Re: [Flexradio] [FlexEdge] Antenna query

[Tim Ellison]

If you want a little more challenging antenna project for LEOs, look at an 
Double Cross.  I built one last fall and I have an OK view of the horizon and 
my AOS is about 3-4 degrees above the horizon for LEOs and the ISS. It throws 
in some phasing which makes it more fun to build.

http://www.hffax.de/html/simple_apt_antenna.html
http://www.poes-weather.com/~aptdecoder/jerry/CrossConcept/Documents/MARTES-QST-Feb-2008.pdf
http://www.poes-weather.com/~aptdecoder/jerry/CrossConcept/Documents/DCA-For-Beginner.doc
http://rjclick.perso.sfr.fr/cariboost_files/DCA-Assembly-Hints.pdf


-Tim


-Original Message-
From: flexedge-boun...@flex-radio.biz [mailto:flexedge-boun...@flex-radio.biz] 
On Behalf Of William H. Fite
Sent: Wednesday, May 11, 2011 8:14 PM
To: Greg Zenger [N2GZ]
Cc: flexe...@flex-radio.biz; FlexRadio Reflector
Subject: Re: [FlexEdge] [Flexradio] Antenna query

Well, Greg, that was my impression.  Hell, said I, I could build that in an 
afternoon.  One of the guys in the local club was praising it.

I'm currently using an Austin Ferret, which is fine for hitting every repeater 
within 75 miles or so.  I thought it would be fun to try some of the easier 
sats before I got all wild with az-el and yagis and so forth.
The Ferret is worthless for that.

I've looked at the eggbeaters but users are by no means unanimously enamored of 
them.

Thanks for the advice, guys.

Bill




On Wed, May 11, 2011 at 7:49 PM, Greg Zenger [N2GZ] wrote:

> Ill be honest, it looks like junk. Its nothing more than a 1/4 wave 
> vertical over a 4 radial counterpoise. If you wanted to build your own 
> it would be very simple and cost only a few dollars.
>
> Your money would be better spent getting a Diamond or Commet base antenna:
> http://www.rfparts.com/diamond/Product_Catalog/base_station.html
> http://www.cometantenna.com/
>
>
> if you are looking to make weak signal contacts on SSB, a horizontally 
> polarized antenna such as the M2 HO loops would do well:
> http://www.m2inc.com/products/uhf/70cm/432holoop.html
>
> If you want to do weak signal and satellite work, consider the M2 
> Eggbeater antennas
>
> http://store.fastcommerce.com/m2incshopcom/satellite-package-1-eb144-e
> b432-c rossboom-ff8081812f4359f1012fb1bbff7f5354-p.html
>
>
> Of course, for weak signal work, a beam is preferred, but I have made 
> contacts over 500 miles with my 70cm HO loops during band openings.
>
> -Greg
>
> -Original Message-
> From: flexradio-boun...@flex-radio.biz 
> [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of William H. Fite
> Sent: Wednesday, May 11, 2011 6:47 PM
> To: FlexRadio Reflector; flexe...@flex-radio.biz
> Subject: [Flexradio] Antenna query
>
> Please forgive me for going off topic here but is anyone familiar with 
> this antenna?
>
> http://www.gopherlink.com/DeltaXray/vhfUHFant.htm
>
> Opinions will be greatly appreciated.
>
> Thanks,
>
> Bill
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Re: [Flexradio] Antenna query

[William H. Fite]

Well, Greg, that was my impression.  Hell, said I, I could build that in an
afternoon.  One of the guys in the local club was praising it.

I'm currently using an Austin Ferret, which is fine for hitting every
repeater within 75 miles or so.  I thought it would be fun to try some of
the easier sats before I got all wild with az-el and yagis and so forth.
The Ferret is worthless for that.

I've looked at the eggbeaters but users are by no means unanimously enamored
of them.

Thanks for the advice, guys.

Bill




On Wed, May 11, 2011 at 7:49 PM, Greg Zenger [N2GZ] wrote:

> Ill be honest, it looks like junk. Its nothing more than a 1/4 wave
> vertical
> over a 4 radial counterpoise. If you wanted to build your own it would be
> very simple and cost only a few dollars.
>
> Your money would be better spent getting a Diamond or Commet base antenna:
> http://www.rfparts.com/diamond/Product_Catalog/base_station.html
> http://www.cometantenna.com/
>
>
> if you are looking to make weak signal contacts on SSB, a horizontally
> polarized antenna such as the M2 HO loops would do well:
> http://www.m2inc.com/products/uhf/70cm/432holoop.html
>
> If you want to do weak signal and satellite work, consider the M2 Eggbeater
> antennas
>
> http://store.fastcommerce.com/m2incshopcom/satellite-package-1-eb144-eb432-c
> rossboom-ff8081812f4359f1012fb1bbff7f5354-p.html
>
>
> Of course, for weak signal work, a beam is preferred, but I have made
> contacts over 500 miles with my 70cm HO loops during band openings.
>
> -Greg
>
> -Original Message-
> From: flexradio-boun...@flex-radio.biz
> [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of William H. Fite
> Sent: Wednesday, May 11, 2011 6:47 PM
> To: FlexRadio Reflector; flexe...@flex-radio.biz
> Subject: [Flexradio] Antenna query
>
> Please forgive me for going off topic here but is anyone familiar with this
> antenna?
>
> http://www.gopherlink.com/DeltaXray/vhfUHFant.htm
>
> Opinions will be greatly appreciated.
>
> Thanks,
>
> Bill
> ___
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> http://www.flexradio.com/
>
>
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Re: [Flexradio] Antenna query

[Greg Zenger [N2GZ]]

Ill be honest, it looks like junk. Its nothing more than a 1/4 wave vertical
over a 4 radial counterpoise. If you wanted to build your own it would be
very simple and cost only a few dollars.

Your money would be better spent getting a Diamond or Commet base antenna:
http://www.rfparts.com/diamond/Product_Catalog/base_station.html
http://www.cometantenna.com/


if you are looking to make weak signal contacts on SSB, a horizontally
polarized antenna such as the M2 HO loops would do well:
http://www.m2inc.com/products/uhf/70cm/432holoop.html

If you want to do weak signal and satellite work, consider the M2 Eggbeater
antennas
http://store.fastcommerce.com/m2incshopcom/satellite-package-1-eb144-eb432-c
rossboom-ff8081812f4359f1012fb1bbff7f5354-p.html


Of course, for weak signal work, a beam is preferred, but I have made
contacts over 500 miles with my 70cm HO loops during band openings.

-Greg

-Original Message-
From: flexradio-boun...@flex-radio.biz
[mailto:flexradio-boun...@flex-radio.biz] On Behalf Of William H. Fite
Sent: Wednesday, May 11, 2011 6:47 PM
To: FlexRadio Reflector; flexe...@flex-radio.biz
Subject: [Flexradio] Antenna query

Please forgive me for going off topic here but is anyone familiar with this
antenna?

http://www.gopherlink.com/DeltaXray/vhfUHFant.htm

Opinions will be greatly appreciated.

Thanks,

Bill
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http://www.flexradio.com/


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[Flexradio] Antenna query

[William H. Fite]

Please forgive me for going off topic here but is anyone familiar with this
antenna?

http://www.gopherlink.com/DeltaXray/vhfUHFant.htm

Opinions will be greatly appreciated.

Thanks,

Bill
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Re: [Flexradio] Antennas and PSDR diversity question

[William H. Fite]

I use this antenna which is manufactured by PixelSat.  The construction
quality is excellent, far better than the similar Wellbrook loop antenna.
It is much quieter than my 43' vertical though it has less gain.  However,
as virtually every receiver has more gain than you will ever need, that
doesn't matter.  Mine is mounted on top of a 4m pipe.  I have a rotor but
seldom bother with it.  Rotation helps you *a little* to null out
directional junk but doesn't seem to peak the desired signal much.

