Re: [Elecraft] Ignore my previous post on Satellite Internet

[Oliver Dröse]

Don,

bandwidth is not the problem, you can run a remote reliably on a 128 
kBit/s connection (been there, done that). The problem with satellite 
internet is latency! For remote you want to stay below 100 ms RTT (round 
trip time), better yet below 70 ms for a smooth experience. With 
satellite you're talking about > 1 sec RTT which is just unusable for 
remote.


73, Olli - DH8BQA

Contest, DX & radio projects: http://www.dh8bqa.de


Am 10.04.2016 um 05:51 schrieb Don Strom:

DSL internet is available at my remote site.It is only 10MBPS  speed.

I believe that is the minimum speed for remote radio so might not work that 
well at that speed.

Don W0EAR

Sent from Mail for Windows 10

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Re: [Elecraft] Ignore my previous post on Satellite Internet

[PKA]

Don
My experience is that the biggest problem would be jitter. Oli is correct that 
you can operate RC over a 128 kbps link. But you can also operate RC over 
fairly high latency links - it wont give you a "smooth" feeling when tuning 
across the band- the VFO dial will seem to be connected via a rubber band. But 
it is something you (some at least - and I for one) can adapt to. I have tried 
it extensively over the years, started using RC over 10years ago. I would not 
call it unusable if the alternative is nil. If you have alternatives its 
another matter. I have QSOed with this iPad from a Norwegian flight (from EA8 
to OZ) and while it was not too "smooth" it was definitely useful and a lot of 
fun.

But if you have high jitter it is my experience that RC does not work 
satisfactorily. At least the software must be written with high jitter in mind. 
If not, the software may drop out frequently driving you crazy and its my 
experience that VoIP based on TCP/IP will not work well.

My guess is that with a 10 Mbps connection you are likely to have low jitter 
and you will be just fine. Your XYL can enjoy streaming video on the same link 
with no problem and you wont have any "local QRM" during your QSOs. Have fun!

73 de OZ4UN
Poul-Erik

Sent from my iPad

> On 10 Apr 2016, at 09:17, Oliver Dröse  wrote:
> 
> Don,
> 
> bandwidth is not the problem, you can run a remote reliably on a 128 kBit/s 
> connection (been there, done that). The problem with satellite internet is 
> latency! For remote you want to stay below 100 ms RTT (round trip time), 
> better yet below 70 ms for a smooth experience. With satellite you're talking 
> about > 1 sec RTT which is just unusable for remote.
> 
> 73, Olli - DH8BQA
> 
> Contest, DX & radio projects: http://www.dh8bqa.de
> 
> 
>> Am 10.04.2016 um 05:51 schrieb Don Strom:
>> DSL internet is available at my remote site.It is only 10MBPS  speed.
>> 
>> I believe that is the minimum speed for remote radio so might not work that 
>> well at that speed.
>> 
>> Don W0EAR
>> 
>> Sent from Mail for Windows 10
>> 
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[Elecraft] Minimum bandwidth?

[John Langdon]

At my remote transmitter site, I have 10 mbps 'down' and 1.2 mbps 'up' and
everything works fine.

I expect that 1.2 mbps both directions would work, but have not actually
tried on a connection like that.

73 John N5CQ


-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don
Strom
Sent: Saturday, April 9, 2016 10:51 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Ignore my previous post on Satellite Internet

DSL internet is available at my remote site.It is only 10MBPS  speed.  

I believe that is the minimum speed for remote radio so might not work that
well at that speed.

Don W0EAR

Sent from Mail for Windows 10

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Re: [Elecraft] Operating remotely via Direct TV satellite provider

[Charlie T, K3ICH]

You can't violate the laws of nature.  That
satellite is 24,000 miles up, so every time you
access the net, there's an absolute minimum of a ½
second delay before you see the response on your
screen.
Since light travels at 186,000 miles per second,
you're stuck with the time delay of four trips
equaling a tad under 100,000 miles.
I typically get 10 to 20 MB speed on Exede
satellite, but that ½ sec makes it seem much
slower.
(My only alternative is 56k land line which I
would find totally obnoxious to have to go back
to.)

73, Charlie k3ICH


-Original Message-
From: Elecraft
[mailto:elecraft-boun...@mailman.qth.net] On
Behalf Of David Gilbert
Sent: Saturday, April 09, 2016 11:53 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Operating remotely via
Direct TV satellite provider


Not sure about the audio, but I think latency
would be the bigger issue.  I had satellite
internet (essentially Hughes. net) for about three
years before a wireless ISP opened shop in our
area.  My typical pings were on the order of
1300-1500 msec.  I don't think you'd want to live
with that for anything other than casual
ragchewing.

Dave   AB7E



On 4/9/2016 8:23 PM, Don Strom wrote:
> Is anyone operating their K3 remotely using a
satellite provider.
>
> I believe I heard that is not possible with
satellite internet at the remote site?
>
> Something to do with the way the audio is passed
via the internet connection.
>
> Don W0EAR
>
>

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Re: [Elecraft] New KX3 S/N 8769 with a question

[Phillip Zminda]

I used a small drill bit to countersink the holes as Ken suggested and also got 
a better screwdriver. I was able to get  the 1/4 in screws down flush.

Thanks for the help.

Phil N3ZP
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[Elecraft] What's best Soundcard Interface for KX3

[George_yv5wz]

I'm thinking to go QRP to South of Brasil with my new KX3
and I'm looking for doing JT65
What Soundcard interface would you recommend?

I appreciate your answers


73, George, YV5WZ



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Re: [Elecraft] Minimum bandwidth?

[Lynn W. Taylor, WB6UUT]

Ignore the faster speed, it's the slower speed on non-symmetric service.

The key question is always latency.

You can check out a VoIP calculator if you want to play the numbers, but 
most VoIP (and most cellular service) run around 8 kilobits/second.  No 
one offers IDSL service anymore, but it'd work beautifully at 128k 
(symmetric) with bandwidth to spare.


Where the problem lies is in the way the line is provisioned.

Where I live, there is only one provider that's worthwhile, the local 
telco.simply doesn't have enough bandwidth from the local central office 
to their first router.  The cable company doesn't admit they have 
service, even though there is a drop to the house.


That doesn't stop the Telco from selling 7 megabit service -- over and 
over and over.


So, sometimes I get 7 millisecond pings.  A lot of the time it's single 
digits, but every minute it'll jump over 500 msec.  Right now it's 
averaging about 250 msec, and the maximum has been 998 msec.


I've seen more than 4000 msec. (4 seconds).

Imagine trying to snag some amazing DX, and having the audio just stop 
for four seconds.


I could buy a faster wire, but they won't add bandwidth from the C.O. to 
the rest of the internet, so the latency would be the same.  I'd buy 
slower if they offered it.


73 -- Lynn

On 4/10/2016 2:59 AM, John Langdon wrote:

At my remote transmitter site, I have 10 mbps 'down' and 1.2 mbps 'up' and
everything works fine.

