couldn't get the unit to work, and asked if I would take
> a look. I went over after work expecting to find the usual assortment of
> software related issues.
>
> Instead, when I was looking over his connections, I happened to touch the
> USB connector on the front of the unit. It was hot to the touch, and I
> immediately realized something was amiss. We unplugged
> everything, and that's when I spotted his error. I had provided a small
> switching 13 volt power supply equipped with Anderson PowerPoles. He was
> unfamiliar with them, and didn't realize that they were reversed in
> alignment. When he couldn’t get red to mate with red (physically) he instead
> mated red to black. The result was that he applied reverse polarity to the
> Flex 1500 for quite some time.
>
> The unit now refuses to power up (no power indication on the front panel
> LED switch) and otherwise function.
>
> So, how screwed am I? And no, this isn't one of those "I have a friend"
> stories, when the friend is me. Callsigns have simply been changed to
> protect the innocent.
>
> 73,
>
>
> Les Rayburn, N1LF
> EM63nf
> 121 Mayfair Park
> Maylene, AL 35114
>
> 6M VUCC #1712
> Grid Bandit #222
> Life Member Central States VHF Society
>
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Re: [Flexradio] Transverter fo Flex 1500 Question

[Graham Haddock]

Mike:

If you are using the 0 dBm transverter ports, then the FLEX-1500 is already
unlocked.

Unlocking is only a issue if you are trying to use the 5 W RFPA output
port to drive the transverter.

--- Graham / KE9H

==

On Tue, Feb 8, 2011 at 2:54 PM, Mike Ellerson  wrote:

> I am in the process of adding a transverter to my Flex 1500 for 2 meters.
> Someone mentioned that I would need an unlock code for PowerSDR from Flex to
> use it in the upper ranges of the 2 meter band. I emailed Flex support and
> did not hear anything back. Just curious of this is the case.
>
> Thanks
> Mike
> KS4JU
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Re: [Flexradio] Flex 3000 Newbie question

[Graham Haddock]

Sasi:

If one of the PCI slots in your GX620 is open, then you should be able to
purchase
a firewire-PCI card and plug it in there.

--- Graham / KE9H

==

On Sat, Jan 8, 2011 at 8:21 AM, Nayar, Sasi (PIRSA-SARDI) <
sasi.na...@sa.gov.au> wrote:

> Hi all
>
> I ordered a Flex 3000 last week and am eagerly waiting for the radio to run
> up. In the mean time I have been trolling through all the literature
> available on this great radio. My plan is to use this radio exclusively on
> digital modes. I have a Fujitsu Lifebook computer with a burst soundcard. My
> observation so far is that the Flex 3000 does not use the sound card of the
> computer. Am I correct in assuming that I can get away using this computer
> without the soundcard? Will this impact on the operation of this radio? The
> issue I have is that my desktop computer in the shack (A Dell GX620) does
> not have a firewire port and there is abslutely no room in the machine to
> accomodate one. The last resort is to buy another laptop.
>
> 73
> Sasi
> VK5SN
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Re: [Flexradio] Plasma TV RF noise

[Graham Haddock]

Solution for noise from Plasma TVs:

http://hammerthrow.org/what-is-the-hammer/facts/

--- Graham / KE9H

==

On Wed, Jan 5, 2011 at 4:58 PM, Tony  wrote:

>
>
> On 1/5/2011 4:53 PM, Tim Ellison wrote:
>
>> I have thee Sony LCDs in the house.  No noise at all.>
>> -Tim
>>
>
> Same here with my 32" and 46" Sharp Aquos LCD's.
>
> Tony -K2MO
>
>
>
>
>> -Original Message-
>> From: flexradio-boun...@flex-radio.biz [mailto:
>> flexradio-boun...@flex-radio.biz] On Behalf Of Simon HB9DRV
>> Sent: Wednesday, January 05, 2011 3:34 PM
>> To: 'Mike Penkas'; 'Gary Warner'; flexradio@flex-radio.biz
>> Subject: Re: [Flexradio] Plasma TV RF noise
>>
>> I have a 40" Sony Bravia LED just a few metres from my loop antenna. No
>> noise or pollution whatsoever.
>>
>> Simon HB9DRV
>> http://sdr-radio.com
>>
>>
>> -Original Message-
>> From: flexradio-boun...@flex-radio.biz
>> [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Mike Penkas
>> Sent: 05 January 2011 21:15
>>
>> I can get on whenever I want.  Next set will be a LED display.  I hear
>> Sony's are clean.
>>
>>
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>> signature database 5763 (20110105) __
>>
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>>
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Re: [Flexradio] Flex 1500 Panadapter Display

[Graham Haddock]

Tom:

If you turn off SR (Spur Reduction), the width of the 1500 panadaptor is
more like 44 kHz.

Moving the IF setting up or down has almost no impact on the performance
of the radio, unless you set it to zero, in which case it will not receive
AM.
It would still be fine for CW or SSB or digital modes, and the BFO will be
in the
exact center of the panadaptor.

If you want to offset the operating frequency to the left of the panadaptor,
set the
IF to something like minus 9 kHz.

The purpose of the IF control is to change the relationship of the DDS or LO
frequency with respect to the receive filter. As a general rule, you don't
want the
DDS/LO frequency to be inside the receiver passband, or at zero if you care
about AM.
Beyond that, put it where you want.

--- Graham

==



On Tue, Jan 4, 2011 at 5:52 PM, Tom Bray  wrote:

> The Flex 1500 samples at half the speed of the 3000, which also happens to
> sample at half the speed of the 5000.  The range of the Pan Display is only
> a bit over 30KHz total on the 1500 so there isn't any range on the slider.
>
> So how do the settings in the DDS menu work?
> - Moving the IF (Hz) setting down or up, how does that impact the
> performance of the radio?
> - How does USB versus LSB get impacted by these settings?
> - What about the LSB needing negative numbers?
> - Do the other settings have any useful purpose?
>
> The plan is to have the Flex 1500 running on 2M (Elecraft transverter) for
> the VHF contest January 22.  Basically I need to sit on 144.200 and be able
> to monitor the 20KHz above that.  I haven't decided if I want to also use it
> for 6M receive  - I have a TS480 for that but I really like the PSDR
> interface for tracking activity.
>
> Tom
> WB8COX
>
>
> On 1/4/2011 8:21 AM, Tom Bray wrote:
>
>> Is there anyway to move the receive/transmit frequency in the panadapter
>>> display?  With it set to the .5 setting it shows about 10KHz up and the rest
>>> is all below the listening to frequency.
>>>
>>> I would like to be able to see 20KHz up and at most 10KHz below.
>>>
>>
> On 1/4/2011 7:31 AM, Jim Kunowsky wrote:
> Can't you use the PAN slider?  I can do it on my F3K.
>
>
> Make sure Spur Reduction is OFF
> And you can fiddle with the DDS IF value to something lower than the
> default 9K for USB modes.  You will have to use negative numbers for LSB
> modes.
>
>
> -Tim
>
>
>
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Re: [Flexradio] FLEX 1500, Serialnumber and firmware lost.

[Graham Haddock]

Martin:

Is the Blue light coming on?

Does the computer make any kind of sound when the unit (power-on)
is plugged into the computer?