Two caveats:  First, when you connect the preamp, hand tighten the F
connectors, do not use a tool.  The first one I received I connected as I
would a TV (F connector, y'know) and promptly broke a solder joint at the
base of the connector inside the case.  Supposedly, PixelSat recognized that
issue and beefed up the connector but I have been careful since.  Second, it
appears to be pretty sensitive to voltage spikes.  I live in Central
Florida, which is literally the lightning capital of the world (we are
having a doozie as I write this)..  Everything I own is grounded, grounded,
grounded and isolated, isolated, isolated.  Nonetheless, after a fairly
minor thunderbumper I came home to find the power injector fried, though
nothing else was damaged and there was no evidence of a nearby strike.
However, PixelSat replaced the preamp and the injector at no cost to me.
Shipped out replacements the same day and merely asked me to send back the
damaged parts.  They even paid the shipping both ways.

I am entirely happy with this antenna.  A solid 5 on the eham scale.

Contact me offline if you have any questions.

Bill



On Wed, May 11, 2011 at 5:09 PM,  wrote:

>
>
> I have a SteppIR BigIR vertical that I use with my 5000A. Would like to use
> the
>
> diversity feature in PSDR and have been looking for antennas to use with
> the BigIR
>
> and the 5000. Was going to order a K9AY but I can only have it up in the
>
>   backyard during the late fall and winter months. In looking at the latest
> QST I saw
>
> an ad for a Shielded Active Broadband Magnetic Loop
>
> http://www.highgainstore.com/f/RF_PRO-1A_Specifications_&_Reviews.pdf
>
>
>
>
>
>
>
> So I was wondering what others would think about using this antenna with my
> BigIR
>
>
>
> and the 5000a. I could space them well over 100 feet apart.
>
>
>
>
>
>
>
> 73
>
>
>
> Zack
>
>
>
> N8FNR
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Re: [Flexradio] TX Audio Chain

[Bill Ockert]

Tim,

Thank you for the information.  I will keep it in mind as I slowly edge into 
the release version.


Sorry for the misunderstanding on ALC, flex support had described that it 
had moved from before

the COMP/DX box to after it which made sense, sorry I repeated that here.

Starting with a clean database is easy.  Not doing a data import or transfer 
is not.  With the multitude
of settings in the radio itself not to mention the possibility of hundreds 
of presets it is decidely NOT
plug and play to reentrer thiose or even to remember what they all are every 
time there is an update.
This is a fairly high impact issue that should be kept in mind as changes 
are being made.  It is great to

have all the adjustments, not so great to haveto redo them manually.

73 de Bill ND0B






- Original Message - 
From: "Tim Ellison" 

To: "Bill Ockert" 
Cc: 
Sent: Wednesday, May 11, 2011 4:39 PM
Subject: RE: [Flexradio] TX Audio Chain


The ACL did not move.  It was the placement of the filter that corrected the 
intermittent overshoot problem.


If you are having issues, you should start out with a clean default database 
and re-set up your audio settings manually; not doing a data import or 
transfer.  This ensures that you are using the default settings, some of 
which can be new.


Use the leveler.  It is needed for good constant audio.  If the audio chain 
is set up correctly, the leveler will only be adding a small gain component. 
Also DSP TX filters have a lot to do with the audio quality.  Small buffers 
(wider skirts) have a softer sound.  Larger buffers have narrow skirts and 
can make your audio sound a bit harder (not to be confused with harsh).


The end of the TX audio chain has essentially 2 ALC processes; the ALC 
itself (hard limit) and the compander/DX (soft limit) which functions as an 
ALC


Also, when setting the levels, I use the ALC meter and I NEVER EVER 
exceed -1 dB.  You really never want to hit or tickle 0 dB as that engages 
the ALC routines.  That 1 extra dB will not make any difference to the 
person listening on the other end.



-Tim


-Original Message-
From: Bill Ockert [mailto:bock...@ockert.us]
Sent: Wednesday, May 11, 2011 5:05 PM
To: Tim Ellison
Cc: flexradio@flex-radio.biz
Subject: Re: [Flexradio] TX Audio Chain

At the risk of being shot, drawn, quartered, tarred and feathered I am going 
to comment on this one.


I concur 100% with Tim's comments that the best SDR software should not have 
a steep learning curve.  I believe the changes to the audio chain 
inadvertently came into conflict with that.  Let me explain.


Prior to the RC2 version of the PowerSDR we had some of the above situation, 
it was not correct technically because of the placement of the ALC in the 
chain but it was much closer to a plug and play experience.  You could set 
the mic level, keep an eye on ALC and the radio worked great.  I my case I 
was routinely being stopped on the air by folks telling me how great my 
audio sounded and usually asking what I was running for a microphone (a POS

Yamaha headset most of the time).I even had a contest station stop for
two minutes to tell me how great the audio was (I think it was actually a 
bathroom break so I was his distraction while his hands were too busy to log 
but I am flattering myself and saying it was my audio).


Then I loaded RC2.  To say all hell broke loose may be the biggest
understatement I have ever made.   I did some reading and ended up
readjusting to get ALC and MIC levels such that they tickled but did not 
exceed 0 dB.  Things were still a mess.  I was needing way more drive on my 
amp (50 to 60 on the drive compared with 32 prior) to get full output, I was 
having arc faults on the amp when I unkeyed on AM,  I was having arc faults 
on SSB even though the PowerMaster showed me peaking under 1500W, I was 
getting stopped on the air by folks telling me I was splattering and that my 
audio was horrid.  I finally concluded I had blown a tube in the amp so

changed tubes to no avail.  Changing back to RC1 fixed everything.   I was
not anxious for another run at that and was not finding enough information 
to make me think I knew enough to tackle the problem again.


I had forgot about this until two nights ago when two separate Flexers 
called me on 20M to ask what microphone I was using.  I had an extended

conversation with the second of them about flex tx audio quality.   He was
telling me mine was outstanding and the best I could do was tell him a 
little white lie and say his sounded "OK", it was actually distorted and 
pinched.  He had spent literally hours on the air with his elmer trying to 
figure out what was wrong and was down at sub -10dB levels on both the mic

and alc levels.   I asked him if this had started when he did a software
update.  It had.  I suggested he move back to RC1, I have not talked to him 
since but suspect he did.


So I have related but somewhat contradictory (and mostly rhetorical) 

Re: [Flexradio] TX Audio Chain

[Tim Ellison]

The ACL did not move.  It was the placement of the filter that corrected the 
intermittent overshoot problem.

If you are having issues, you should start out with a clean default database 
and re-set up your audio settings manually; not doing a data import or 
transfer.  This ensures that you are using the default settings, some of which 
can be new.

Use the leveler.  It is needed for good constant audio.  If the audio chain is 
set up correctly, the leveler will only be adding a small gain component.  Also 
DSP TX filters have a lot to do with the audio quality.  Small buffers (wider 
skirts) have a softer sound.  Larger buffers have narrow skirts and can make 
your audio sound a bit harder (not to be confused with harsh).

The end of the TX audio chain has essentially 2 ALC processes; the ALC itself 
(hard limit) and the compander/DX (soft limit) which functions as an ALC

Also, when setting the levels, I use the ALC meter and I NEVER EVER exceed -1 
dB.  You really never want to hit or tickle 0 dB as that engages the ALC 
routines.  That 1 extra dB will not make any difference to the person listening 
on the other end.


-Tim


-Original Message-
From: Bill Ockert [mailto:bock...@ockert.us]
Sent: Wednesday, May 11, 2011 5:05 PM
To: Tim Ellison
Cc: flexradio@flex-radio.biz
Subject: Re: [Flexradio] TX Audio Chain

At the risk of being shot, drawn, quartered, tarred and feathered I am going to 
comment on this one.