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Re: [Elecraft] KX3/PX3 Linux Utilities for Raspberry

[Eric Swartz WA6HHQ - Elecraft]

Guys, this thread was closed several days ago. Please see my list posting on 
this topic  

73,

Eric
Moderator
elecraft.com
---
Sent from my iPhone 6S

> On Apr 8, 2016, at 5:10 PM, Phil Wheeler  wrote:
> 
> 
> 
>> On 4/8/16 4:45 PM, Brendon Whateley wrote:
>> Phil,
>> 
>> With all due respect, your use case is clearly different from those of us
>> who are so enthusiastic. I've not had a Windows PC since XP was a new
>> thing, and I have no interest in going back to Windows. Our house is all
>> MacBook Pro and various Linux machines, including a growing number of RPi.
>> So the fact that you are happy with running Windows on a Mac is unrelated
>> to the fact that I want to dedicate a RPi to the shack duties and have
>> another in my Go Box so that I can literally grab my KX3 and hit the road
>> without messing with computer stuff. That way the shack RPi can be
>> permanently attached to its monitor, keyboard, mouse, etc. And the Go Box
>> can be configured for a small bluetooth keyboard/mouse device I have.
>> 
>> The RPi has the needed power for this use, and at $35 I can have several
>> for different locations as needed -- something I am not prepared to do with
>> MacBooks.
>> 
>> What this thread is showing is that there is a growing number of people who
>> feel that a RPi is a perfect solution for this use case, and if not that,
>> then some other Linux machine. We are hoping that Elecraft will open source
>> the utilities so that folks such as myself can help make this a reality.
> I suspect open sourcing the utilities would be a mistake.
>> 
>> Commenting on a thread to say "this doesn't apply to me, so I don't see why
>> anybody else would care" is a little self centered and leads to an
>> unfortunate tone which is so common in HAM communities -- it discourages
>> new hams such as myself from getting involved, or asking questions.
>> 
>> Regards,
>> - Brendon
>> KK6AYI
> 
> Eric closed this thread, but I must reply since you put words in quotation 
> marks which I never wrote ("this doesn't apply to me, so I don't see why 
> anybody else would care") -- very disingenuous and misleading of you, and 
> amazing that you would do so.
> 
> What I did say was "as a shack computer the idea of a separate computer unit 
> plus monitor plus keyboard seems a bit of a kluge." and nothing you said 
> relates to that statement.
> 
> I also said:
> 
> "So I just don't get all the enthusiasm for using an RPi (or BBB) as the
> shack computer to support the Elecraft utilities, etc.  No problem with
> Linux (which I can run on the MBAir, and do run on my RPi2), just with the
> physical arrangement."
> 
> and part of your reply did address that.
> 
> But inventing quotations which I did not say: Truly Troubling.
> 
> Phil W7OX
> 
> 
>> 
>>> On Fri, Apr 8, 2016 at 10:45 AM, Phil Wheeler  wrote:
>>> 
>>> Regarding the RPi, I like experimenting with it but as a shack computer
>>> the idea of a separate computer unit plus monitor plus keyboard seems a bit
>>> of a kluge.
>>> 
>>> Just now my shack computer is an 11" 2010 MacBook Air with 250GB SSD. It
>>> runs both Windows 10 and OS X 10.11.4, so I can use the many ham apps (such
>>> as EZNEC) unique to Windows and not requiring too much computing power. A
>>> real plus is that it can sit in front of my K3 or KX3 and I can still see
>>> the rig's front panel over the top of the computer's monitor -- and the
>>> monitor is plenty large enough for the digital modes, and the keyboard is
>>> full size.
>>> 
>>> My most compact RPi set up now is an RP2 with a small keyboard with
>>> trackpad and a 7" HDMI monitor. Due to the separate boxes that takes up
>>> more space than the 11" MacBook Air, while having a smaller-than-normal
>>> keyboard and a screen which is a challenge to use.
>>> 
>>> So I just don't get all the enthusiasm for using an RPi (or BBB) as the
>>> shack computer to support the Elecraft utilities, etc.  No problem with
>>> Linux (which I can run on the MBAir, and do run on my RPi2), just with the
>>> physical arrangement.
>>> 
>>> 73, Phil W7OX
>>> 
>>> 
 On 4/8/16 10:10 AM, Roger Klein wrote:
 
 Add me as well for running on the Pi, this would be useful to have.
 
 
 Roger N5RWK
> 
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Re: [Elecraft] What's best Soundcard Interface for KX3

[Robert Nobis]

For portable operations with my KX3, I use the SignaLink USB, mainly because of 
its small size.  There are better performing sound cards, but for compactness 
and ease of use the SignaLink works for me when I travel.

73,


Bob Nobis - N7RJN
n7...@nobis.net


> On Apr 10, 2016, at 09:41, George_yv5wz  wrote:
> 
> I'm thinking to go QRP to South of Brasil with my new KX3
> and I'm looking for doing JT65
> What Soundcard interface would you recommend?
> 
> I appreciate your answers
> 
> 
> 73, George, YV5WZ
> 
> 
> 
> --
> View this message in context: 
> http://elecraft.365791.n2.nabble.com/What-s-best-Soundcard-Interface-for-KX3-tp7616157.html
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Re: [Elecraft] What's best Soundcard Interface for KX3

[Don Wilhelm]

George,

You may not need any interface at all.  You may be able to use the 
internal soundcard in your computer.

If you do that, turn off sounds generated by your computer OS.
The other alternative is an inexpensive external soundcard.
Use VOX to transmit instead of PTT.  It simplifies the connections.

73,
Don W3FPR

On 4/10/2016 12:41 PM, George_yv5wz wrote:

I'm thinking to go QRP to South of Brasil with my new KX3
and I'm looking for doing JT65
What Soundcard interface would you recommend?




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Re: [Elecraft] What's best Soundcard Interface for KX3

[George_yv5wz]

Thank you Don!

So  you mean  I don't need to buy anything just my laptopthat's
interesting!

however, I'm kind of confusewhy so many brands of expensive interface
sound carddoes it represent any better signal or any using interface
?I mean 100 Box (signlink)  against simple USB soundcard (12 box)
.does it really matter? 




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[Elecraft] Band Conditions web page up...

[Dave Cole]

Hi,

For those using their K3's for DX, I have the band conditions page back
up again...  Shows current band conditions based on spot count
graphically, for all bands, (160-6), and all US CQ Zones, (3, 4, and
5), updated every 10 minutes, and showing history.  Click a graph to go
to more data on that band and zone.

http://nk7z.net/band-conditions/

-- 
73's, and thanks,
Dave (NK7Z)

For software/hardware reviews see:
http://www.nk7z.net

For MixW support see:
https://groups.yahoo.com/neo/groups/mixw/info

For SSTV help see:
http://groups.yahoo.com/neo/groups/MM-SSTV/info


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Re: [Elecraft] What's best Soundcard Interface for KX3

[Matt Zilmer]

My whole KX3 station, antenna wire and all, fits in an ammo can. The 
Creative Labs SB X-Fi Go! fits in just fine along with a couple of 3.5mm 
m-m cables.  The X-Fi is a small  USB dongle, about the size of a flash 
drive.  It's a good compromise between size and performance, and it 
isn't expensive.


73!

matt W6NIA

On 4/10/2016 9:41 AM, George_yv5wz wrote:

I'm thinking to go QRP to South of Brasil with my new KX3
and I'm looking for doing JT65
What Soundcard interface would you recommend?

I appreciate your answers


73, George, YV5WZ



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--
Always store beer in a dark place.  - R. Heinlein

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[Elecraft] Elecraft CW Net Announcement

[kev...@coho.net]

Good Morning,
   After a week of sunny, hot weather things have gotten back to normal 
- cloudy with chance of drizzle.  Propagation has improved slightly from 
last week with the solar flux rising above 100.  The hummingbirds were 
doing their best to eat all the biting flies but now they're back at the 
feeder.  They enjoy my new antenna as a resting spot.


Please join us at:
14050 kHz at 2200z Sunday (3 PM PDT Sunday)
 7045 kHz at 0100z Monday (6 PM PDT Sunday)

73,
   Kevin.  KD5ONS

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Re: [Elecraft] What's best Soundcard Interface for KX3

[Don Wilhelm]

George,

You laptop may have only a mono input for the mic/line-in, but for 
digital modes, only one channel is used, so it should work - just be 
sure to turn off sounds from your OS so those are not transmitted on the 
air.