If so, can you see what the computer sees in the Device Manager.
Does it show up as a "Unknown Device", or some kind of USB device?

What do you see in the "FlexRadio" folder in the Device Manager?

What Operating System are you using?

--- Graham / KE9H

==



On Sat, Dec 25, 2010 at 1:15 PM, Martin Hertkorn wrote:

> Hello there,
>
> now i hav a problem, today afternoon suddenly i couldn't transmit anymore,
> then i found the serialnumber is lost and the firmware too, so powersdr
> 2.016 doesnt recognise anymore the harware.
>
> I couldn't anymore reload the firmware with the firmware loader, because it
> doesn't recognise anymor the serialnumber, any ideas what i could do,
> otherwise i have to send back to the dealer.
>
> By the way, Merry Chistmas and a Happy New Year 2011.
>
> Thanks for any support.
>
> 73 de Martin, DL6AN
>
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Re: [Flexradio] Questions about antennas and spectral displays...

[Graham Haddock]

David:

Well, there is the analog way,
and then there is the digital (signal processing) way.

--- Graham / KE9H

==

On Tue, Dec 21, 2010 at 12:49 PM, David McClain <
d...@refined-audiometrics.com> wrote:

> I think I know the answer, but I want to double check...  That 43 foot
> antenna... is it an end-fed random wire off the back of the tuner? or a
> center-fed dipole, with total span 43 feet?
>
> Also, as a side question... Anyone happen to know why all the other
> higher-end modern rigs (Icom, Kenwood, Yaesu, Ten-Tec), use swept spectrum
> analyzers instead of using an FFT like Flex Radio uses?
>
> - de Dave, N7AIG
>
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Re: [Flexradio] Two Simple Questions

[Graham Haddock]

The width of a panadaptor FFT bin in Hertz is your sampling rate divided by
4096.

In other words, your panadaptor display is a vertical bar graph display of
received
level for 4096 very narrow band receivers setting side by side by side ... .

So if you set your receiver bandwidth to the same bin bandwidth, then the
noise bandwidth and measured average noise level would be the same.

--- Graham



On Mon, Dec 13, 2010 at 2:18 PM, Carter Craigie wrote:

> Thanks, Brian!
>
> I shall try to follow your suggestion.
> Now if only I knew what "FFT bin in dBm" means. I know what the dBm part
> means...
>
> I am learning, and you are helping!
>
> Since you can't answer my second question, does that mean that YOU can see
> YOUR CW waveform? If so, I wonder what I need to set on my PowerSDR...
>
> 73,
>
> Carter
> N3AO
> Blacksburg, VA
>
> -Original Message-
> From: br...@lloyd.com [mailto:br...@lloyd.com] On Behalf Of Brian Lloyd
> Sent: Monday, December 13, 2010 3:07 PM
> To: carter...@verizon.net
> Cc: flexradio@flex-radio.biz; Kay Craigie N3KN
> Subject: Re: [Flexradio] Two Simple Questions
>
> On Mon, Dec 13, 2010 at 11:53 AM, Carter Craigie 
> wrote:
> > Question 1:
> > What does the scale of negative numbers on the left side of my
> > PowerSDR screen mean? For instance, on the scale at the moment at my
> > home here in Blacksburg, VA, on 60M Channel 2 the scale reading of the
> > noise floor is about -115. I am using the Panadapter, with AVG selected
> on
> my FLEX-1500.
> > What does that level mean?
>
> That is the average power per FFT bin in dBm. It is the same units as the
> S-meter which reads total average power in the receiver passband.
> The reason the power displayed on the panadaptor is so much lower than the
> S-meter is because the FFT bins are so much narrower in bandwidth
> (typically
> a few Hz) so there is much less noise power admitted. If you narrow down
> your receiver filter as much as possible then the S-meter reading and the
> panadaptor should read the same.
>
> Try this: tune in a carrier using a narrow filter so only the carrier is in
> the passband. The value of the peak on the pan display in dBm should be the
> same as the S-meter dBm reading.
>
> > Question 2:
> > When I transmit on SSB I see the waveform of my transmission on my
> screen.
> > But when I transmit on CW the screen does not show the waveform. Why
> > do I not see my CW waveform?
>
> Someone else is going to have to answer that one.
>
> --
> Brian Lloyd, WB6RQN/J79BPL
> 3191 Western Dr.
> Cameron Park, CA 95682
> br...@lloyd.com
> +1.767.617.1365 (Dominica)
> +1.931.492.6776 (USA)
> (+1.931.4.WB6RQN)
>
> 
>
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 10.0.1170 / Virus Database: 426/3313 - Release Date: 12/13/10
>
>
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Re: [Flexradio] flex 3000

[Graham Haddock]

Glenn:
That is not a lot of memory for Windows 7-64.  I think the guys like Neal
who
know a lot more about Windows 7 than me would recommend 4 Gig minimum and
preferably 8 Gig for Windows 7-64.  Apparently you end up with the computer
doing a lot of memory-disk swapping if it does not have access to enough
RAM.
--- Graham

==

On Sun, Dec 5, 2010 at 9:38 PM, Glenn Collins wrote:

> 3 gig of memory
>
>
> On Sun, Dec 5, 2010 at 9:36 PM, Graham Haddock wrote:
>
>> Glenn:
>> How much memory (RAM)?
>> --- Graham / KE9H
>>
>>
>>
>> On Sun, Dec 5, 2010 at 8:48 PM, Glenn Collins wrote:
>>
>>> I have a gigabyte computer running 3 gig dual core windows 7  64 bit
>>> computer my cpu % is high it says system interrupts under windows task
>>> manger is running about 25 to 35 cpu % i am not great on computers can
>>> any
>>> one tell me what this is i have all updated drivers for windows 7 home
>>> thanks for any help ae5nz Glenn
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>>
>>
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Re: [Flexradio] flex 3000

[Graham Haddock]

Glenn:
How much memory (RAM)?
--- Graham / KE9H



On Sun, Dec 5, 2010 at 8:48 PM, Glenn Collins wrote:

> I have a gigabyte computer running 3 gig dual core windows 7  64 bit
> computer my cpu % is high it says system interrupts under windows task
> manger is running about 25 to 35 cpu % i am not great on computers can any
> one tell me what this is i have all updated drivers for windows 7 home
> thanks for any help ae5nz Glenn
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Re: [Flexradio] crackling noise

[Graham Haddock]

Peter:
In addition to looking at the CPU loading in Task Manager, I also suggest
that
you download the tool named DPC Latency Checker   from

http://www.thesycon.de/dpclat

and run it.

The intermittent crackles caused by the CPU loading can usually be cured by
installing the ".dll" patch for 2.0.1.

If the intermittent crackles co-inside with DPC spikes, then you need to
figure
out what is causing that.  Likely some other peripheral that is tying up
your
kernel.

I would look at these things before buying a new computer.  [Unless you are
looking for an excuse for Santa to bring you an upgrade.]