I concur 100% with Tim's comments that the best SDR software should not have a 
steep learning curve.  I believe the changes to the audio chain inadvertently 
came into conflict with that.  Let me explain.

Prior to the RC2 version of the PowerSDR we had some of the above situation, it 
was not correct technically because of the placement of the ALC in the chain 
but it was much closer to a plug and play experience.  You could set the mic 
level, keep an eye on ALC and the radio worked great.  I my case I was 
routinely being stopped on the air by folks telling me how great my audio 
sounded and usually asking what I was running for a microphone (a POS
Yamaha headset most of the time).I even had a contest station stop for
two minutes to tell me how great the audio was (I think it was actually a 
bathroom break so I was his distraction while his hands were too busy to log 
but I am flattering myself and saying it was my audio).

Then I loaded RC2.  To say all hell broke loose may be the biggest
understatement I have ever made.   I did some reading and ended up
readjusting to get ALC and MIC levels such that they tickled but did not exceed 
0 dB.  Things were still a mess.  I was needing way more drive on my amp (50 to 
60 on the drive compared with 32 prior) to get full output, I was having arc 
faults on the amp when I unkeyed on AM,  I was having arc faults on SSB even 
though the PowerMaster showed me peaking under 1500W, I was getting stopped on 
the air by folks telling me I was splattering and that my audio was horrid.  I 
finally concluded I had blown a tube in the amp so
changed tubes to no avail.  Changing back to RC1 fixed everything.   I was
not anxious for another run at that and was not finding enough information to 
make me think I knew enough to tackle the problem again.

I had forgot about this until two nights ago when two separate Flexers called 
me on 20M to ask what microphone I was using.  I had an extended
conversation with the second of them about flex tx audio quality.   He was
telling me mine was outstanding and the best I could do was tell him a little 
white lie and say his sounded "OK", it was actually distorted and pinched.  He 
had spent literally hours on the air with his elmer trying to figure out what 
was wrong and was down at sub -10dB levels on both the mic
and alc levels.   I asked him if this had started when he did a software
update.  It had.  I suggested he move back to RC1, I have not talked to him 
since but suspect he did.

So I have related but somewhat contradictory (and mostly rhetorical) questions 
to pose:

1.  Did the change in ALC position get implemented correctly and/or did 
something else inadvertently break when it was done.?  That change, which seems 
technically correct, seems to have caused more than its fair share of headache.

Then, assuming that the change to the audio chain did not somehow introduce a 
bug I would post the following question:

2.  Which is better, a technically incorrect placement of the ALC which was 
easy to adjust for extremely good audio or a technically correct placement of 
the the ALC which requires a previously undocumented multistep process which 
(as I have not tried it) may or may not get to the quality levels that we had 
before?

I have grudgingly started playing around with the release version as I do not 
want to get lost in the dust.  The information that has come out as part of 
this discussion will be invaluable.

73 de Bill ND0B






- Original Message -
From: "Tim Ellison" 
To:

Re: [Flexradio] Problem installing com0com

[Tim Ellison]

Did you install the 64-bit version?


-Tim


-Original Message-
From: flexradio-boun...@flex-radio.biz 
[mailto:flexradio-boun...@flex-radio.biz] On Behalf Of jonwei...@aol.com
Sent: Wednesday, May 11, 2011 4:14 PM
To: flexradio@flex-radio.biz
Subject: [Flexradio] Problem installing com0com

Using Windows 7 64 bit. Followed the instructions on the Flex site exactly: 
 turned off UAC, did proper bcdedit.exe command. I kept getting a couple of 
error messages as it was downloading, but it allowed me to  continue. 
Finished the download, but didn't download correctly. Never got  the  "new 
hardware" message. Tried it a could of times. Also had problem  with FLDIGI. 
Downloaded fine, but get message "application not working" when I  go to set it 
up. Installed with no problem in another computer with the same OS  system. 
go figure.
 
JON,
K1VVC
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[Flexradio] Antennas and PSDR diversity question

[vtnn43e]

I have a SteppIR BigIR vertical that I use with my 5000A. Would like to use the 

diversity feature in PSDR and have been looking for antennas to use with the 
BigIR 

and the 5000. Was going to order a K9AY but I can only have it up in the 

  backyard during the late fall and winter months. In looking at the latest QST 
I saw 

an ad for a Shielded Active Broadband Magnetic Loop 

http://www.highgainstore.com/f/RF_PRO-1A_Specifications_&_Reviews.pdf 



  



So I was wondering what others would think about using this antenna with my 
BigIR 



and the 5000a. I could space them well over 100 feet apart. 



  



73 



Zack 



N8FNR
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Re: [Flexradio] Problem installing com0com

[Keith Goobie]

Jon

Com0com normally installs very cleanly.  Proper install and configuration
can be validated through the device manager in the control panel.  It has
its own heading.

If you had download problems with com0com and fldigi, I would start by
de-installing fldigi and com0com after a clean download.

My gut tells me that you might have a memory problem on the new computer.

If com0com is still not playing nicely, there is always vspmanager, which
also plays very nicely with ddutil.

Keith





On 5/11/11 4:14 PM, "jonwei...@aol.com"  wrote:

> Using Windows 7 64 bit. Followed the instructions on the Flex site exactly:
>  turned off UAC, did proper bcdedit.exe command. I kept getting a couple
> of error messages as it was downloading, but it allowed me to  continue.
> Finished the download, but didn't download correctly. Never got  the  "new
> hardware" message. Tried it a could of times. Also had problem  with FLDIGI.
> Downloaded fine, but get message "application not working" when I  go to set
> it 
> up. Installed with no problem in another computer with the same OS  system.
> go figure.
>  
> JON,
> K1VVC
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-- 
Keith Goobie
ke...@goobie.org
Richmond Hill, Ontario



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Re: [Flexradio] TX Audio Chain

[Bill Ockert]

At the risk of being shot, drawn, quartered, tarred and feathered I am going 
to comment on this one.


I concur 100% with Tim's comments that the best SDR software should not have 
a steep learning curve.  I believe the changes to the audio chain 
inadvertently came into conflict with that.  Let me explain.


Prior to the RC2 version of the PowerSDR we had some of the above situation, 
it was not correct technically because of the placement of the ALC in the 
chain but it was much closer to a plug and play experience.  You could set 
the mic level, keep an eye on ALC and the radio worked great.  I my case I 
was routinely being stopped on the air by folks telling me how great my 
audio sounded and usually asking what I was running for a microphone (a POS 
Yamaha headset most of the time).I even had a contest station stop for 
two minutes to tell me how great the audio was (I think it was actually a 
bathroom break so I was his distraction while his hands were too busy to log 
but I am flattering myself and saying it was my audio).


Then I loaded RC2.  To say all hell broke loose may be the biggest 
understatement I have ever made.   I did some reading and ended up 
readjusting to get ALC and MIC levels such that they tickled but did not 
exceed 0 dB.  Things were still a mess.  I was needing way more drive on my 
amp (50 to 60 on the drive compared with 32 prior) to get full output, I was 
having arc faults on the amp when I unkeyed on AM,  I was having arc faults 
on SSB even though the PowerMaster showed me peaking under 1500W, I was 
getting stopped on the air by folks telling me I was splattering and that my 
audio was horrid.  I finally concluded I had blown a tube in the amp so 
changed tubes to no avail.  Changing back to RC1 fixed everything.   I was 
not anxious for another run at that and was not finding enough information 
to make me think I knew enough to tackle the problem again.


I had forgot about this until two nights ago when two separate Flexers 
called me on 20M to ask what microphone I was using.  I had an extended 
conversation with the second of them about flex tx audio quality.   He was 
telling me mine was outstanding and the best I could do was tell him a 
little white lie and say his sounded "OK", it was actually distorted and 
pinched.  He had spent literally hours on the air with his elmer trying to 
figure out what was wrong and was down at sub -10dB levels on both the mic 
and alc levels.   I asked him if this had started when he did a software 
update.  It had.  I suggested he move back to RC1, I have not talked to him 
since but suspect he did.