A simple and inexpensive USB soundcard can eliminate the problem of 
sounds from the OS.  Just make certain the USB soundcard is *not* the 
default sound device.


For digital modes, you do not need an expensive interface.  Yes, some 
provide ready made cables to connect with your radio, some have galvanic 
isolation on the audio lines, and some provide PTT to the transceiver, 
but VOX works just great with the KX3 for digital modes (you don't need 
PTT).


The big difference between soundcards (including those built into 
interface boxes) for digital modes is the noise floor of the soundcard.  
You mentioned Signalink, and while popular, it is not the best interface 
available.


Try your laptop internal soundcard before buying anything else, it may 
be all you need.


73,
Don W3FPR

On 4/10/2016 2:09 PM, George_yv5wz wrote:

Thank you Don!

So  you mean  I don't need to buy anything just my laptopthat's
interesting!

however, I'm kind of confusewhy so many brands of expensive interface
sound carddoes it represent any better signal or any using interface
?I mean 100 Box (signlink)  against simple USB soundcard (12 box)
.does it really matter?




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Re: [Elecraft] What's best Soundcard Interface for KX3

[Robert Nobis]

George,

Many laptops do not have a good quality built-in sound cards. Their performance 
for very weak signals typically is not as good as using an external sound card. 
 You might want to test your internal PC sound card before you go to Brazil. If 
your internal sound card is able to consistently decode JT65 signals at levels 
below -19dB (for example -20 to -26 dB) it is probably acceptable.

You might wish to review Jim Brown’s (K9YC) Tutorial on sound cards:  
http://k9yc.com/USB_Interfaces.pdf

73,


Bob Nobis - N7RJN
n7...@nobis.net


> On Apr 10, 2016, at 11:09, George_yv5wz  wrote:
> 
> Thank you Don!
> 
> So  you mean  I don't need to buy anything just my laptopthat's
> interesting!
> 
> however, I'm kind of confusewhy so many brands of expensive interface
> sound carddoes it represent any better signal or any using interface
> ?I mean 100 Box (signlink)  against simple USB soundcard (12 box)
> .does it really matter? 
> 
> 
> 
> 
> --
> View this message in context: 
> http://elecraft.365791.n2.nabble.com/What-s-best-Soundcard-Interface-for-KX3-tp7616157p7616162.html
> Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] What's best Soundcard Interface for KX3

[John Pitz]

On the topic of sound cards, I was wondering what the advantages are to
using the IQ output of the KX3 as opposed to feeding the headphone jack
into the input of the soundcard?  I believe the IQ output requires
stereo input to work, but what are the advantages?  I have seen on this
list quite a few people with radios that have an IQ output still use the
headphone output to decode the digital modes.  I am under the impression
that the PX3 can display a 200KHz slice of the RF spectrum using the IQ
outputs whereas the best I can get out of fldigi is about 4KHz.  Is
there any way to coerce fldigi to display a wider chunk of the band?  I
am running fldigi on Linux.


John 
KD8CIV

On Sun, 2016-04-10 at 14:56 -0400, Don Wilhelm wrote:

> George,
> 
> You laptop may have only a mono input for the mic/line-in, but for 
> digital modes, only one channel is used, so it should work - just be 
> sure to turn off sounds from your OS so those are not transmitted on the 
> air.
> 
> A simple and inexpensive USB soundcard can eliminate the problem of 
> sounds from the OS.  Just make certain the USB soundcard is *not* the 
> default sound device.
> 
> For digital modes, you do not need an expensive interface.  Yes, some 
> provide ready made cables to connect with your radio, some have galvanic 
> isolation on the audio lines, and some provide PTT to the transceiver, 
> but VOX works just great with the KX3 for digital modes (you don't need 
> PTT).
> 
> The big difference between soundcards (including those built into 
> interface boxes) for digital modes is the noise floor of the soundcard.  
> You mentioned Signalink, and while popular, it is not the best interface 
> available.
> 
> Try your laptop internal soundcard before buying anything else, it may 
> be all you need.
> 
> 73,
> Don W3FPR
> 
> On 4/10/2016 2:09 PM, George_yv5wz wrote:
> > Thank you Don!
> >
> > So  you mean  I don't need to buy anything just my laptopthat's
> > interesting!
> >
> > however, I'm kind of confusewhy so many brands of expensive interface
> > sound carddoes it represent any better signal or any using interface
> > ?I mean 100 Box (signlink)  against simple USB soundcard (12 box)
> > .does it really matter?
> >
> >
> 
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[Elecraft] RJ-45 connector on K3/0 Mini

[Ron Castro]

I noticed an RJ-45 connector on the bottom panel of the K3/0 Mini but I
can't find any documentation about what it's for.  Anyone on the reflector
know?

 

Thanks,

  Ron Castro

   N6IE

www.N6IE.com  

 

Member:

  ARRL

 Redwood Empire DX Assn.

Northern California Contest Club

Northern California DX Foundation

  Society of Broadcast Engineers

 

 

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Re: [Elecraft] What's best Soundcard Interface for KX3

[Don Wilhelm]

John,

That is mixing apples and oranges.
The RX I/Q is a quadrature output that can be used as input to a 
panadapter software application or to the PX3.  Yes, it requires stereo 
for those applications.
They can display up to a 200 kHz slice of the band (if the bandwidth of 
the soundcard is great enough) and can produce either a real time 
spectrum display or a waterfall (signals over time) or both.

That is *only* display - there is no decoding of signals.

Decoding of digital mode signals requires only one channel to an 
application for decoding (and transmitting) the audio tones of the 
transceiver output when that transceiver is tuned to one or more digital 
stations.  The main purpose of that software application is to decode 
digital signals.
Yes, those applications contain a waterfall display so you can identify 
a particular station and click on it to tune to it (and decode it).


Theoretically, one channel of the RX I/Q could be routed to the digital 
software application running on the computer, but the bandwidth would be 
restricted to whatever width that application is designed to handle 
(4kHz or less).
But, the problem is the level available from the RX I/Q is too low to 
adequately drive those software applications.


So bottom line -- if you are using a digital mode software application, 
use the headphone output to drive one channel of the soundcard 
(typically the left channel).  If you are driving a soundcard for a 
panadapter display, use the RX I/Q output.


73,
Don W3FPR



On 4/10/2016 4:12 PM, John Pitz wrote:

On the topic of sound cards, I was wondering what the advantages are to
using the IQ output of the KX3 as opposed to feeding the headphone jack
into the input of the soundcard?  I believe the IQ output requires
stereo input to work, but what are the advantages?  I have seen on this
list quite a few people with radios that have an IQ output still use the
headphone output to decode the digital modes.  I am under the impression
that the PX3 can display a 200KHz slice of the RF spectrum using the IQ
outputs whereas the best I can get out of fldigi is about 4KHz.  Is
there any way to coerce fldigi to display a wider chunk of the band?  I
am running fldigi on Linux.




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Re: [Elecraft] RJ-45 connector on K3/0 Mini

[Don Wilhelm]

Factory test.
Will it be used for something in the future?  The answer is "maybe".

73,
Don W3FPR

On 4/10/2016 4:54 PM, Ron Castro wrote:

I noticed an RJ-45 connector on the bottom panel of the K3/0 Mini but I
can't find any documentation about what it's for.  Anyone on the reflector
know?




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[Elecraft] Strange K3's issues

[Tom SQ5CSF]

Hello everybody, 
I have a strange issues in my K3. Maybe someone has had similar symptoms and 
may help me... 

chronology of my actions with K3 

- from the begining K3 was never opened, worked fine. 
- 2015-06 - KXV3 installation 
- 144 QSO made in this period time - no issues. 
- 2015-12-31 Last firmware upgrade (5.38/1.25/2.86) 
- 26 QSO made in this period time - in January - no issues 
- SPDX contest (2016-04-02)- in my contest location - first operational 
problems. 
During the contest I have made about 40 qso. 
Many radio restart have been made to be able to work at all... 
symptoms: when I have pressed mic's PTT, TX led switch ON but there were no 
power output. 
The same situation was when I have used footswitch or playback message option. 
After few pressing of the PTT output power appeared. 