--- Graham / KE9H

==


On Sun, Dec 5, 2010 at 3:09 PM, Peter - VE3HG  wrote:
>
>> Thanks to those who suggested the graphics card might be the suspect. Sure
>> enough swapped Windows 7 computers and no crackling.
>>
>> The 2.80 gig HP with a GeForce 8600 GT card and 4 gigs of memory was the
>> problem. A 3.33 gig E-Machine with a lesser ATI HD4350 card and only 2 gigs
>> of memory ran quiet - no crackling.
>>
>> However the 2 gigs RAM in the E-Machine don't seem sufficient for clean
>> CW. I'll try more RAM but it's looking more and more like a new computer :(
>>
>> Best regards,
>>
>> Peter - VE3HG
>> VE3HG Blog
>> Follow VE3HG On Twitter
>>
>>
>>
>>
>>
>>
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Re: [Flexradio] crackling noise

[Graham Haddock]

Peter:
In addition to looking at the CPU loading in Task Manager, I also suggest
that
you download the tool named DPC Check   from

xx

and run it.

The intermittent crackles caused by the CPU loading can usually be cured by
installing the ".dll" patch for 2.0.1.

If the intermittent crackles co-inside with DPC spikes, then you need to
figure
out what is causing that.  Likely some other peripheral that is tying up
your
kernel.

I would look at these things before buying a new computer.  [Unless you are
looking for an excuse for Santa to bring you an upgrade.]



On Sun, Dec 5, 2010 at 3:09 PM, Peter - VE3HG  wrote:

> Thanks to those who suggested the graphics card might be the suspect. Sure
> enough swapped Windows 7 computers and no crackling.
>
> The 2.80 gig HP with a GeForce 8600 GT card and 4 gigs of memory was the
> problem. A 3.33 gig E-Machine with a lesser ATI HD4350 card and only 2 gigs
> of memory ran quiet - no crackling.
>
> However the 2 gigs RAM in the E-Machine don't seem sufficient for clean CW.
> I'll try more RAM but it's looking more and more like a new computer :(
>
> Best regards,
>
> Peter - VE3HG
> VE3HG Blog
> Follow VE3HG On Twitter
>
>
>
>
>
>
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Re: [Flexradio] Tuning Accuracy for FMTs

[Graham Haddock]

As long as "SR" (Spur Reduction) is turned off, the DDS in all three
FlexRadios
is tuned using all 32 bits of frequency resolution.  The math and tuning
when SR is turned
on is totally different.

--- Graham



On Fri, Dec 3, 2010 at 9:25 AM, Brian Lloyd  wrote:

> On Thu, Dec 2, 2010 at 4:51 PM, John Stuart 
> wrote:
>
> > I plan to us my new Flex-1500 for the next ARRL FMT, but I have learned
> > that
> > VFO 'dial' on PSDR is not the exact frequency being tuned, i.e. the 1 Hz
> > resolution may be off by about + or - 0.355 Hz. I heard that this is
> > because
> > PSDR is only using 27 bits of the 32 bit DDS Frequency Tuning Word.
> >
> >
> >
> > If this is true, I don't understand why it was programmed that way.  The
> TI
> > AD9951 DDS chip accepts four 8-bit bytes (=32 bits) into its Frequency
> > Tuning Word, and sending 32 bits should be just as efficient as sending
> 27
> > bits.  I realize 1/3 Hz isn't important for most applications, but I'm
> > using
> > an external 10 MHz GPS Disciplined Oscillator, and I would like to be
> able
> > to 'guess' the FMT frequencies to within 1/3 Hz (Doppler permitting).
> >
>
> Welcome to the club. I have wondered the same thing and have been asking
> Flex about it for at least a year now. Their answer is that it is not the
> highest priority. As a result, I looked at the code that handles frequency
> determination with an eye toward improving it myself and discovered that it
> is somewhat 'nebulous', with bits and pieces scattered in several areas. At
> that point I figured I was far more likely to break something than fix it.
> And then there is the issue of how the firmware deals with frequency
> commands to the DDS LO so the problem is not localized to PowerSDR.
>
> There is one other thing to be aware of. PowerSDR has a second
> numerically-controlled oscillator in the PowerSDR software. It is the BFO
> for taking the IF to baseband. Since it introduces error as well, you need
> to operate at an IF of 0Hz in order to eliminate that. That makes the
> frequencies right near the LO injection frequency unavailable. If one is
> doing frequency measurement at some audio frequency that is not a problem
> but it does preclude using the phase measurement at 0Hz as a frequency
> measurement tool.
>
> In lieu of FlexRadio releasing the full accuracy of this great little radio
> > with the next PSDR and/or Flex1500 Driver update, I am wondering if it is
> > possible to post-calculate the 'dial' error for any given frequency so
> that
> > FMTer's could correct their guesses / measurements?
> >
>
> That should be possible. If you go to the Analog Devices web site and look
> up the DDS chip, they offer an on-line calculator that, given the reference
> clock input, calculates the nearest frequency control word value and then
> displays the difference between that and the desired frequency. Just for
> grins I plotted the desired frequency plus-or-minus the DDS programming
> error thinking that I should get a zero value. I didn't. I got a periodic
> error which supports your supposition that Flex is not using the entire
> FCW,
> at least in the 5000. I have not done this for the 1500 (yet). Looks like
> you have done this already.
>
>
> > Today I did create an Excel spreadsheet that gave me some reasonable
> > answers, but I had to make a lot of assumptions about how PSDR and the
> > Flex-1500 work.  I assumed the DDS is clocked at 384 MHz, the Frequency
> > Tuning Word's 5 LSBits are always 0, the DDS needs to supply 4x the
> desired
> > Rx frequency to the QSD, and the Clock Offset value, and the CW Pitch
> Freq
> > have to be considered. I couldn't even guess how an external 10 MHz
> > reference signal can substitute for the built-in 38.4 MHz tuning
> oscillator
> > (unless the DDS clocking is shifted to 10 MHz x 2 x 19 = 380 MHz, and the
> > Frequency Tuning Word calculation is shifted to account).
> >
>
> Well, I see Graham has answered your question about the clock frequency for
> the AD9951 DDS. I see he also commented on Spur Reduction. That is
> important
> to ensure that the errors are all localized to the DDS and not to the NCO
> in
> software that is used to mix IF to baseband. Of course, you need to set the
> IF frequency to zero as well.
>
> Try going to the AD website and plugging everything in and looking at the
> error. If I can determine the programmed-error for any give frequency then
> it becomes possible to easily cancel that error when doing the FMT.
>
>
> > What I found was that the true tuning frequency varies in a 5 step
> > saw-tooth
> > like fashion, and can be from +0.357 Hz higher to -0.353 Hz lower than
> the
> > 1
> > Hz resolution VFO 'dial' indicates.
> >
>
> Yeah. I haven't tried to categorize the 1500. The error is approximately
> +/-
> 130mHz in the 5000, which I did try to categorize.
>
> One more thing to think about -- there could be an error introduced in the
> firmware due to truncation when calculating the frequency control word. It
>

Re: [Flexradio] Tuning Accuracy for FMTs

[Graham Haddock]

1.) You should turn off Spur Reduction (SR) and run your tests again.
That way, Flex will not have to do an emergency driver update.