So I have related but somewhat contradictory (and mostly rhetorical) 
questions to pose:


1.  Did the change in ALC position get implemented correctly and/or did 
something else inadvertently break when it was done.?  That change, which 
seems technically correct, seems to have caused more than its fair share of 
headache.


Then, assuming that the change to the audio chain did not somehow introduce 
a bug I would post the following question:


2.  Which is better, a technically incorrect placement of the ALC which was 
easy to adjust for extremely good audio or a technically correct placement 
of the the ALC which requires a previously undocumented multistep process 
which (as I have not tried it) may or may not get to the quality levels that 
we had before?


I have grudgingly started playing around with the release version as I do 
not want to get lost in the dust.  The information that has come out as part 
of this discussion will be invaluable.


73 de Bill ND0B






- Original Message - 
From: "Tim Ellison" 

To: "William H. Fite" 
Cc: 
Sent: Wednesday, May 11, 2011 9:30 AM
Subject: Re: [Flexradio] TX Audio Chain


Disclaimer: The following is my personal opinion and is not  necessarily the 
views of FlexRadio nor should you derive any future expectations based on my 
comments.


Ideally, the "best" SDR software should not have a steep learning curve 
unless you want it.  It is software and being so you can make it smarter to 
use.  There should be two basic modes of operation; user and expert.  In 
User mode, things should be more "plug-and-play" like, where you can get the 
radio operational with minimal effort and technical knowledge of the 
underlying processes.  This is the mode of operation for most pragmatist (I 
hate the phrase "appliance operator") who may not have the desire to know, 
for example,  the "black art" of audio stage balancing and engineering. 
Then there is the Expert mode for others who, like me, have a deep desire to 
"know" how the thing works and need all the switches, buttons, sliders and 
knobs (along with the all so necessary "reset to factory defaults" feature) 
to work with that provides the insights to how the controls behave and why.


I think as Flexers, we have a wonderful and functional technical hierarchy 
where complex  information gets passed down from the Gurus (Gerald,

[Flexradio] Problem installing com0com

[JONWEINER]

Using Windows 7 64 bit. Followed the instructions on the Flex site exactly: 
 turned off UAC, did proper bcdedit.exe command. I kept getting a couple  
of error messages as it was downloading, but it allowed me to  continue. 
Finished the download, but didn't download correctly. Never got  the  "new 
hardware" message. Tried it a could of times. Also had problem  with FLDIGI. 
Downloaded fine, but get message "application not working" when I  go to set it 
up. Installed with no problem in another computer with the same OS  system. 
go figure.
 
JON,
K1VVC
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Re: [Flexradio] TX Audio Chain

[Tim Ellison]

" How about the VAC RX chain?  "

Using the diagram referenced below
http://kc.flexradio.com/KnowledgebaseArticle50478.aspx

VAC inputs at the Audio Mixer point and bypasses the DE/Gate, EQ, Leveler, and 
compander/DX.  VAC goes through the ALC stage.

VAC along with RX1/RX2  audio routing became a convoluted thing in PowerSDR 
when the RX2 was introduced.  PowerSDR was not designed for VAC based SO2R, so 
you have to fiddle with the controls you have until it works.


" how do I tell if I am overdriving the VAC when RXing?  "

By the receiving indicators available digital mode program, such as waterfall 
intensity of a AF audio input meter - just like you do with every other ham 
radio.

" What I'd find very useful is a diagram somewhere showing how all the various 
stages are interconnected, where their controls are (on-screen or inside Setup 
screens), and which settings are saved in Profiles."

That would be nice, but you would have to go through the logic in the code to 
figure all that out.  I don't know if Eric even knows how it is all put 
together :-)

" are any RX-oriented settings saved in a "TX Profile"?  "

Always look in the KB for the answers to your questions or look at the TX 
profile tag pairs in the PowerSDR XML database.
http://kc.flexradio.com/KnowledgebaseArticle50138.aspx


-Tim


-Original Message-
From: Jack Haverty [mailto:k3...@arrl.net] 
Sent: Wednesday, May 11, 2011 2:56 PM
To: Tim Ellison
Cc: Dave Beumer WØDHB; 'W1AEX - Rob'; flexradio@flex-radio.biz
Subject: Re: [Flexradio] TX Audio Chain

How about the VAC RX chain?  

IIRC, VAC RX audio (e.g., from PSDR to MMTTY) is affected not only by the 
"RX/TX Gain" sliders in the "VAC panel", but also by the sliders -
L/R faders and level sliders - in the "MultiRX panel".   So there's a
similar question of how to best set up the gains (and sample rates etc.) in the 
various stages of RX through VAC.

If you're trying to use VAC for a pseudo-SO2R operation in digital modes, you 
need to have these controls set correctly to get each audio
channel separated through VAC.   I struggled for a while trying to
figure out why one RTTY station was being decoded in the "other" audio channel 
- turns out the L/R sliders still act as a mixer in VAC, which I didn't expect. 
 

With the controls in PSDR, combined with ones inside VAC itself and in the 
other program (e.g., MMTTY), there's a lot of things in the RX chain to adjust 
- and there's no ALC equivalent meter to help out. E.G., how do I tell if I am 
overdriving the VAC when RXing?  Or is there some kind of "AGC" somewhere 
acting to prevent that?

What I'd find very useful is a diagram somewhere showing how all the various 
stages are interconnected, where their controls are (on-screen or inside Setup 
screens), and which settings are saved in Profiles.
E.G., are any RX-oriented settings saved in a "TX Profile"?  

I'd be happy to help make such a diagram.

73,
/Jack


On Wed, 2011-05-11 at 18:20 +, Tim Ellison wrote:
> VAC bypasses all of the audio processing stages (as it should be).  Just use 
> the ACL meter to make sure you are not clipping the DSP.
> 
> 
> -Tim
> 
> 
> -Original Message-
> From: flexradio-boun...@flex-radio.biz 
> [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Dave Beumer 
> WØDHB
> Sent: Wednesday, May 11, 2011 12:53 PM
> To: 'W1AEX - Rob'; flexradio@flex-radio.biz
> Subject: Re: [Flexradio] TX Audio Chain
> 
> Rob
> 
> This is great stuff, Thanks.
> 
> I'm not clear on where VAC comes into the audio chain and which of these 
> adjustments would impact VAC audio input.
> 
> Per a prior knowledge base article, I've just been setting the drive to 100, 
> the meter to ALC and adjusting the TX Gain for a -3 reading.
> 
> Any advice on other adjustments for VAC/Digital ?
> 
> Dave
> W0DHB
> 
> -Original Message-
> From: flexradio-boun...@flex-radio.biz 
> [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of W1AEX - Rob
> Sent: Tuesday, May 10, 2011 1:17 PM
> To: flexradio@flex-radio.biz
> Subject: Re: [Flexradio] TX Audio Chain
> 
> Larry,
> 
> I emailed a step-by-step article to Neal today for consideration as a 
> possible addition to the Flex Wiki. Most people do exactly what you and I 
> did, plug in a mic, adjust the mic slider in the GUI, and run with it. 
> The necessary information is spread throughout the manual, but as I recall, 
> it's not all in one place. Besides, how many Flex users actually read the 
> entire manual? What I came up with is pasted below.
> 
> 73,
> 
> Rob W1AEX
> 
> --
> 
> Audio Gain Distribution Inside PowerSDR:
> 
> I have encountered lots of Flex/SDR users on the air who sound great 
> in every voice mode. However, it's not uncommon to hear stations who 
> seem to have a lot of grit, distortion, and harshness in their audio 
> in all the voice modes. As it turns out, many of these stations are 
> completely unaware of the multi-function TX meter and how to use it to 
> correctly set 

Re: [Flexradio] TX Audio Chain

[Jack Haverty]

How about the VAC RX chain?  