Next point was the AUT - time of the tuning was tottaly differen between next 
tunes. 
Next point - AF gain controls for main receiver. 
Radio was not reading the knob position to change the volume. 
Band change removed this issue for some time. 


- Home station - 2016-04-10 
Previous problems disappear, now i have a problem with the K3 power off. 
It's look like not complete internal procedure. 
whole firmwares were reloaded - issues still exist. 
configuration was restored from 2015-08 - issues still exist. 
Older firmwares were downloaded - issues still exist. 
Actual firmwares were downloaded with last saved configuration - issues still 
exist. 
- next point - when I switch on my Diamond power supply - K3 power on 
automatically. 


Some shots made by mobile You can have a look on vimeo: 
https://vimeo.com/162290764 

I will be grateful for any comments / tips 
Tom 
SQ5CSF 
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Re: [Elecraft] What's best Soundcard Interface for KX3

[Kevin Stover]

The IQ outputs are for displaying the received spectrum on a pan adapter 
like the PX3 or other spectrum display software like NaP3 through the 
sound card in the computer.
The audio output at the headphone jack is for feeding audio to digital 
mode software like FLDigi or MixW to work modes like PSK31, RTTY and 
JT65/9. FLDigi, MixW, or WSJT/x wouldn't know what to do with an IQ output.


On 4/10/2016 3:12 PM, John Pitz wrote:

On the topic of sound cards, I was wondering what the advantages are to
using the IQ output of the KX3 as opposed to feeding the headphone jack
into the input of the soundcard?  I believe the IQ output requires
stereo input to work, but what are the advantages?  I have seen on this
list quite a few people with radios that have an IQ output still use the
headphone output to decode the digital modes.  I am under the impression
that the PX3 can display a 200KHz slice of the RF spectrum using the IQ
outputs whereas the best I can get out of fldigi is about 4KHz.  Is
there any way to coerce fldigi to display a wider chunk of the band?  I
am running fldigi on Linux.


John
KD8CIV

On Sun, 2016-04-10 at 14:56 -0400, Don Wilhelm wrote:


George,

You laptop may have only a mono input for the mic/line-in, but for
digital modes, only one channel is used, so it should work - just be
sure to turn off sounds from your OS so those are not transmitted on the
air.

A simple and inexpensive USB soundcard can eliminate the problem of
sounds from the OS.  Just make certain the USB soundcard is *not* the
default sound device.

For digital modes, you do not need an expensive interface.  Yes, some
provide ready made cables to connect with your radio, some have galvanic
isolation on the audio lines, and some provide PTT to the transceiver,
but VOX works just great with the KX3 for digital modes (you don't need
PTT).

The big difference between soundcards (including those built into
interface boxes) for digital modes is the noise floor of the soundcard.
You mentioned Signalink, and while popular, it is not the best interface
available.

Try your laptop internal soundcard before buying anything else, it may
be all you need.

73,
Don W3FPR

On 4/10/2016 2:09 PM, George_yv5wz wrote:

Thank you Don!

So  you mean  I don't need to buy anything just my laptopthat's
interesting!

however, I'm kind of confusewhy so many brands of expensive interface
sound carddoes it represent any better signal or any using interface
?I mean 100 Box (signlink)  against simple USB soundcard (12 box)
.does it really matter?



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--
R. Kevin Stover
AC0H
ARRL
FISTS #11993
SKCC #215
NAQCC #3441


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[Elecraft] When do I need atten or preamp?

[Edward R Cole]

Interesting viewpoint.

I thought it would be interesting to take a look at my local noise 
floor.  I have the PR6/10 installed on my K3 SN-4043  (new synth not 
yet installed).  Measurements in SSB - 2.8 KHz:


10m was the band I was most interested in measuring so started 
there.  I turned DIGOUT-1 = OFF and no noise?  Oh, the preamp 
switches to ext connections so I installed a BNC jumper from IN to OUT.

S=3 on noise with no preamps.
S=5 with internal PRE on
S=7 with PR6/10=ON and PRE=OFF  (DIGIOUT-1 controls the PR6/10)
So noise is pretty high with the preamp turned on (without weak 
signals unable to determine if preamp helps actual noise foor).


12m  Identical to 10m noise.

20m:  S=4/5 with PRE=OFF

40m:  S=5 with PRE=OFF

80m:  S=5 with PRE=OFF

10-20m ANT is Hygain TH3mk4 3-element yagi at 52-foot.
80/40m is fan-style inverted-V dipole with feed at 40-foot

I generally do not use the ATT as there is not a lot of QRM/QRN to 
deal with and signals are not always strong at Alaskan 
distance.  Note that I do little HF operating so generally operate 
SSB and occasional psk-31 on 20m.  Most of the time the tuner is set 
on 20m.  All tests were with tuner set for min SWR except on 80m 
where it is bypassed.


I use the PR6/10 more for 6m SSB where is definitely helps 
(interestingly the KX3 with PRE=ON works as well on 6m 
reception).  PR6/10 also necessary for weak 10m signals.


So guess that probably supports Al's observations.  One thing I would 
take exception is working "weak signals" meaning signals that are 
weaker than noise.  Top eme CW operators can receive CW that is SNR < 
-6dB.  Digital modes like JT-65 can decode at -28 dB.  So one might 
benefit from running a preamp on 12-10-6m with a K3.  I have not run 
JT-65 on HF so leave that for those who do to comment.


Observations made at 1pm on Sunday in South-central Alaska (BP40iq).

73, Ed - KL7UW
PS:  AE6JV watch your mail for delivery in a couple days!

From: Al Lorona 
To: Elecraft Reflector 
Subject: [Elecraft] When do I need atten or preamp?
Message-ID:
<1876112178.88125.1460257728937.javamail.ya...@mail.yahoo.com>
Content-Type: text/plain; charset=UTF-8

I ran several simulations of the K3 receiver using Genesys (from 
Keysight Technologies) to find out how to use the attenuator and 
preamp optimally.


An article by Jim Fisk W1HR appeared in October 1975 in ham radio 
magazine where he gave the acceptable noise figure (NF) for a 
receiver on each HF band (excluding WARC bands, which didn't exist at 
the time). For instance, on 80 meters your receiver can have a NF as 
high as 37 dB (because the external noise level is so high), on 40 
the acceptable NF is 27 dB, on 20 it's 24 dB, etc.


Going by the K3 block diagram in the Owner's Manual, I made a number 
of assumptions so my numbers are undoubtedly off by a couple of dB 
(probably in the pessimistic direction). I also assumed a CW filter 
of 500 Hz, noise blanker off, and an outdoor antenna like a dipole. I 
modeled everything up to and including the 2nd IF amp. I included 
synthesizer phase noise.


Let's talk about 80 meters. As you would expect, even with the 10 dB 
attenuator switched in the K3 has more than enough sensitivity. Since 
it's not possible to hear signals below the external noise floor, it 
doesn't buy you anything to have more sensitivity than the noise 
floor. In fact, you could have up to 21 dB of attenuation and it 
would still be totally adequate, so K3S owners can use all of their 
15 dB if they want to. And definitely DO NOT ever turn on your preamp 
on 80; the only time this would be permissible is when using a small 
receiving loop direct into the RX ANT.