2.) When running off the External 10 MHz input, the DDS sampling frequency
is 400 MHz. (10 x 2 x 20)

--- Graham / KE9H


On Thu, Dec 2, 2010 at 6:51 PM, John Stuart  wrote:

> I plan to us my new Flex-1500 for the next ARRL FMT, but I have learned
> that
> VFO 'dial' on PSDR is not the exact frequency being tuned, i.e. the 1 Hz
> resolution may be off by about + or - 0.355 Hz. I heard that this is
> because
> PSDR is only using 27 bits of the 32 bit DDS Frequency Tuning Word.
>
>
>
> If this is true, I don't understand why it was programmed that way.  The TI
> AD9951 DDS chip accepts four 8-bit bytes (=32 bits) into its Frequency
> Tuning Word, and sending 32 bits should be just as efficient as sending 27
> bits.  I realize 1/3 Hz isn't important for most applications, but I'm
> using
> an external 10 MHz GPS Disciplined Oscillator, and I would like to be able
> to 'guess' the FMT frequencies to within 1/3 Hz (Doppler permitting).
>
>
>
> In lieu of FlexRadio releasing the full accuracy of this great little radio
> with the next PSDR and/or Flex1500 Driver update, I am wondering if it is
> possible to post-calculate the 'dial' error for any given frequency so that
> FMTer's could correct their guesses / measurements?
>
>
>
> Today I did create an Excel spreadsheet that gave me some reasonable
> answers, but I had to make a lot of assumptions about how PSDR and the
> Flex-1500 work.  I assumed the DDS is clocked at 384 MHz, the Frequency
> Tuning Word's 5 LSBits are always 0, the DDS needs to supply 4x the desired
> Rx frequency to the QSD, and the Clock Offset value, and the CW Pitch Freq
> have to be considered. I couldn't even guess how an external 10 MHz
> reference signal can substitute for the built-in 38.4 MHz tuning oscillator
> (unless the DDS clocking is shifted to 10 MHz x 2 x 19 = 380 MHz, and the
> Frequency Tuning Word calculation is shifted to account).
>
>
>
> What I found was that the true tuning frequency varies in a 5 step
> saw-tooth
> like fashion, and can be from +0.357 Hz higher to -0.353 Hz lower than the
> 1
> Hz resolution VFO 'dial' indicates.
>
>
>
>
>
> John Stuart, KM6QX
>
>
>
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Re: [Flexradio] 1500 noise

[Graham Haddock]

Dale:

I suspect all that will go away if you upgrade to 2.0.16.
Sometimes an aggressive sound card driver in your computer system
will try to take over the 1500, because it looks like a soundcard.  That is
no longer true in 2.0.16 and anything after.

--- Graham

==

On Mon, Nov 29, 2010 at 9:52 AM,  wrote:

>
>  When I shut down my 1500 system ,which is, click the "on: button on power
> sdr, click the button in the upper right corner of the screento shut down
> power sdr. turn off power to the 1500,then shut down  the windows xp and the
> computer. As soon as I remove power from the 1500.I get a load squeal sound
> from the speakers until I shut the power supply of that feed the 1500. Any
> one else have this happen? Is it a problem with anything ,or just one of
> those things that happens. Iam using 2.08 with the 1500.
> just curious
> thanks
> dale wt4t
>
>
>
>
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Re: [Flexradio] QRM filter techniques

[Graham Haddock]

John:

If they are coming from different directions, then you can use the second
receiver
as in Flex-5000 option (on a separate antenna) to create spacial diversity,
or even
rotate a directional notch onto the interferer.  These directional notches
are quite
narrow in angle, but can be many tens of dB deep.

In a single antenna, single receiver system, the list of things you mention
are pretty much your options.  Once the signals are mixed together in a
single pass band, and they are the same kind of signal, then there is no
easy way for the DSP to tell the desired from the undesired, anymore.

--- Graham / KE9H

==


On Sun, Nov 21, 2010 at 4:17 PM, John Bair, KJ7B  wrote:

> Let's say we are tuned and listening to a USB transmission, and there is
> another USB transmission 1-2 kc lower on the band, such that the two
> transmissions overlap. Other than sliding or shrinking the passband,
> turning
> off preamp or lowering AGC gain to try to reduce the QRM to noise level,
> what additional techniques can we use to de-emphasize the adjacent SSB
> signal in PowerSDR today?
>
> Looking forward to new DSP development, what are the possibilities to use
> DSP to subtract the QRM, if we know that it is an SSB signal? What if the
> QRM is not SSB but say, RTTY or other mode signal (band conventions are
> supposed to prevent this but it happens), could DSP subtract the QRM?
>
> 73, John KJ7B
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Re: [Flexradio] Hotfix

[Graham Haddock]

Disregard. You are trying to put in an XP patch,so obviously running XP.
Duh.
--- Graham

==

On Tue, Nov 16, 2010 at 4:41 PM, Graham Haddock wrote:

> Are you running Vista or Windows 7?
> Are you right clicking and "Run as an administrator" for the install?
> --- Graham
>
>
>
> On Tue, Nov 16, 2010 at 4:38 PM, Kevin Hobbs  wrote:
>
>> Thanks
>>
>>
>>
>> I got it … uses the fresh password … and got access denied.
>>
>> I did the whole thing again … got a new password … same problem.
>>
>>
>>
>>
>>
>> *From:* gra...@flex-radio.com [mailto:gra...@flex-radio.com] *On Behalf
>> Of *Graham Haddock
>> *Sent:* November-16-10 5:36 PM
>> *To:* Kevin Hobbs
>> *Cc:* flexradio@flex-radio.biz
>> *Subject:* Re: [Flexradio] Hotfix
>>
>>
>>
>> Kevin:
>>
>> Did you use an old password, or a fresh one issued to you by Microsoft in
>> the same
>> week as the download?   Microsoft keeps rolling the passwords, so as able
>> to keep count and know who is using / needing the patch.  They use this as
>> some
>> kind of marketing input to determine if the demand requires it to be added
>> to a future
>> release.
>>
>> So I suggest you apply directly to Microsoft for a new download and
>> password, and
>> try again.
>>
>> --- Graham
>>
>> --
>>
>> On Tue, Nov 16, 2010 at 4:25 PM, Kevin Hobbs  wrote:
>>
>> Hi
>>
>>
>>
>> I just got my 5000 with VU upgrade back today.
>>
>>
>>
>> I downloaded the 1394 speed hotfix for XP SP3 . when I try to run it says
>> "access denied" . I put the password in 2 unzip as prescribed. Been
>> through
>> the complete loop 2 times. Any suggestions?
>>
>>
>>
>> KH
>>
>>
>>
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>>
>>
>>
>
>
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Re: [Flexradio] Hotfix

[Graham Haddock]

Are you running Vista or Windows 7?
Are you right clicking and "Run as an administrator" for the install?
--- Graham


On Tue, Nov 16, 2010 at 4:38 PM, Kevin Hobbs  wrote:

> Thanks
>
>
>
> I got it … uses the fresh password … and got access denied.
>
> I did the whole thing again … got a new password … same problem.
>
>
>
>
>
> *From:* gra...@flex-radio.com [mailto:gra...@flex-radio.com] *On Behalf Of
> *Graham Haddock
> *Sent:* November-16-10 5:36 PM
> *To:* Kevin Hobbs
> *Cc:* flexradio@flex-radio.biz
> *Subject:* Re: [Flexradio] Hotfix
>
>
>
> Kevin:
>
> Did you use an old password, or a fresh one issued to you by Microsoft in
> the same
> week as the download?   Microsoft keeps rolling the passwords, so as able
> to keep count and know who is using / needing the patch.  They use this as
> some
> kind of marketing input to determine if the demand requires it to be added
> to a future
> release.
>
> So I suggest you apply directly to Microsoft for a new download and
> password, and
> try again.
>
> --- Graham
>
> --
>
> On Tue, Nov 16, 2010 at 4:25 PM, Kevin Hobbs  wrote:
>
> Hi
>
>
>
> I just got my 5000 with VU upgrade back today.
>
>
>
> I downloaded the 1394 speed hotfix for XP SP3 . when I try to run it says
> "access denied" . I put the password in 2 unzip as prescribed. Been through
> the complete loop 2 times. Any suggestions?
>
>
>
> KH
>
>
>
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>
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Re: [Flexradio] Hotfix

[Graham Haddock]

Kevin:

Did you use an old password, or a fresh one issued to you by Microsoft in
the same
week as the download?   Microsoft keeps rolling the passwords, so as able
to keep count and know who is using / needing the patch.  They use this as
some
kind of marketing input to determine if the demand requires it to be added
to a future
release.

So I suggest you apply directly to Microsoft for a new download and
password, and
try again.

--- Graham

--

On Tue, Nov 16, 2010 at 4:25 PM, Kevin Hobbs  wrote:

> Hi
>
>
>
> I just got my 5000 with VU upgrade back today.
>
>
>
> I downloaded the 1394 speed hotfix for XP SP3 . when I try to run it says
> "access denied" . I put the password in 2 unzip as prescribed. Been through
> the complete loop 2 times. Any suggestions?
>
>
>
> KH
>
>
>
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Re: [Flexradio] No power out on Flex-1500

[Graham Haddock]

Fred:

I doubt that you did anything wrong to hurt the radio, or that the upgrade
to 2.0.16 caused it either.
Please call/email Dudley on Monday to get an RMA.
Sounds like a failed relay in the 20/30 Meter filter.
We will turn it quickly for you.

--- Graham /KE9H

==

On Sun, Nov 14, 2010 at 9:10 PM, Fred Spinner  wrote:

> Possible.. no matter what it has to go back.  I just thought the timing of
> the symptoms to bit a bit too coincidental.  I went from working TX (but
> with too many audio dropouts on the two machines I was able to try it on)
> with 2.0.8 to not putting output on ANY band in 2.0.16 to working on all
> bands except 20m/30m in 2.0.8 to then doing the same on 2.0.16.  Timing was
> very suspicious but anything is possible.  Maybe it took out a relay?  Maybe
> it's all coincidence  It's possible I guess..  I've been having that sort of
> luck lately...
>
> I just got back home from my mother-in-law passing away and have a week of
> work to make up at work.. also discovered that my rotor doesn't like the
> cold.  It works.. eventually..  been that sort of day/week already.
>
> I'll call flex tomorrow during the day and try to get it off to them on
> Tuesday.  Bummer...
>
> Really three and a half months waiting to get this thing working well for
> me is starting to seriously get on the nerves.  But I think with 2.0.16 Flex
> is finally at the level they should of been at when delivering these units
> in stability and usability.  Except for the dead TX band, the rig works the
> way I thought it would, finally, when I bought it.  I really wanted to make
> a few 20m PSK Q's with it today though... :O(  I suppose I could do a 40m Q
> but it's getting late...
>
> Fred W0FMS
>
>
> Nov 14, 2010 08:54:53 PM, br...@lloyd.com wrote:
>
> ===
>
> On Sun, Nov 14, 2010 at 6:51 PM, Fred Spinner  wrote:
>  I on my own reloaded 2.0.16 and now notice the same symptoms-- works
> except on 20m/30m.  Previous to the downgrade/upgrade I was getting no power
> out on all bands.. now just 20m/30m isn't working.  I theorize that somehow
> the TX filters weren't getting properly switched and when I tried 80m/40m,
> 6m etc.. it was transmitting through the 20m filter and damaged it (opened
> up a cap or coil in the filter).
>
> Sounds like a bad relay switching the bandpass filter. The 5W PA is not
> going to burn out a bandpass filter. It just won't be able to deliver power
> into it. That the radio produces power on all the other bands says that the
> PA is fine but that the 20m/30m bandpass filter is not being switched in.
> Like I said, sounds like a bad relay.
> Sounds like it needs a trip home.
> --
> Brian Lloyd, WB6RQN/J79BPL
> 3191 Western Dr.
> Cameron Park, CA 95682
> br...@lloyd.com
> +1.767.617.1365 (Dominica)
> +1.931.492.6776 (USA)
> (+1.931.4.WB6RQN)
>
>
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Re: [Flexradio] The Ultimate Low-Band DXer RF Presel ection Filter: YAESU’s Exclusive µ-Tuning

[Graham Haddock]

I think FlexRadio's answer to all this is the "brick wall" filters you
already have
(at no additional charge, by the way) built into PowerSDR.  Turn up the
DSP buffer and audio sample buffers to maximum, and there is no
filter implemented with electrical components that can touch them,
(at least none that you could afford.)

[And they are adjustable and movable, without having to use stepper motors.]

--- Graham / KE9H

==


On Tue, Nov 2, 2010 at 8:16 AM, William H. Fite  wrote:

> Edwin,
>
> I have a couple of them that I use with my FT950.  They are effective but
> no
> more effective, IMO, than I can be with the 5K by managing the AGC and
> tweaking the filters.
>
> I got mine with the radio but, having used them a fair bit, I wouldn't pay
> the asking price.  That being said, there are people who think they're the
> best thing since sliced bread so your mileage may vary.
>
> On Tue, Nov 2, 2010 at 12:08 AM, Edwin Marzan  >wrote:
>
> >
> > I heard a Yaesu FT5000 owner talking about the effectiveness of these
> > µ-Tuning units.  Does the Flex family of radios have anything that rivals
> > this technology?
> >
> > http://www.eham.net/reviews/detail/7949
> >
> > Just curious...
> >
> > Edwin Marzan AB2VW
> >
> >
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> >
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Re: [Flexradio] Panadapter horizontal scaling

[Graham Haddock]

Rich:

I assume you use the "Zoom" control, just under the panadaptor screen.
Then you can use the "Center" control next to it.

Maximum panadaptor span is approximately equal to the sampling rate, 49, 96,
or 192 kHz on your radio.
It is slightly wider with SR (Spur Reduction) turned off.

You can also reduce the IF frequency (in SetUp/Expert Mode) to something
like
3000 Hz to move the receive carrier position to closer to the mathematical
center
of the panadaptor screen.