IIRC, VAC RX audio (e.g., from PSDR to MMTTY) is affected not only by
the "RX/TX Gain" sliders in the "VAC panel", but also by the sliders -
L/R faders and level sliders - in the "MultiRX panel".   So there's a
similar question of how to best set up the gains (and sample rates etc.)
in the various stages of RX through VAC.

If you're trying to use VAC for a pseudo-SO2R operation in digital
modes, you need to have these controls set correctly to get each audio
channel separated through VAC.   I struggled for a while trying to
figure out why one RTTY station was being decoded in the "other" audio
channel - turns out the L/R sliders still act as a mixer in VAC, which I
didn't expect.  

With the controls in PSDR, combined with ones inside VAC itself and in
the other program (e.g., MMTTY), there's a lot of things in the RX chain
to adjust - and there's no ALC equivalent meter to help out. E.G., how
do I tell if I am overdriving the VAC when RXing?  Or is there some kind
of "AGC" somewhere acting to prevent that?

What I'd find very useful is a diagram somewhere showing how all the
various stages are interconnected, where their controls are (on-screen
or inside Setup screens), and which settings are saved in Profiles.
E.G., are any RX-oriented settings saved in a "TX Profile"?  

I'd be happy to help make such a diagram.

73,
/Jack


On Wed, 2011-05-11 at 18:20 +, Tim Ellison wrote:
> VAC bypasses all of the audio processing stages (as it should be).  Just use 
> the ACL meter to make sure you are not clipping the DSP.
> 
> 
> -Tim
> 
> 
> -Original Message-
> From: flexradio-boun...@flex-radio.biz 
> [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Dave Beumer WØDHB
> Sent: Wednesday, May 11, 2011 12:53 PM
> To: 'W1AEX - Rob'; flexradio@flex-radio.biz
> Subject: Re: [Flexradio] TX Audio Chain
> 
> Rob
> 
> This is great stuff, Thanks.
> 
> I'm not clear on where VAC comes into the audio chain and which of these 
> adjustments would impact VAC audio input.
> 
> Per a prior knowledge base article, I've just been setting the drive to 100, 
> the meter to ALC and adjusting the TX Gain for a -3 reading.
> 
> Any advice on other adjustments for VAC/Digital ?
> 
> Dave
> W0DHB
> 
> -Original Message-
> From: flexradio-boun...@flex-radio.biz
> [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of W1AEX - Rob
> Sent: Tuesday, May 10, 2011 1:17 PM
> To: flexradio@flex-radio.biz
> Subject: Re: [Flexradio] TX Audio Chain
> 
> Larry,
> 
> I emailed a step-by-step article to Neal today for consideration as a 
> possible addition to the Flex Wiki. Most people do exactly what you and I 
> did, plug in a mic, adjust the mic slider in the GUI, and run with it. 
> The necessary information is spread throughout the manual, but as I recall, 
> it's not all in one place. Besides, how many Flex users actually read the 
> entire manual? What I came up with is pasted below.
> 
> 73,
> 
> Rob W1AEX
> 
> --
> 
> Audio Gain Distribution Inside PowerSDR:
> 
> I have encountered lots of Flex/SDR users on the air who sound great in 
> every voice mode. However, it's not uncommon to hear stations who seem 
> to have a lot of grit, distortion, and harshness in their audio in all 
> the voice modes. As it turns out, many of these stations are completely 
> unaware of the multi-function TX meter and how to use it to correctly 
> set the audio gain distribution throughout the Power SDR audio chain. 
> It's not unusual to find that one of the stages is inadvertently running 
> at maximum gain while another stage is set near the minimum to 
> compensate. This can invoke strange events such as ringing in the audio, 
> distortion, and aggressive ALC action with pumping and audio artifacts. 
> I certainly don't know everything there is to know about squeezing the 
> most out of the audio functions in Power SDR, but I did find that 
> balancing the gain from start to finish has brought very satisfactory 
> results for me and a number of others who were becoming very frustrated. 
> Pages 77 and 78 of the 2.x.x Power SDR manual "sort of" infer the 
> information given below, but I have found that many users are completely 
> unaware of any audio level settings beyond the front panel Mic slider. 
> Hopefully the steps below will help someone to avoid a disappointing 
> result when they start to transmit!
> 
> 1. Connect the Flex to a 50 ohm dummy load and select one of the voice 
> modes in Power SDR. Make sure that you have a TX profile selected that 
> has your bandwidth set as you deem appropriate for the phone mode you 
> are using.
> 
> 2. If you have either the "DX" or "Compander" button selected on the 
> front panel of Power SDR, unselect it now.
> 
> 3. The "Mic" slider on the Power SDR front panel GUI is scaled from 0 to 
> 70. Place it at the mid-point value of 35.
> 
> 4. In the upper right corner of the Power SDR interface use the TX 
> dropdown in the meter to select 

Re: [Flexradio] Flex-1500 and MixW 3.0.1b

[Neal Campbell]

When I install new systems, I always set the RX gain in the VAC to -10db. It
varies wildly per installation (and from release to release of PSDR) but
leaving it at 0db RX gain is almost always WAAYYY too high.

I know its a personal thing (because I have used MMTTY for so many years)
but I use the signal display in MMTTY to set the rx gain on my own systems.
I just tune to background noise and lower the RX gain until its barely
visible in the MMTTY display, then I know I am good to go!

73
Neal

On Wed, May 11, 2011 at 2:35 PM, Keith Goobie  wrote:

> Assuming you are using VAC, and ensuring your sample rates are consistent
> for all apps, make sure you are not overdriving the receive - this is
> something that can have a dramatic inpact.
>
> Keith
> Sent wirelessly from my BlackBerry device on the Bell network.
>
> ke...@goobie.org
>
> -Original Message-
> From: Graham Haddock 
> Sender: flexradio-boun...@flex-radio.biz
> Date: Wed, 11 May 2011 13:06:04
> To: F5UL
> Cc: 
> Subject: Re: [Flexradio] Flex-1500 and MixW 3.0.1b
>
> 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
> > ___
> > 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/
> >
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Re: [Flexradio] TX Audio Chain

[Dave Beumer WØDHB]

Thanks Rob and Tim

-Original Message-
From: Tim Ellison [mailto:telli...@itsco.com] 
Sent: Wednesday, May 11, 2011 12:21 PM
To: Dave Beumer WØDHB; 'W1AEX - Rob'; flexradio@flex-radio.biz
Subject: RE: [Flexradio] TX Audio Chain

VAC bypasses all of the audio processing stages (as it should be).  Just use
the ACL meter to make sure you are not clipping the DSP.


-Tim


-Original Message-
From: flexradio-boun...@flex-radio.biz
[mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Dave Beumer WØDHB
Sent: Wednesday, May 11, 2011 12:53 PM
To: 'W1AEX - Rob'; flexradio@flex-radio.biz
Subject: Re: [Flexradio] TX Audio Chain

Rob

This is great stuff, Thanks.

I'm not clear on where VAC comes into the audio chain and which of these
adjustments would impact VAC audio input.

Per a prior knowledge base article, I've just been setting the drive to 100,
the meter to ALC and adjusting the TX Gain for a -3 reading.

Any advice on other adjustments for VAC/Digital ?

Dave
W0DHB

-Original Message-
From: flexradio-boun...@flex-radio.biz
[mailto:flexradio-boun...@flex-radio.biz] On Behalf Of W1AEX - Rob
Sent: Tuesday, May 10, 2011 1:17 PM
To: flexradio@flex-radio.biz
Subject: Re: [Flexradio] TX Audio Chain

Larry,

I emailed a step-by-step article to Neal today for consideration as a
possible addition to the Flex Wiki. Most people do exactly what you and I
did, plug in a mic, adjust the mic slider in the GUI, and run with it. 
The necessary information is spread throughout the manual, but as I recall,
it's not all in one place. Besides, how many Flex users actually read the
entire manual? What I came up with is pasted below.