On 40, having the 10 dB attenuator in (and preamp out, of course) is 
still right on the good side of sensitivity. So, kick in your 
attenuator on 40 with a clear conscience... your receiver will be 
quiet, but not deaf. Additional loss will just begin to affect you on 
40, but only if you're in the habit of listening for signals right at 
the noise floor.


On 20, the 5 dB attenuator would be okay to use. Again, this is where 
K3S owners have a little more flexibility. If you have a K3 don't use 
the attenuator, unless you want to.


The preamp really isn't needed until you get to 10 meters, according 
to my simulations. Using it below 10 meters is just asking for 
unnecessary noise!


On SSB, the margins are even better [by 7 dB] because of the wider 
2.7 kHz bandwidth. And if the HF bands are noisier nowadays than in 
1975 due to plasma TVs, wireless devices and SMPSs, the K3 would have 
even more margin than I have presented here.


Al  W6LX


73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
dubus...@gmail.com

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[Elecraft] OT: HF weather fax

[Clint]

 

I am looking for a simple Windows 7, 8, 10 program that can decode NOAA HF
weather faxes using a laptop soundcard. I am helping my bro set-up his boat
and a Marine SSB/Ham radio.

Most programs I see are older, run Lunix or are to complex, we need
something simple. Any ideas?

 

Clint

KI6SSN

 

 

 

 

 

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Re: [Elecraft] Strange K3's issues

[Kevin Stover]

Works fine at home and loses it's mind at the contest location with 
different antennas, feed lines, etc

My first impression is an RFI problem at the contest location.

On 4/10/2016 4:17 PM, Tom SQ5CSF wrote:

Hello everybody,
I have a strange issues in my K3. Maybe someone has had similar symptoms and 
may help me...

chronology of my actions with K3

- from the begining K3 was never opened, worked fine.
- 2015-06 - KXV3 installation
- 144 QSO made in this period time - no issues.
- 2015-12-31 Last firmware upgrade (5.38/1.25/2.86)
- 26 QSO made in this period time - in January - no issues
- SPDX contest (2016-04-02)- in my contest location - first operational 
problems.
During the contest I have made about 40 qso.
Many radio restart have been made to be able to work at all...
symptoms: when I have pressed mic's PTT, TX led switch ON but there were no 
power output.
The same situation was when I have used footswitch or playback message option.
After few pressing of the PTT output power appeared.

Next point was the AUT - time of the tuning was tottaly differen between next 
tunes.
Next point - AF gain controls for main receiver.
Radio was not reading the knob position to change the volume.
Band change removed this issue for some time.


- Home station - 2016-04-10
Previous problems disappear, now i have a problem with the K3 power off.
It's look like not complete internal procedure.
whole firmwares were reloaded - issues still exist.
configuration was restored from 2015-08 - issues still exist.
Older firmwares were downloaded - issues still exist.
Actual firmwares were downloaded with last saved configuration - issues still 
exist.
- next point - when I switch on my Diamond power supply - K3 power on 
automatically.


Some shots made by mobile You can have a look on vimeo:
https://vimeo.com/162290764

I will be grateful for any comments / tips
Tom
SQ5CSF
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--
R. Kevin Stover
AC0H
ARRL
FISTS #11993
SKCC #215
NAQCC #3441


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Re: [Elecraft] What's best Soundcard Interface for KX3

[Geoff Allsup]

I use a Griffin iMic with my Mac with the standard accessory kit audio cables. 
Works great and it's simple. 

Geoff - W1OH


Sent from my iPhone

Geoff Allsup, W1OH   gall...@whoi.edu or w...@whoi.edu
Senior Engineer Upper Ocean Processes Group
Woods Hole Oceanographic InstitutionWoods Hole, MA


> On Apr 10, 2016, at 12:41, George_yv5wz  wrote:
> 
> I'm thinking to go QRP to South of Brasil with my new KX3
> and I'm looking for doing JT65
> What Soundcard interface would you recommend?
> 
> I appreciate your answers
> 
> 
> 73, George, YV5WZ
> 
> 
> 
> --
> View this message in context: 
> http://elecraft.365791.n2.nabble.com/What-s-best-Soundcard-Interface-for-KX3-tp7616157.html
> Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] RJ-45 connector on K3/0 Mini

[Ron D'Eau Claire]

It's for programming the unit at the factory. The full K3 and K3S have them
as well. 

73, Ron AC7AC

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ron
Castro
Sent: Sunday, April 10, 2016 1:55 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] RJ-45 connector on K3/0 Mini

I noticed an RJ-45 connector on the bottom panel of the K3/0 Mini but I
can't find any documentation about what it's for.  Anyone on the reflector
know?

 

Thanks,

  Ron Castro

   N6IE

www.N6IE.com  

 

Member:

  ARRL

 Redwood Empire DX Assn.

Northern California Contest Club

Northern California DX Foundation

  Society of Broadcast Engineers

 

 

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Re: [Elecraft] Strange K3's issues

[Tomasz]

It was my first idea till today morning when power button issue became.

btw
In the contest location ft450 and ft-897 works fine and I have been 
there few months ago with my K3 and all was ok.


 Tom

W dniu 4/10/2016 o 11:28 PM, Kevin Stover pisze:
Works fine at home and loses it's mind at the contest location with 
different antennas, feed lines, etc

My first impression is an RFI problem at the contest location.

On 4/10/2016 4:17 PM, Tom SQ5CSF wrote:

Hello everybody,
I have a strange issues in my K3. Maybe someone has had similar 
symptoms and may help me...


chronology of my actions with K3

- from the begining K3 was never opened, worked fine.
- 2015-06 - KXV3 installation
- 144 QSO made in this period time - no issues.
- 2015-12-31 Last firmware upgrade (5.38/1.25/2.86)
- 26 QSO made in this period time - in January - no issues
- SPDX contest (2016-04-02)- in my contest location - first 
operational problems.

During the contest I have made about 40 qso.
Many radio restart have been made to be able to work at all...
symptoms: when I have pressed mic's PTT, TX led switch ON but there 
were no power output.
The same situation was when I have used footswitch or playback 
message option.

After few pressing of the PTT output power appeared.

Next point was the AUT - time of the tuning was tottaly differen 
between next tunes.

Next point - AF gain controls for main receiver.
Radio was not reading the knob position to change the volume.
Band change removed this issue for some time.


- Home station - 2016-04-10
Previous problems disappear, now i have a problem with the K3 power off.
It's look like not complete internal procedure.
whole firmwares were reloaded - issues still exist.
configuration was restored from 2015-08 - issues still exist.
Older firmwares were downloaded - issues still exist.
Actual firmwares were downloaded with last saved configuration - 
issues still exist.
- next point - when I switch on my Diamond power supply - K3 power on 
automatically.



Some shots made by mobile You can have a look on vimeo:
https://vimeo.com/162290764

I will be grateful for any comments / tips
Tom
SQ5CSF
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[Elecraft] FS: KX3-2M-AT

[Chad Wasinger]

Hi Group,
 
I have a KX3-2M-AT internal 2 meter board for sale. The board is in good 
working order and has super sensitive receive on 2 meters. Included will be the 
board, cabling, assembly hardware and manual. 
 
$185 plus actual shipping costs via USPS Priority Mail.
 
Please contact me offline with any questions.
 
Thanks!
Chad
N0YK
  
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Re: [Elecraft] FS: KX3-2M-AT

[Chad Wasinger]

All - the board has been sold pending funds.
 
Thanks for all that replied so quickly! 
 