--- Graham

==

On Sat, Oct 23, 2010 at 11:17 AM, Tim Ellison  wrote:

> Setting the sampling rate to 192K will provide the widest Panadapter view.
>
>
>
> -Tim
>
>
> -Original Message-
> From: flexradio-boun...@flex-radio.biz [mailto:
> flexradio-boun...@flex-radio.biz] On Behalf Of rich kennedy
> Sent: Saturday, October 23, 2010 12:09 PM
> To: flexradio@flex-radio.biz
> Subject: [Flexradio] Panadapter horizontal scaling
>
> Flex'ers,
>
> Rig=Flex5K; PSDR=1.18; latest drivers and firmware.
>
> Question: I wish to change the horizontal scaling of the panadapter so more
> bandwidth is seen.  Even at the widest (0.5) display setting I can't see the
> target frequencies that I wish to view.  In "setup; display" you can change
> vertical scaling, but I don't see where you can change horizontal scaling.
>  Additionally, sometimes the signal I'm receiving (C91DL for example) is
> working split up 10 and I want to see the signals that are 8 to 12 up, but
> they're off the screen!
>
> 73, Rich, K3VAT
>
>
>
>
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Re: [Flexradio] Audio drop outs

[Graham Haddock]

Peter:

Did by any chance, you just download (allow to be downloaded)  yesterday's
Windows Update?
It included October's scan for malicious software, which will use a good
part
of your CPU for a little while.

You can look in the task Manager (control-alt-delete) and be sure to check
"show processes from all users" at the bottom of the processes page, and see
what is running.

--- Graham / KE9H



On Fri, Oct 15, 2010 at 10:33 AM, Peter - VE3HG  wrote:

> I'm reading everything I can find but haven't found an answer yet to audio
> dropping out every few seconds. Must be something in Windows 7 that's
> running in the background? Any thoughts appreciated.
>
> Running Flex 1500, Windows 7, HP PC. Didn't have this issue yesterday!
>
> Best regards,
>
> Peter - VE3HG
> VE3HG Blog
> Follow VE3HG On Twitter
>
>
>
>
>
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Re: [Flexradio] Skype AUDIO DELAY and PowerSDR DSP / Buffer Size drawback

[Graham Haddock]

>Again, as a recap:  I am predictably able to decrease my audio
> delay-time by changing the "PowerSDR > DSP > Options > Buffer size > Phone"
> from the default to some lower value. -But, if i leave the setting at a 512
> or 256 as an example, my transmitted signal is no longer SSB, but a sort of
> DSB. My CW note (in TUNE mode) is no linger a single tone.  (See my original
> email for a more complete coverage of the details.)
>
>Why is it that my transmitted SSB signal is getting messy, with me
> emitting what seems like a DSB signal, when I change the PowerSDR > DSP >
> Options > Buffer size > Phone from 2048 to 512 or 256???  -Keep in mind that
> this is on two computers, running a Flex-3000 and a Flex-5000a.
>
>73; -Mike- KØJTA
>
>
Mike:

As a simple explanation, the smaller the buffers are, then the faster
(attention is required more often)
the computer must be to circle back to the buffer and re-fill it.  Depending
on the computer, there may be a
large overhead in the CPU switching from one task to another. If the buffers
are set too small,
then the data going into the buffers gets corrupted, because the computer
can not get back
in time, and is missing part of the re-fill.  Missing data in an I-Q system
destroys image cancellation
and opposite sideband suppression, etc.

It is not just about computer clock speed, it is also about the size of the
caches, and the
efficiency at which the computer can do context or thread switching.

I have had a recent learning experience that a Pentium D, for example,
although multi-core and
a fast processor speed, particularly sucks at thread switching.

If setting the buffers at a particular small size causes problems, then you
are being told something
about your computer system, and you should not set the buffers that small.

--- Graham / KE9H

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Re: [Flexradio] OT: Upgrading to Win7?

[Graham Haddock]

Neal:

I understand and agree with your recommendation.

But, I also note that most new computers (Dell, Gateway, HP/Compaq) with
Windows 7 factory installed are coming only with 64 bit version.

Is Microsoft pushing 64 bit? If so, why?

Thanks,
--- Graham

==

On Thu, Sep 16, 2010 at 9:57 AM, Neal Campbell  wrote:

> Hi All
>
> The issue of using the full 4GB of memory in selecting 64 bit versus 32 bit
> isn't so straightforward. Most systems (i.e. bios) will reserve memory for
> devices, etc. On the system I just assembled for a customer, there were
> enough devices installed that it took an entire GB of capacity so the
> operating system only had 3GB to see (which is below the maximum 3.2GB
> visible anyway). Besides, you will never see the difference between 4GB and
> 3.2GB in operation. I can also say that Win7 x64 seems slower on a 4GB
> system than a Win7x86 system does with 3.2GB.
>
> I have seen some real weirdness with vendors supporting Win7 and especially
> Win7x64. Weird in that they are not actively developing drivers for their
> current product line even though WinXP is dead! Things like printers (as
> mentioned before), scanners, webcams, etc.
>
> I still recommend 32 bit Win7, its just an easier transition.
>
> 73
> Neal Campbell
> Abroham Neal Software
> www.abrohamnealsoftware.com
> (540) 645 5394
>
>
>
>
>
>
> On Thu, Sep 16, 2010 at 10:51 AM, Tim N9PUZ  wrote:
>
> > Another item to check is your printer. When I built my one Windows 7
> 32-bit
> > machine I found that my older Lexmark ink jet was not supported. You may
> > find that a printer upgrade is required as well.
> >
> > 73,
> >
> > Tim N9PUZ
> >
> >
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Re: [Flexradio] PowerSDR 2.08 problems found ---

[Graham Haddock]

Jim:

Yes, Power out is only reported now on a percentage value.
The unit is calibrated at 5.0 Watts = 100 percent.

On 60 Meters, the FCC only allows SSB transmission.
Please check and see if it puts out power on SSB.  It should.

--- Graham

==

On Wed, Sep 8, 2010 at 1:21 PM, n8luv...@juno.com  wrote:

> Hello all:
>
> I've owned my Flex-1500 now for 3 weeks. The CD install was PwrSDR version
> 2.05. All has gone well even though my OS is Vista! - I decided to install
> version 2.08. The very 1st items of concern I have discovered are:
>
> 1. the xmit power out mtr on 2.05 showed watts out. The new 2.08 shows %
> out. I have not found a way to display watts out on 2.08 as yet.
>
> 2. 60mtrs worked like a champ on 2.05. When I transmit on 60mtrs using
> 2.08, the display shows a signal and the % power out indicates 100%.
> However, the outboard auto-tuner (Z-11) shows no indication of power out on
> this band! I went back to 40 as well as 80 and had a true power out of 5
> watts. I went back to version 2.05 and 60mtrs does have actual power out
> showing on the tuner! - Hmmm??? 60 mtrs apparently is not working on
> version 2.08!
>
> Jim - N8LUV
>
>
> 
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Re: [Flexradio] Drifting noise hills

[Graham Haddock]

Mike:

That is the "signature" of a switching power supply.

Your WiFi router?  Other "wall warts" ?
Your desktop computer.
Any laptop computer power supplies.