73,

Rob W1AEX

--

Audio Gain Distribution Inside PowerSDR:

I have encountered lots of Flex/SDR users on the air who sound great in 
every voice mode. However, it's not uncommon to hear stations who seem 
to have a lot of grit, distortion, and harshness in their audio in all 
the voice modes. As it turns out, many of these stations are completely 
unaware of the multi-function TX meter and how to use it to correctly 
set the audio gain distribution throughout the Power SDR audio chain. 
It's not unusual to find that one of the stages is inadvertently running 
at maximum gain while another stage is set near the minimum to 
compensate. This can invoke strange events such as ringing in the audio, 
distortion, and aggressive ALC action with pumping and audio artifacts. 
I certainly don't know everything there is to know about squeezing the 
most out of the audio functions in Power SDR, but I did find that 
balancing the gain from start to finish has brought very satisfactory 
results for me and a number of others who were becoming very frustrated. 
Pages 77 and 78 of the 2.x.x Power SDR manual "sort of" infer the 
information given below, but I have found that many users are completely 
unaware of any audio level settings beyond the front panel Mic slider. 
Hopefully the steps below will help someone to avoid a disappointing 
result when they start to transmit!

1. Connect the Flex to a 50 ohm dummy load and select one of the voice 
modes in Power SDR. Make sure that you have a TX profile selected that 
has your bandwidth set as you deem appropriate for the phone mode you 
are using.

2. If you have either the "DX" or "Compander" button selected on the 
front panel of Power SDR, unselect it now.

3. The "Mic" slider on the Power SDR front panel GUI is scaled from 0 to 
70. Place it at the mid-point value of 35.

4. In the upper right corner of the Power SDR interface use the TX 
dropdown in the meter to select "Mic". This allows you to view the level 
of the first audio stage of your Flex.

5. From the dropdown menus along the top left edge of the Power SDR 
interface, select "Mixer" and position it on your desktop so you can 
access it easily. With the Flex connected to a dummy load, key the 
transceiver and speak into the microphone at the voice level you 
typically use on the air. Observe the TX meter "Mic" level and adjust 
your level up or down with the "Mic" input level slider (or the slider 
for whichever input you are using) in the Mixer so that the maximum 
peaks reach no more than -2 dBm.

6. Now set the TX meter to "EQ". This allows you to view the level of 
your second audio stage. From the dropdown menus along the top left of 
the Power SDR interface, select "Equalizer" and position it on your 
desktop so that you can access the Transmit Equalizer easily. I would 
suggest that you enable the 10 band equalizer function at this time, if 
you have not already done so.

7. Observe the TX meter "EQ" level as you speak into the microphone and 
adjust the "Preamp" slider in the EQ interface so that your maximum 
peaks reach no more than -2 dBm.

8. Set the TX meter to Leveler. Open up the PSDR tab for DSP and go to 
the AGC/ALC settings page. As you transmit and speak into the mic, 
adjust the "Leveler" setting upward or downward from the default setting 
o

Re: [Flexradio] Flex-1500 and MixW 3.0.1b

[Keith Goobie]

Assuming you are using VAC, and ensuring your sample rates are consistent for 
all apps, make sure you are not overdriving the receive - this is something 
that can have a dramatic inpact. 

Keith
Sent wirelessly from my BlackBerry device on the Bell network.

ke...@goobie.org

-Original Message-
From: Graham Haddock 
Sender: flexradio-boun...@flex-radio.biz
Date: Wed, 11 May 2011 13:06:04 
To: F5UL
Cc: 
Subject: Re: [Flexradio] Flex-1500 and MixW 3.0.1b

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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> http://www.flexradio.com/
>
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Re: [Flexradio] Flex-1500 and MixW 3.0.1b

[Neal Campbell]

Also make sure that PSDR is running VAC before you start MixW so VAC uses
the 48K freq that PSDR sets it to!

73
Neal

On Wed, May 11, 2011 at 2:06 PM, Graham Haddock wrote:

> 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
> > ___
> > 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/
> >
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> http://www.flexradio.com/
>
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Re: [Flexradio] TX Audio Chain

[Tim Ellison]

VAC bypasses all of the audio processing stages (as it should be).  Just use 
the ACL meter to make sure you are not clipping the DSP.


-Tim


-Original Message-
From: flexradio-boun...@flex-radio.biz 
[mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Dave Beumer WØDHB
Sent: Wednesday, May 11, 2011 12:53 PM
To: 'W1AEX - Rob'; flexradio@flex-radio.biz
Subject: Re: [Flexradio] TX Audio Chain

Rob

This is great stuff, Thanks.

I'm not clear on where VAC comes into the audio chain and which of these 
adjustments would impact VAC audio input.

Per a prior knowledge base article, I've just been setting the drive to 100, 
the meter to ALC and adjusting the TX Gain for a -3 reading.

Any advice on other adjustments for VAC/Digital ?

Dave
W0DHB

-Original Message-
From: flexradio-boun...@flex-radio.biz
[mailto:flexradio-boun...@flex-radio.biz] On Behalf Of W1AEX - Rob
Sent: Tuesday, May 10, 2011 1:17 PM
To: flexradio@flex-radio.biz
Subject: Re: [Flexradio] TX Audio Chain

Larry,

I emailed a step-by-step article to Neal today for consideration as a possible 
addition to the Flex Wiki. Most people do exactly what you and I did, plug in a 
mic, adjust the mic slider in the GUI, and run with it. 
The necessary information is spread throughout the manual, but as I recall, 
it's not all in one place. Besides, how many Flex users actually read the 
entire manual? What I came up with is pasted below.

73,

Rob W1AEX

--

Audio Gain Distribution Inside PowerSDR:

I have encountered lots of Flex/SDR users on the air who sound great in 
every voice mode. However, it's not uncommon to hear stations who seem 
to have a lot of grit, distortion, and harshness in their audio in all 
the voice modes. As it turns out, many of these stations are completely 
unaware of the multi-function TX meter and how to use it to correctly 
set the audio gain distribution throughout the Power SDR audio chain. 
It's not unusual to find that one of the stages is inadvertently running 
at maximum gain while another stage is set near the minimum to 
compensate. This can invoke strange events such as ringing in the audio, 
distortion, and aggressive ALC action with pumping and audio artifacts. 
I certainly don't know everything there is to know about squeezing the 
most out of the audio functions in Power SDR, but I did find that 
balancing the gain from start to finish has brought very satisfactory 
results for me and a number of others who were becoming very frustrated. 
Pages 77 and 78 of the 2.x.x Power SDR manual "sort of" infer the 
information given below, but I have found that many users are completely 
unaware of any audio level settings beyond the front panel Mic slider. 
Hopefully the steps below will help someone to avoid a disappointing 
result when they start to transmit!

1. Connect the Flex to a 50 ohm dummy load and select one of the voice 
modes in Power SDR. Make sure that you have a TX profile selected that 
has your bandwidth set as you deem appropriate for the phone mode you 
are using.

2. If you have either the "DX" or "Compander" button selected on the 
front panel of Power SDR, unselect it now.

3. The "Mic" slider on the Power SDR front panel GUI is scaled from 0 to 
70. Place it at the mid-point value of 35.

4. In the upper right corner of the Power SDR interface use the TX 
dropdown in the meter to select "Mic". This allows you to view the level 
of the first audio stage of your Flex.

5. From the dropdown menus along the top left edge of the Power SDR 
interface, select "Mixer" and position it on your desktop so you can 
access it easily. With the Flex connected to a dummy load, key the 
transceiver and speak into the microphone at the voice level you 
typically use on the air. Observe the TX meter "Mic" level and adjust 
your level up or down with the "Mic" input level slider (or the slider 
for whichever input you are using) in the Mixer so that the maximum 
peaks reach no more than -2 dBm.