> From: chadwasin...@outlook.com
> To: elecraft@mailman.qth.net
> Date: Sun, 10 Apr 2016 16:53:27 -0500
> Subject: [Elecraft] FS: KX3-2M-AT
> 
> Hi Group,
>  
> I have a KX3-2M-AT internal 2 meter board for sale. The board is in good 
> working order and has super sensitive receive on 2 meters. Included will be 
> the board, cabling, assembly hardware and manual. 
>  
> $185 plus actual shipping costs via USPS Priority Mail.
>  
> Please contact me offline with any questions.
>  
> Thanks!
> Chad
> N0YK
> 
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Re: [Elecraft] What's best Soundcard Interface for KX3

[George_yv5wz]

Thanks Don

I tried with my Laptop Soundcard and it decodes signal even -24
So  I guess sound card its ok.but  when I connect Mic jack to my pc
output (phones) .it keys my KX3 (TX red led on)..I dont get it!!  



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Re: [Elecraft] What's best Soundcard Interface for KX3

[George_yv5wz]

Thnaks Robert 
Laptop its decoding -24 signals

so I guess I'm ok... but for some reason when I connect  audio Cable .I
got PPT on.I mean  just connecting plug in MIC jack and Audioand TX
red led lights on



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Re: [Elecraft] RJ-45 connector on K3/0 Mini

[Nr4c]

Factory use only. 

Sent from my iPhone
...nr4c. bill


> On Apr 10, 2016, at 4:54 PM, Ron Castro  wrote:
> 
> I noticed an RJ-45 connector on the bottom panel of the K3/0 Mini but I
> can't find any documentation about what it's for.  Anyone on the reflector
> know?
> 
> 
> 
> Thanks,
> 
>  Ron Castro
> 
>   N6IE
> 
>www.N6IE.com  
> 
> 
> 
> Member:
> 
>  ARRL
> 
> Redwood Empire DX Assn.
> 
> Northern California Contest Club
> 
> Northern California DX Foundation
> 
>  Society of Broadcast Engineers
> 
> 
> 
> 
> 
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Re: [Elecraft] Strange K3's issues

[Guy Olinger K2AV]

It's not a complete answer, but treat the K3 like it's a computer.  Always
turn it off with its own power button so it can go through its shutdown
procedures and turn itself off after all the data is cleaned up or stored
properly. Only turn on the K3 when the power is up and stable. A PC power
supply has circuitry to assure stability by communicating with the
motherboard.

Turning the K3 on or off from the power supply switch is like turning a PC
on/off by pushing/pulling the power plug at the motherboard.

Also make sure the power supply voltage is not sagging during transmit. One
person I know was going from 12 to 9 volts key down at 100 watts. Problems
with the wire, the connectors and the power supply.

Previous poster referenced RFI in the shack which can generate baffling
symptoms that make no sense.

Good luck sorting it all out.

73, Guy K2AV

On Sunday, April 10, 2016, Tom SQ5CSF  wrote:

> Hello everybody,
> I have a strange issues in my K3. Maybe someone has had similar symptoms
> and may help me...
>
> chronology of my actions with K3
>
> - from the begining K3 was never opened, worked fine.
> - 2015-06 - KXV3 installation
> - 144 QSO made in this period time - no issues.
> - 2015-12-31 Last firmware upgrade (5.38/1.25/2.86)
> - 26 QSO made in this period time - in January - no issues
> - SPDX contest (2016-04-02)- in my contest location - first operational
> problems.
> During the contest I have made about 40 qso.
> Many radio restart have been made to be able to work at all...
> symptoms: when I have pressed mic's PTT, TX led switch ON but there were
> no power output.
> The same situation was when I have used footswitch or playback message
> option.
> After few pressing of the PTT output power appeared.
>
> Next point was the AUT - time of the tuning was tottaly differen between
> next tunes.
> Next point - AF gain controls for main receiver.
> Radio was not reading the knob position to change the volume.
> Band change removed this issue for some time.
>
>
> - Home station - 2016-04-10
> Previous problems disappear, now i have a problem with the K3 power off.
> It's look like not complete internal procedure.
> whole firmwares were reloaded - issues still exist.
> configuration was restored from 2015-08 - issues still exist.
> Older firmwares were downloaded - issues still exist.
> Actual firmwares were downloaded with last saved configuration - issues
> still exist.
> - next point - when I switch on my Diamond power supply - K3 power on
> automatically.
>
>
> Some shots made by mobile You can have a look on vimeo:
> https://vimeo.com/162290764
>
> I will be grateful for any comments / tips
> Tom
> SQ5CSF
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Re: [Elecraft] OT: HF weather fax

[Fred Jensen]

I copy Pacific WEFAX from NMC using my K3 and MIXW, on Windoze 10 now, 
but I've done it on 98, XP, and 7 too.  MIXW is fairly old, but really 
works well.  Also copies a variety of other dig modes [no JT's] and 
SSTV, should you like to have noisy images of scantily clad women on 
your computer. :-))


The WEFAX from NMC are really big, as in E-size drawings or maybe 
bigger.  I watch them until they get to the area of the Pacific I care 
about and then start the save-to-file.  They're at 120 LPM, you can get 
the program to sync automatically, I usually just set the line rate to 
119 and watch the sync bar until it's over on the right or left edge.


73,

Fred K6DGW
- Northern California Contest Club
- CU in the Cal QSO Party 1-2 Oct 2016
- www.cqp.org

On 4/10/2016 2:28 PM, Clint wrote:


I am looking for a simple Windows 7, 8, 10 program that can decode NOAA HF
weather faxes using a laptop soundcard. I am helping my bro set-up his boat
and a Marine SSB/Ham radio.

Most programs I see are older, run Lunix or are to complex, we need
something simple. Any ideas?



Clint
KI6SSN


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Re: [Elecraft] What's best Soundcard Interface for KX3

[Don Wilhelm]

George,

You are making progress, receive is good - only a little more to go to 
handle the transmit situation.


The cause is because the ring contact on the microphone jack is PTT, and 
the unused channel (right) of the soundcard has a sufficiently low 
impedance (resistance) to trigger the PTT.  If you are set up to use 
VOX, you do not need PTT.


There are 2 solutions (I think the 2nd one is the best, but that is just 
my opinion):

1.) Enter the menu and set MIC BTN to OFF.
Since that requires you to turn MIC BTN to ON when going back to SSB 
with the MH3 microphone, I suggest #2.
2.) Build an adapter which has no connection to the 1st ring on the 
microphone plug.  In other words, connect the soundcard stereo plug to 
only the shell and tip of another jack and use that adapter between your 
soundcard audio out cable and the KX3 microphone jack. If you want to 
use PTT, you can bring out the ring contact to operate from whatever 
source you are deriving the PTT signal.


73,
Don W3FPR

On 4/10/2016 6:18 PM, George_yv5wz wrote:

Thanks Don

I tried with my Laptop Soundcard and it decodes signal even -24
So  I guess sound card its ok.but  when I connect Mic jack to my pc
output (phones) .it keys my KX3 (TX red led on)..I dont get it!!



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Re: [Elecraft] What's best Soundcard Interface for KX3

[Robert Nobis]

George,

That is great. -24 dB is good for a built in sound card. By the way what 
version of JT65 are you using?

Note that your transmit signal level is usually critical for JT65 and JT9. 
Also, I always use VOX to key the transmitter. 

73,


Bob Nobis - N7RJN
n7...@nobis.net


> On Apr 10, 2016, at 15:21, George_yv5wz  wrote:
> 
> Thnaks Robert 
> Laptop its decoding -24 signals
> 
> so I guess I'm ok... but for some reason when I connect  audio Cable .I
> got PPT on.I mean  just connecting plug in MIC jack and Audioand TX
> red led lights on
> 
> 
> 
> --
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Re: [Elecraft] What's best Soundcard Interface for KX3

[George_yv5wz]

Hey Robert


Yes I think I'm ok with my Sony VPCW12AX.probably is cause better sound
device than laptop  hahahaha..