--- Graham

==


On Wed, Sep 8, 2010 at 9:40 AM, Mike WA8BXN  wrote:

> I have noticed at times (particularly during fox hunts) what I can best
> describe as a noise hill that usually drifts around in frequency. For a
> width of several KHzon the panadapter I see what is shaped like a "normal
> curve" that trails off for many more KHz. In panfall mode I can see a
> brightening where the curve in the panadapter display.
>
>
>
> Sometimes, when the peak of the curve is in the passband of the receiver I
> can hear a shift in the noise frequency at around a second or two intervals
> as the peak drifts around.
>
>
>
> I have observed this with both a 1000 and 1500 flex radios. Disconnecting
> the antenna gives a flat display. Connecting a wire to the antenna several
> feet long just in the shack does not show the noise hill, so it doesn't
> look
> like its something in the shack.
>
>
>
> The effect happens with a number of antennas and is not consistent at all.
> I
> live in a rural area with other houses hundreds of yards away.
>
>
>
> Has anyone else observed this sort of thing or have any idea what it might
> be?
>
>
>
> Thanks in advance!
>
>
>
> 73 - Mike WA8BXN
>
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Re: [Flexradio] Flex-1500 external equipment sequencing issue...

[Graham Haddock]

John:

This has been assigned software tracking item D317 and it will be fixed
before
PowerSDR 2.0 goes to official release.

--- Graham

==

On Tue, Sep 7, 2010 at 7:35 AM, Tim Ellison  wrote:

> The FLEX-1500 is missing the control to set the time delay of RF after PTT.
>  This defect has been entered into the developers bug tracker and the
> software engineers notified of it.
>
>
> -Tim
>
>
> -Original Message-
> From: flexradio-boun...@flex-radio.biz [mailto:
> flexradio-boun...@flex-radio.biz] On Behalf Of John Maetta
> Sent: Tuesday, September 07, 2010 5:16 AM
> To: 'FlexRadio Group'
> Subject: [Flexradio] Flex-1500 external equipment sequencing issue...
>
> Gentlemen,
>
> My plans were to use the Flex-1500 for digital, CW and SSB EME (moonbounce)
> and replace my TS-790 with transverters.
> My current configuration is WSJT, VAC, Serial Port Manager and PowerSDR
> 2.0.8. This combination seems to work well together and it was time to
> interface the Flex-1500 and PowerSDR to my EME equipment.
>
> But, after several attempts to reliably interface the Flex-1500 with my
> sequencer to control my mast mounted preamp, driver amp and power amp, I
> have determined the following:
>
> When WSJT transmits, the PowerSDR and the Flex outputs Flexwire PTT out and
> RF immediately, as verified by a watt meter. The Flexwire PTT is asserted
> to
> late to start any sequencer and will cause the RF to destroy the preamp or
> amplifier relays by 'hot keying'.
> Also, the Flex-1500 can not be keyed by the last event in the sequence.
> Applying a PTT from the sequencer to either the MIC jack or the Flexwire
> PTT
> In jack will key the Flex-1500, but not key PowerSDR and transmit.
>
> So bottom line, we need to have two programmable delays.
> 1) PowerSDR TX delayed from PTT inputs (CAT, flexwire HW PTT and mic PTT)
> and...
> 2) PTT Flexwire output delayed from PTT inputs. Then we can get to a
> minimum
> configuration for VHF/UHF use.
>
> Come on Flex, help us transverter operators out.  Give us that delay
> between
> Flexwire PTT and PowerSDR, whether PTT is initiated from MIC, Flexwire PTT
> In or digital mode.  Sequencing external equipment is a basic operating
> procedure that VHF/microwave enthusiasts employ.  Right now, the Flex-1500
> doesn't seem to deliver that operability for a radio that was advertised as
> " The FLEX-1500 comes packed with features that make it ideally positioned
> to be the ultimate low cost, high performance IF deck for VHF-microwave
> transverter operation. "  True, if you use just the Flex1500 with a low
> power transveter and don't have expensive external equipment such as a
> preamp, drivers and power amps.
>
> If any of you Flex-1500 users have reliably conquered this problem, post up
> your method(s).
>
> 73,
>
> John N6VMO
>
>
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Re: [Flexradio] More computer questions--mouse, trackball, etc ??

[Graham Haddock]

One "beware" on the trackballs.  They are usually USB devices, and to speed
up the response time, some manufacturers are calling the device extremely
frequently, which can chew up the USB bandwidth, and generate a lot of
commotion.  I love my Kensington four button trackball, but you can pay a
price
in USB performance on other real time USB devices, like a FLEX-1500 or
HPSDR.
--- Graham

==

On Thu, Aug 19, 2010 at 9:05 AM, Alan NV8A  wrote:

> On 08/19/10 08:59 am, Dan & Jean wrote:
>
>  Thanks to all of you who shared your experience with multitasking while
>> using the 5000A.  Your comments were VERY helpful.
>>
>>
>> Now I have a few more questions.
>>
>> I've been using a hardwired Microsoft trackball for years.   I really
>> don't
>> know if another device would be any more useful in operating the 5000A.
>>
>> 1)  Have any of you developed a preference for any particular pointing
>> device--especially with regard to interfacing with the 5000A software?
>>
>> 2)  Are any of you using wireless trackballs and keyboards with your
>> computer (in the RF environment)?  Does running a legal limit amplifier in
>> the vicinity affect their operation?
>>
>> Any comments with regard to your experience or observations would be
>> appreciated.  If you have favorable or unfavorable experiences with a
>> particular device, please mention the brand and model if possible.
>>
>
> I like my Logitech Cordless Optical Trackman (T-RB22). I think the last
> place I saw one in a store was at CompUSA just before all the stores closed,
> but I'm pretty sure they're still available online.
>
> 73
>
> Alan NV8A
>
>
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Re: [Flexradio] Ref Flex 1500 adding Amp

[Graham Haddock]

If the reference is to the amount of +12 Volt power you can pull from
the FlexWire connector on the back of the radio.  Up to 250 mA is not a
problem.

If you are driving a relay with the FlexWire PTT Out pin, be sure to
put an inductive "kick" suppression diode across the relay.

--- Graham / KE9H


On Mon, Aug 9, 2010 at 5:46 PM, hank k8dd  wrote:

> The knowledge base article says the Flex radios "can only take on a limited
> amount of current."
>
> How much is too much? Or what is the limit? 5ma - 10ma - 50ma?
>
> 73HankK8DD
>
> - Original Message - From: "Tim Ellison" 
> To: "Rick Tharrington" ; 
> Sent: Sunday, August 08, 2010 9:23 PM
> Subject: Re: [Flexradio] Ref Flex 1500 adding Amp
>
>
>
>  I recommend using an isolation relay or an equivalent for all amp-to-radio
>> PTT interfaces just to make sure you don't damage the radio.
>> http://kc.flex-radio.com/KnowledgebaseArticle50313.aspx
>>
>> -Tim
>>
>>
>> -Original Message-
>> From: flexradio-boun...@flex-radio.biz [mailto:
>> flexradio-boun...@flex-radio.biz] On Behalf Of Rick Tharrington
>> Sent: Sunday, August 08, 2010 9:18 PM
>> To: flexradio@flex-radio.biz
>> Subject: [Flexradio] Ref Flex 1500 adding Amp
>> Importance: High
>>
>>
>>
>> I'm going to buy the Tokyo High Power amp model HL-45B this week. Now will
>> I
>> need a buffer box Like the ERB-1 below? I have all ready made  up a cable
>> for the Flex Wire port. I understand the two pin outs to key a amp are 5
>> and
>> 4. Now can I use those leads direct to the HL-45B or key thru a buffer?
>> Any
>> comments or thoughts from the group?
>>
>> Rick KD4JRX
>>
>>
>>
>>
>>
>> ERB-1 External Linear Relay Box
>>
>>
>>   The ERB-1 is an External Linear Relay Box designed to be an interface
>> between your HF Radio and Linear Amplifier. The ERB-1 uses RCA Phono jacks
>> so it can be connected to many popular radios by simply using RCA to RCA
>> cables.
>>
>>   It also can be used for any other switching applications you may have.
>> Refer to specifications.
>>
>> Compatibility
>>   When properly connected the ERB-1 will work with virtually any Linear or
>> Radio combination. For some Radio and Linears,  two RCA to RCA cables(Sold
>> Seperately) are all that is needed.
>>
>> It is also QSK compatible.
>>
>> Power
>>   It can be powered by an optional 9 volt battery or power cube.
>>
>> Why do I need a Relay buffer between my Amplifier and Radio?
>>When connecting different brands of Radios and Amplifiers, there may be
>> switching voltage,polarity, and current capability issues that can cause
>> damage to your radio or amplifier if connected without a switching buffer
>> between them. Even if your internal radio switching looks like it should
>> be
>> usable, it is alway nice to have an extra degree of isolation between your
>> amplifier and radio.
>>
>> Reliability
>>   All inputs an outputs are protected making the ERB-1 extremely Rugged
>> and Reliable.
>>
>> Specifications:
>> PTT INPUT CURRENT: 8MA SINK CURRENT
>> VCC IN: 5 TO 18...@10ma
>> RELAY OUT: 2...@250ma MAX
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> Ricky R Tharrington
>>
>> NCSPA
>>
>> ILM Skywarn EC
>>
>> NC Army Mars
>>
>>
>>
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>>
>
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Re: [Flexradio] what version of power sdr to setup.

[Graham Haddock]

Tim is correct.

You can set it up and get running under 2.0.7 with the factory
installed driver 0.4.1.2.  When you are comfortable, you can upgrade
to 0.4.1.4 to get the sidetone volume control running. No other
impact or need for firmware upgrade at this time.

--- Graham


On Tue, Aug 3, 2010 at 1:30 PM, Tim Ellison  wrote:

> PowerSDR v2.0.7 was just announced on the FlexEdge reflector.  I'd use that
> one.
>
> Read the release notes for info regarding firmware updates.
>
> Release Notes:
> http://support.flex-radio.com/Downloads.aspx?id=347
>
> PowerSDR v2.0.7 Suite Beta Installer:
> http://support.flex-radio.com/Downloads.aspx?id=346
>
> -Tim
>
>
> -Original Message-
> From: flexradio-boun...@flex-radio.biz [mailto:
> flexradio-boun...@flex-radio.biz] On Behalf Of y...@aol.com
> Sent: Tuesday, August 03, 2010 2:13 PM
> To: FlexRadio@flex-radio.biz
> Subject: [Flexradio] what version of power sdr to setup.
>
>
> I plan to set up my new 1500 this afternoon. What would be the recommended
> version of power sdr to use? My 1500 was shipped last thursday, is the
> firmware in my 1500 ok with all the latest  versions of beta 2., the
> last 2.07 is a one shot package ,download it and run it?? or is there
> something else to do? a second program...installer??
>  thanks
> dale wt4t
>
>
>
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Re: [Flexradio] setup for the 1500

[Graham Haddock]

I recommend loading 2.0.6 from the installer you download from the
website.

The radio will ship with firmware 0.4.1.2 installed.

This firmware will work fine with 2.0.6, except for one item.

If you want the transmit sidetone/monitor volume control to work, then
you will need to upgrade to radio firmware 0.4.1.4.   The updater is
in the appropriate driver folder in

C:/Program Files/FLEX Radio Systems/PowerSDR 2.0.6

--- Graham / KE9H

==



On Thu, Jul 29, 2010 at 3:54 PM, Mike WA8BXN  wrote:

> Having no CD drive on the netbook I first tried using, I dowloaded from the
> flex website. Its a complete install. I followed the instructions on the
> errata sheet for XP.
>
>
>
> 73 - Mike WA8BXN
>
>
>
>
>
>
>
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Re: [Flexradio] quick questions about the 1500

[Graham Haddock]

The output transistor in the FLEX-1500 is a highly derated transistor,
so foldback is not needed for protection.  You can set it on 100 (5 Watts)
and tell the tuner to tune.

Most of the tuning power restrictions are more to protect the relays in
the tuner from "hot switching."  This is not an issue at 5 Watts.

--- Graham

==

On Wed, Jul 28, 2010 at 12:49 PM,  wrote:

>
> At what swr will the 1500 start to fold back its output, or is it not
> designed that way. In power sdr you can set the tune wattage at say 10
> watts, like on the 5000,on the 1500 are the limits like 0 to 5 watts if you
> hit the tune button to activate a outboard tuner?
>  thanks
> dale wt4t
>
>
>
>
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Re: [Flexradio] Flex-1500 antenna problem

[Graham Haddock]

Well, for hardware, check where your ANT menu says the radio is expecting
the antenna.


More likely, you are telling PowerSDR to listen to the wrong A->D converter.

With regard to software, check under SetUp/Audio that you have selected
the FLEX-1500 for the input and output.   Or...

If you are using ASIO4ALL, check in ASIO4ALL Offline that you have selected
the FLEX-1500 as the target for ASIO4ALL.

--- Graham / KE9H

==

On Sun, Jul 25, 2010 at 6:03 AM, Douglas R. Pinson
wrote:

> No problem in setting up the Flex 1500--everything went smoothly.  But, the
> radio acts as if there were no antenna connected.  I've re-checked the
> settings in the start-up guide, and I've tried different PL259/BNC adapters.
>  Any suggestions?  Thanks!
>
>
>Doug
>
>
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Re: [Flexradio] Acer Aspire One with Flex 1500

[Graham Haddock]

If you have the garbling tone on receive or transmit, you likely have the
buffer size set too small. Slower computers need bigger buffer sizes
to work at all.  But, this is at odds with low latency for CW.
Increase the buffer size on SetUp/Audio, and see if that improve things.

--- Graham

==

On Thu, Jul 22, 2010 at 3:31 PM, Mike WA8BXN  wrote:

> Just got my 1500 today (ordered Dayton weekend online). Took a bit of
> adjusting the netbook to get receive to work decently. Running XP and 1.5
> GB
> usable ram for reference. Had to play with screen resolution (set it to
> virtual 1024 x 768) to get all of the PowerSDR window to display. I can
> receive audio out of the computer speakers with VAC turned on, but that
> seems to up the CPU usage some. With it off in RC I am getting around 25%
> usage.
>
>
>
> With PowerSDR running but not started usage is about 1.5%, I turned off
> most
> the usual junk that runs in the background.
>
>
>
> The show stopper is trying to transmit CW. Using hand key I get a horrible
> sounding note in the headphones and something even worse looking on an
> SDR-1000 running on another computer.
>
>
>
> I would really like to be able to use the 1500 with the Acer netbook for
> portable use. I have some other computers to try the 1500 with and will do
> so. Would like to hear from anyone else using the Acer Aspire One netbook
> with the 1500.
>
>
>
> 73/72 - Mike WA8BXN
>
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