6. Now set the TX meter to "EQ". This allows you to view the level of 
your second audio stage. From the dropdown menus along the top left of 
the Power SDR interface, select "Equalizer" and position it on your 
desktop so that you can access the Transmit Equalizer easily. I would 
suggest that you enable the 10 band equalizer function at this time, if 
you have not already done so.

7. Observe the TX meter "EQ" level as you speak into the microphone and 
adjust the "Preamp" slider in the EQ interface so that your maximum 
peaks reach no more than -2 dBm.

8. Set the TX meter to Leveler. Open up the PSDR tab for DSP and go to 
the AGC/ALC settings page. As you transmit and speak into the mic, 
adjust the "Leveler" setting upward or downward from the default setting 
of 5 but make sure that peaks on the TX meter do not exceed 0 dBm. You 
can further adjust the attack/decay/hang times if the Leveler is not 
responding quickly enough, or if it seems slow to release. This is 
largely trial and er

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
> ___
> 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/
>
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Re: [Flexradio] TX Audio Chain

[Ken Buser]

Tim,
Just for clarification,   I meant that the Wizard would use the Operators 
voice for the test set up, not an external "Canned" voice,  for the purpose 
of setting the levels so they did not exceed -1 .  The Mic, leveler, ALC, 
etc then would be set automatically.   Once that is done the Eq could then 
be set if opted to do so  by the Operator.

Then saved as a TX Profile on their system.
The same could be run again for an other Microphone and then saved under a 
new TX Profile.


Thanks for the input also Tim

Ken   W9YNI

Subject: RE: [Flexradio] TX Audio Chain


The only problem with this is that every human voice has different spectral 
qualities, a "fingerprint" if you will, so the canned voice would sound good 
for only that canned voice in addition to the response characteristic for 
microphones.  Automatic "normalization" of gain via software at each stage 
is a straightforward and simple process.  EQing is a whole different beast. 
Yes, I can EQ my voice to a flat response, but I do not like the way it 
sounds.  I need to cut here and boost a little there to make it more 
communications friendly.


The software would have to have a lot more AI to do those types of things.

But please don't let my comment deter you from thinking outside the box and 
submitting enhancement requests.  Ideas are always good. Keep sharing.



-Tim


-Original Message-
From: Ken Buser [mailto:kenbu...@gmail.com]
Sent: Wednesday, May 11, 2011 10:52 AM
To: Tim Ellison; William H. Fite
Cc: flexradio@flex-radio.biz
Subject: Re: [Flexradio] TX Audio Chain

I have been following the thread on the Audio Adjustments, Setting, and 
procedures.

I am not opposed to going thru the drill,  I have many times in the past.
But it occured to me,  the alignment procedures the SDR Software goes thru 
when you hit (Shift, Ctl, P)

are nothing more than Amazing..So Now my Point.

Could there be an "Audio Wizard" button that could be selected.
It then would ask for a short audio sample to be spoken IE: "TEST TEST 
TESTING"
The Wizard would save the test audio from the Operators voice sample and 
then use it to run thru the Audio Chain, stage by stage and automatically 
set the levels for proper settings.  These could then be saved under a named 
TX Profile.

Then DX or Compander could be selected if needed.

I will submit an Enhancement Request, and hope for the best.
After all it is only a "SMOP"For non programmers that is a "Small Matter
Of Programming"   Hi Hi

Ken   W9YNI



Disclaimer: The following is my personal opinion and is not
necessarily the views of FlexRadio nor should you derive any future
expectations based on my comments.

Ideally, the "best" SDR software should not have a steep learning
curve unless you want it.  It is software and being so you can make it
smarter to use.  There should be two basic modes of operation; user and 
expert.

In User mode, things should be more "plug-and-play" like, where you
can get the radio operational with minimal effort and technical
knowledge of the underlying processes.  This is the mode of operation
for most pragmatist (I hate the phrase "appliance operator") who may
not have the desire to know, for example,  the "black art" of audio
stage balancing and engineering.  Then there is the Expert mode for
others who, like me, have a deep desire to "know" how the thing works
and need all the switches, buttons, sliders and knobs (along with the
all so necessary "reset to factory defaults" feature) to work with
that provides the insights to how the controls behave and why.

I think as Flexers, we have a wonderful and functional technical
hierarchy where complex  information gets passed down from the Gurus
(Gerald, Bob, BobT, Eric, Steve, etc..) to the more technical users
who have the innate ability to distil the complexities of SDR into
more understandable (aka "human readable") descriptions and
explanations.  All this without the inflated egos, ranting and dreadful 
discourse that plagues other hobbies.

Bill is right.  The entire community is vital to make our cutting edge
hobby enjoyable, which is the ultimate goal.


-Tim

From: William H. Fite [mailto:omni...@gmail.com]
Sent: Wednesday, May 11, 2011 9:40 AM
To: Tim Ellison
Cc: Mike; flexradio@flex-radio.biz
Subject: Re: [Flexradio] TX Audio Chain

I'm reminded of the line from Spiderman, "With great power comes great
responsibility."  As the power of SDR has emerged, we are finding that
we can do many more things to tweak and tune and modify our radios
than we ever could do with conventional knob radios.  But we are also
coming to understand that the learning curve is steeper and the tasks
are somewhat different than those our more conventional colleagues are 
facing.


That's why this community is so vital!  And the support from the Flex
guys so essential.




On Tue, May 10, 2011 at 8:52 PM, Tim Ellison
mailto:telli...@itsco.com>> wrote:
See the following:
http://kc.flexradio.com/KnowledgebaseArticle50478.aspx

T

Re: [Flexradio] TX Audio Chain

[W1AEX - Rob]

Hi Dave,

I would hesitate to give any advice on setting up VAC levels as I am a 
neophyte VAC user. I'm pretty sure from the description of the way you 
set yours up that you and I are doing the the same thing by using the 
GUI sliders in the PowerSDR front panel controls to set up the levels 
for digital TX and RX. I also keep the TX meter pretty much locked to 
the ALC position for every TX mode and use an external wattmeter for 
power output monitoring. Using the PowerSDR TX level slider for VAC to 
throttle back power on PSK to 5 or 10 watts results in very little 
activity on the ALC meter, and so far the signal reports from others 
sharing the waterfall have been squeaky clean. I'm sure many others here 
can detail the "best practices" for setting up the TX levels for digital 
modes with VAC.


73,

Rob W1AEX


On 5/11/2011 12:52 PM, Dave Beumer WØDHB wrote:

Rob

This is great stuff, Thanks.

I'm not clear on where VAC comes into the audio chain and which of these
adjustments would impact VAC audio input.

Per a prior knowledge base article, I've just been setting the drive to 100,
the meter to ALC and adjusting the TX Gain for a -3 reading.

Any advice on other adjustments for VAC/Digital ?

Dave
W0DHB



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[Flexradio] Flex-1500 and MixW 3.0.1b

[F5UL]

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] TX Audio Chain

[Dave Beumer WØDHB]

Rob

This is great stuff, Thanks.

I'm not clear on where VAC comes into the audio chain and which of these
adjustments would impact VAC audio input.

Per a prior knowledge base article, I've just been setting the drive to 100,
the meter to ALC and adjusting the TX Gain for a -3 reading.

Any advice on other adjustments for VAC/Digital ?

Dave
W0DHB

-Original Message-
From: flexradio-boun...@flex-radio.biz
[mailto:flexradio-boun...@flex-radio.biz] On Behalf Of W1AEX - Rob
Sent: Tuesday, May 10, 2011 1:17 PM
To: flexradio@flex-radio.biz
Subject: Re: [Flexradio] TX Audio Chain

Larry,

I emailed a step-by-step article to Neal today for consideration as a 
possible addition to the Flex Wiki. Most people do exactly what you and 
I did, plug in a mic, adjust the mic slider in the GUI, and run with it. 
The necessary information is spread throughout the manual, but as I 
recall, it's not all in one place. Besides, how many Flex users actually 
read the entire manual? What I came up with is pasted below.