I have WSJT-X  v1.6.0 r6263

What are the settings for VOX?  

By the way my software decode with KX3 set at USB I couldn't get any
decode set at DATA


73's



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Re: [Elecraft] What's best Soundcard Interface for KX3

[George_yv5wz]

Don

I like better 2nd option too
but on Sundayand 7:30 pm (local time).I cant imagine where I may
find 3.5 mm conectors

How do I set up  KX3 and  WSJT-x soft for VOX?

By the way I  get decode with radio set at USB mode but nothing set at
DATA mode.any idea ?


73,

George



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Re: [Elecraft] OT: HF weather fax

[Dave Cole]

Hi Fred,

I also use MixW for all digital modes, save JT modes...  I find that
for me it is far better than any other program out there.  I have it
connected to my K3 as well, and it does a good job on the Weather FAX,
as well as all other digital modes.  If you have a list of freqs, can
you send them to me off list...

I moderate the yahoo support group for MixW, (around 4000 users still
yet, so lots of support there), if you don't have the updated macros,
and manual for MixW, do visit the group.  

There is a Russian fellow there who has written a pile of DLLs for
contests, beyond the ones the Mixw site has, and a fellow that has
totally rewritten the help files as well!  All down-loadable and all
free...  

See the link at the bottom of my note here...  The one for MixW
support.

-- 
73's, and thanks,
Dave (NK7Z)

For software/hardware reviews see:
http://www.nk7z.net

For MixW support see:
https://groups.yahoo.com/neo/groups/mixw/info

For SSTV help see:
http://groups.yahoo.com/neo/groups/MM-SSTV/info


On Sun, 2016-04-10 at 16:35 -0700, Fred Jensen wrote:
> I copy Pacific WEFAX from NMC using my K3 and MIXW, on Windoze 10
> now, 
> but I've done it on 98, XP, and 7 too.  MIXW is fairly old, but
> really 
> works well.  Also copies a variety of other dig modes [no JT's] and 
> SSTV, should you like to have noisy images of scantily clad women on 
> your computer. :-))
> 
> The WEFAX from NMC are really big, as in E-size drawings or maybe 
> bigger.  I watch them until they get to the area of the Pacific I
> care 
> about and then start the save-to-file.  They're at 120 LPM, you can
> get 
> the program to sync automatically, I usually just set the line rate
> to 
> 119 and watch the sync bar until it's over on the right or left edge.
> 
> 73,
> 
> Fred K6DGW
> - Northern California Contest Club
> - CU in the Cal QSO Party 1-2 Oct 2016
> - www.cqp.org
> 

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Re: [Elecraft] What's best Soundcard Interface for KX3

[Robert Nobis]

George,

Not sure how to set up VOX using an internal sound card.  For use with my 
SignaLink USB, I simply adjusted the output level of the sound card until it 
properly keyed the transmitter.  

Also Chapter 6 in the Elect KX-3 manual covers VOX setup. See page 66.

I am also using USB rather than Data mode for decode with WSJT-X v1.7.0 dev.  I 
have been able to consistently get decodes down as low as  -26 to -27dB.

73,


Bob Nobis - N7RJN
n7...@nobis.net


> On Apr 10, 2016, at 16:58, George_yv5wz  wrote:
> 
> Hey Robert
> 
> 
> Yes I think I'm ok with my Sony VPCW12AX.probably is cause better sound
> device than laptop  hahahaha..
> 
> I have WSJT-X  v1.6.0 r6263
> 
> What are the settings for VOX?  
> 
> By the way my software decode with KX3 set at USB I couldn't get any
> decode set at DATA
> 
> 
> 73's
> 
> 
> 
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Re: [Elecraft] What's best Soundcard Interface for KX3

[George_yv5wz]

hey!!!

where did you get WSJT-X v1.7.0 dev  version?  

I will take a look to manual to try to set up VOX



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Re: [Elecraft] What's best Soundcard Interface for KX3

[Don Wilhelm]

George,

So use the 1st option until you can get the plugs and jacks to construct 
the adapter.


For VOX, just set VOX on - hold the button just to the lower left of the 
VFO A knob.  It is a per-mode setting.


Are you using the correct DATA sub-mode?  There are 4 and you should be 
using DATA A which should default to USB (If it is using the wrong 
sideband, the ALT button (Hold MODE) will change the sideband.

Tap DATA a second time and rotate the VFO B knob until you see DATA A.
The advantage of DATA A over SSB is that compression is turned off and 
TX EQ is turned to flat automatically.


Adjust your audio level (computer soundcard output slider and MIC Gain 
until you have 4 bars solid on the ALC meter with the 5th bar flickering.
Adjust the desired power output with the PWR knob.  Ignore the 
conventional advice for "no ALC" on the internet and also ignore the 
internat advice to adjust the power with the audio level.  That advice 
is for transceivers other than Elecraft.  Elecraft is different than 
other ham transceivers in the way power is controlled.


73,
Don W3FPR

On 4/10/2016 8:01 PM, George_yv5wz wrote:

Don

I like better 2nd option too
but on Sundayand 7:30 pm (local time).I cant imagine where I may
find 3.5 mm conectors

How do I set up  KX3 and  WSJT-x soft for VOX?

By the way I  get decode with radio set at USB mode but nothing set at
DATA mode.any idea ?


73,

George



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Re: [Elecraft] What's best Soundcard Interface for KX3

[Walter Underwood]

> On Apr 10, 2016, at 4:42 PM, Don Wilhelm  wrote:
> 
> 2.) Build an adapter which has no connection to the 1st ring on the 
> microphone plug.  In other words, connect the soundcard stereo plug to only 
> the shell and tip of another jack and use that adapter between your soundcard 
> audio out cable and the KX3 microphone jack. If you want to use PTT, you can 
> bring out the ring contact to operate from whatever source you are deriving 
> the PTT signal.

You don’t need to build an adaptor. A standard stereo to mono splitter will do 
the job. Plug into the left channel of the splitter, then plug the splitter 
into the KX3. See the details in this blog post.

https://observer.wunderwood.org/2015/08/16/yamaha-cm500-headset-with-ptt-on-elecraft-kx3/
 


wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

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[Elecraft] Grounding KPXA100 in RV Question

[Terry Brown]

Hello All,

 

I will be using my KXPA100, KX3 and PX3 while in my RV.  I do not plan on
operating while the vehicle is in motion.  I am planning on only operating
the station while connected to 120V mains or when the Generator is running.
I will power the system with a Powerwerx SPS-30DM.  I typically operate my
station with the power supply in fixed voltage mode.  The meter shows 14.1
to 14.3 volts when operating.  This should provide 100 watts output from the
KPXA100.

 

My question is regarding grounding requirements for the KPXA100.  I assume
that the amp needs to be grounded to the vehicle frame.  If the engine is
not running, will grounding the amp to the frame cause any problems with the
vehicle 12V system, or the separate 12Vbattery system that powers all 12 V
system in the RV?   While operating the generator but powering through the
Powerwerx supply be an issue?

 

When I am using a vertical antenna, I will ground one side to the vehicle
chassis.  Will the antenna and amp grounded to the same system cause
problems?  

 

What would be the downside to not grounding the KPXA100 as long as the
antenna is grounded to the frame, or if using a doublet, not having the
antenna grounded to the frame.

 

I have not operated mobile HF before so I am a novice at this.  The RV is a
2005 model on a Chevy truck chassis.

 

Thanks for the help.

 

Terry, N7TB

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Re: [Elecraft] Grounding KPXA100 in RV Question

[George Cortez via Elecraft]

I do it with mine and its not grounded. Just locate the antenna away from your 
transmitter. I run a 600w amp also.I use a portable antenna and about 75 feet 
of coax when I have the space. Plus its better on your RX as those inverters 
are pretty noisy. Try and keep it away from that as far as possible.
George NE2I





 

On Sunday, April 10, 2016 11:22 PM, Terry Brown  wrote:
 

 Hello All,

 

I will be using my KXPA100, KX3 and PX3 while in my RV.  I do not plan on
operating while the vehicle is in motion.  I am planning on only operating
the station while connected to 120V mains or when the Generator is running.
I will power the system with a Powerwerx SPS-30DM.  I typically operate my
station with the power supply in fixed voltage mode.  The meter shows 14.1
to 14.3 volts when operating.  This should provide 100 watts output from the
KPXA100.

 

My question is regarding grounding requirements for the KPXA100.  I assume
that the amp needs to be grounded to the vehicle frame.  If the engine is
not running, will grounding the amp to the frame cause any problems with the
vehicle 12V system, or the separate 12Vbattery system that powers all 12 V
system in the RV?  While operating the generator but powering through the
Powerwerx supply be an issue?

 

When I am using a vertical antenna, I will ground one side to the vehicle
chassis.  Will the antenna and amp grounded to the same system cause
problems?  

 

What would be the downside to not grounding the KPXA100 as long as the
antenna is grounded to the frame, or if using a doublet, not having the
antenna grounded to the frame.

 

I have not operated mobile HF before so I am a novice at this.  The RV is a
2005 model on a Chevy truck chassis.

 

Thanks for the help.

 

Terry, N7TB

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Re: [Elecraft] What's best Soundcard Interface for KX3

[Rick WA6NHC]

Bob,

While your decode level is admirable, using the SLUSB VOX to trigger the 
PTT is less than reliable.  You will be FAR better off using a CAT 
command (or RTS/DTS) for PTT.


However on my K3, I do set the tx volume to max on the sound card 
driver, the TX knob to noon, THEN adjust the ALC to 4 bars lit and the 
5th flickering.


Please note that if you change the pitch of the audio tone, you'll want 
to reset the ALC as there is a vast difference from 600 Hz output to 
2KHz output.


You can also use the DATA A mode for decoding, simplifying your setup 
(all data modes in one group).


One experiment I'm planning is using a second audio card in the desktop, 
to see if that improves low level decoding.


73,
Rick nhc

On 4/10/2016 5:17 PM, Robert Nobis wrote:

George,

Not sure how to set up VOX using an internal sound card.  For use with my 
SignaLink USB, I simply adjusted the output level of the sound card until it 
properly keyed the transmitter.

Also Chapter 6 in the Elect KX-3 manual covers VOX setup. See page 66.

I am also using USB rather than Data mode for decode with WSJT-X v1.7.0 dev.  I 
have been able to consistently get decodes down as low as  -26 to -27dB.

73,


Bob Nobis - N7RJN
n7...@nobis.net


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[Elecraft] RFI resistant Monitor

[KC6CNN]

Hello Everyone. 
I am running a Samsung 21 inch monitor on my Elecraft P3 SVGA. 
I just found that when the monitor is on it adds 2 bars of noise to my
meter. 
It is also turning off when I operate on certain bands. 
Does anyone know of a good monitor to combat RFI and Noise. 
I have had some local hams tell me to cut the power cable and run it from my
Astron and take out the switching power supply that came with the Samsung
monitor. 
Any suggestions and thoughts are appreciated. Oh PS I do have a bunch of
beads on the cable from P3 to monitor and on the power cable. 

Thanks
Gerald
KC6CNN




-
KC6CNN - Gerald
K1 # 0014
K2 # 5486
K3 # 6294
KX3 # 757
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Re: [Elecraft] What's best Soundcard Interface for KX3

[Jim Brown]

On Sun,4/10/2016 10:28 PM, Rick WA6NHC wrote:
While your decode level is admirable, using the SLUSB VOX to trigger 
the PTT is less than reliable. 


I have no experience with the Signal Link unit, but I use AFSK RTTY, 
JT65, JT9, ISCAT, and FSK441, making thousands of QSOs in a weekend 
contest. I've never used anything but VOX for any voice or digital mode, 
whether I was using the sound card built into my laptop or a nice USB 
sound card. It makes life MUCH simpler, and it works quite reliably if 
you set it up well.


Like with any VOX setup, you start with high VOX sensitivity while 
you're getting modulation levels right, then set the VOX for reliable 
operation. There are detailed setup instructions for audio levels (but 
not for setting VOX) in my review of USB sound cards at 
k9yc.com/publish.htm


73, Jim K9YC
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Re: [Elecraft] RFI resistant Monitor

[Jim Brown]

On Sun,4/10/2016 10:44 PM, KC6CNN wrote:

I just found that when the monitor is on it adds 2 bars of noise to my
meter. It is also turning off when I operate on certain bands.


I had exactly that experience with a Samsung that W4UAT gave me because 
it did that in his shack too. It also makes RF noise. The good news is 
that not all Samsung monitors are RFI dogs. I have two recent model 
Samsungs in my house and four in the shack. They are designed to run on 
power supplies labeled 14VDC, and the supply they sell you is a 
switching power supply that makes RF noise. I throw those power supplies 
away, cut the attached power cable and attach red/black PowePoles, and 
run them from either the 12V battery system in my shack  or a small 12V 
lead-acid cell that I float-charge from a linear 12V wall wart.


I also use ferrite common mode chokes on both the video cable that runs 
to the computer and the power supply cable "just in case" some RF trash 
is conducted to those cables, which the cables could radiate.


All that, and a lot more, is discussed in this "in progress" article for 
the National Contest Journal.  k9yc.com/KillingReceiveNoise.pdf


73, Jim K9YC
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[Elecraft] P3 Ref Lvl saving

[Bill Frantz]

I have noticed that my P3 does not correctly save the Ref Lvl 
for 160M over a power off/on cycle. The normal level for 160M 
here is about 96 while all the other bands are above 100. When I 
power off when set to another band, power on again, and switch 
to 160M, the Ref Lvl is set to the level of the band where I was 
when I turned off the power.


For example, if I am on 12M with a Ref Lvl of 144, and I power 
the K3 and P3 off and then on again, I come up on 12M with a Ref 
Lvl of 144 like I expect. If I then change bands, all the bands 
15M thru 80M come up to the last Ref Lvl I used on those bands, 
but 160M comes up at 144.


Note that I power the P3 from the K3 12V output and use the K3 
power switch to turn both of them on and off.


Has anyone else seen this behavior?

73 Bill AE6JV

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Re: [Elecraft] What's best Soundcard Interface for KX3

[Rick WA6NHC]

To be clear, the SLUSB VOX is the weak point if it is used for PTT. It 
is not reliable... this has little to do with the radio of any brand.


Rick

PS Congrats on the 160M VK0EK QSO, I know what an effort that was, I saw 
your call on DXA3 just after.




On 4/10/2016 10:58 PM, Jim Brown wrote:

On Sun,4/10/2016 10:28 PM, Rick WA6NHC wrote:
While your decode level is admirable, using the SLUSB VOX to trigger 
the PTT is less than reliable. 


I have no experience with the Signal Link unit, but I use AFSK RTTY, 
JT65, JT9, ISCAT, and FSK441, making thousands of QSOs in a weekend 
contest. I've never used anything but VOX for any voice or digital 
mode, whether I was using the sound card built into my laptop or a 
nice USB sound card. It makes life MUCH simpler, and it works quite 
reliably if you set it up well.


Like with any VOX setup, you start with high VOX sensitivity while 
you're getting modulation levels right, then set the VOX for reliable 
operation. There are detailed setup instructions for audio levels (but 
not for setting VOX) in my review of USB sound cards at 
k9yc.com/publish.htm


73, Jim K9YC


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