73,

Rob W1AEX

--

Audio Gain Distribution Inside PowerSDR:

I have encountered lots of Flex/SDR users on the air who sound great in 
every voice mode. However, it’s not uncommon to hear stations who seem 
to have a lot of grit, distortion, and harshness in their audio in all 
the voice modes. As it turns out, many of these stations are completely 
unaware of the multi-function TX meter and how to use it to correctly 
set the audio gain distribution throughout the Power SDR audio chain. 
It’s not unusual to find that one of the stages is inadvertently running 
at maximum gain while another stage is set near the minimum to 
compensate. This can invoke strange events such as ringing in the audio, 
distortion, and aggressive ALC action with pumping and audio artifacts. 
I certainly don’t know everything there is to know about squeezing the 
most out of the audio functions in Power SDR, but I did find that 
balancing the gain from start to finish has brought very satisfactory 
results for me and a number of others who were becoming very frustrated. 
Pages 77 and 78 of the 2.x.x Power SDR manual "sort of" infer the 
information given below, but I have found that many users are completely 
unaware of any audio level settings beyond the front panel Mic slider. 
Hopefully the steps below will help someone to avoid a disappointing 
result when they start to transmit!

1. Connect the Flex to a 50 ohm dummy load and select one of the voice 
modes in Power SDR. Make sure that you have a TX profile selected that 
has your bandwidth set as you deem appropriate for the phone mode you 
are using.

2. If you have either the “DX” or “Compander” button selected on the 
front panel of Power SDR, unselect it now.

3. The “Mic” slider on the Power SDR front panel GUI is scaled from 0 to 
70. Place it at the mid-point value of 35.

4. In the upper right corner of the Power SDR interface use the TX 
dropdown in the meter to select "Mic”. This allows you to view the level 
of the first audio stage of your Flex.

5. From the dropdown menus along the top left edge of the Power SDR 
interface, select “Mixer” and position it on your desktop so you can 
access it easily. With the Flex connected to a dummy load, key the 
transceiver and speak into the microphone at the voice level you 
typically use on the air. Observe the TX meter “Mic” level and adjust 
your level up or down with the “Mic” input level slider (or the slider 
for whichever input you are using) in the Mixer so that the maximum 
peaks reach no more than –2 dBm.

6. Now set the TX meter to “EQ”. This allows you to view the level of 
your second audio stage. From the dropdown menus along the top left of 
the Power SDR interface, select “Equalizer” and position it on your 
desktop so that you can access the Transmit Equalizer easily. I would 
suggest that you enable the 10 band equalizer function at this time, if 
you have not already done so.

7. Observe the TX meter “EQ” level as you speak into the microphone and 
adjust the “Preamp” slider in the EQ interface so that your maximum 
peaks reach no more than –2 dBm.

8. Set the TX meter to Leveler. Open up the PSDR tab for DSP and go to 
the AGC/ALC settings page. As you transmit and speak into the mic, 
adjust the “Leveler” setting upward or downward from the default setting 
of 5 but make sure that peaks on the TX meter do not exceed 0 dBm. You 
can further adjust the attack/decay/hang times if the Leveler is not 
responding quickly enough, or if it seems slow to release. This is 
largely trial and error, but I found the default decay and hang times to 
be too long, and reducing them smoothed things so that there was no 
audible pumping or excessive periods of gain reduction. (Pages 156 - 157 
of the PowerSDR 2.x manual provide more details)

9. Set the TX meter to ALC. Open up the PSDR tab for DSP and go to the 
AGC/ALC settings page. Apply audio and observe that the maximum level of 
peaks does not ex

Re: [Flexradio] TX Audio Chain

[Tim Ellison]

The only problem with this is that every human voice has different spectral 
qualities, a "fingerprint" if you will, so the canned voice would sound good 
for only that canned voice in addition to the response characteristic for 
microphones.  Automatic "normalization" of gain via software at each stage is a 
straightforward and simple process.  EQing is a whole different beast.  Yes, I 
can EQ my voice to a flat response, but I do not like the way it sounds.  I 
need to cut here and boost a little there to make it more communications 
friendly.

The software would have to have a lot more AI to do those types of things.

But please don't let my comment deter you from thinking outside the box and 
submitting enhancement requests.  Ideas are always good. Keep sharing.


-Tim


-Original Message-
From: Ken Buser [mailto:kenbu...@gmail.com]
Sent: Wednesday, May 11, 2011 10:52 AM
To: Tim Ellison; William H. Fite
Cc: flexradio@flex-radio.biz
Subject: Re: [Flexradio] TX Audio Chain

I have been following the thread on the Audio Adjustments, Setting, and 
procedures.
I am not opposed to going thru the drill,  I have many times in the past.
But it occured to me,  the alignment procedures the SDR Software goes thru when 
you hit (Shift, Ctl, P)
are nothing more than Amazing..So Now my Point.

Could there be an "Audio Wizard" button that could be selected.
It then would ask for a short audio sample to be spoken IE: "TEST TEST TESTING"
The Wizard would save the test audio from the Operators voice sample and then 
use it to run thru the Audio Chain, stage by stage and automatically set the 
levels for proper settings.  These could then be saved under a named TX Profile.
Then DX or Compander could be selected if needed.

I will submit an Enhancement Request, and hope for the best.
After all it is only a "SMOP"For non programmers that is a "Small Matter
Of Programming"   Hi Hi

Ken   W9YNI


> Disclaimer: The following is my personal opinion and is not
> necessarily the views of FlexRadio nor should you derive any future
> expectations based on my comments.
>
> Ideally, the "best" SDR software should not have a steep learning
> curve unless you want it.  It is software and being so you can make it
> smarter to use.  There should be two basic modes of operation; user and 
> expert.
> In User mode, things should be more "plug-and-play" like, where you
> can get the radio operational with minimal effort and technical
> knowledge of the underlying processes.  This is the mode of operation
> for most pragmatist (I hate the phrase "appliance operator") who may
> not have the desire to know, for example,  the "black art" of audio
> stage balancing and engineering.  Then there is the Expert mode for
> others who, like me, have a deep desire to "know" how the thing works
> and need all the switches, buttons, sliders and knobs (along with the
> all so necessary "reset to factory defaults" feature) to work with
> that provides the insights to how the controls behave and why.
>
> I think as Flexers, we have a wonderful and functional technical
> hierarchy where complex  information gets passed down from the Gurus
> (Gerald, Bob, BobT, Eric, Steve, etc..) to the more technical users
> who have the innate ability to distil the complexities of SDR into
> more understandable (aka "human readable") descriptions and
> explanations.  All this without the inflated egos, ranting and dreadful 
> discourse that plagues other hobbies.
> Bill is right.  The entire community is vital to make our cutting edge
> hobby enjoyable, which is the ultimate goal.
>
>
> -Tim
>
> From: William H. Fite [mailto:omni...@gmail.com]
> Sent: Wednesday, May 11, 2011 9:40 AM
> To: Tim Ellison
> Cc: Mike; flexradio@flex-radio.biz
> Subject: Re: [Flexradio] TX Audio Chain
>
> I'm reminded of the line from Spiderman, "With great power comes great
> responsibility."  As the power of SDR has emerged, we are finding that
> we can do many more things to tweak and tune and modify our radios
> than we ever could do with conventional knob radios.  But we are also
> coming to understand that the learning curve is steeper and the tasks
> are somewhat different than those our more conventional colleagues are facing.
>
> That's why this community is so vital!  And the support from the Flex
> guys so essential.
>
>
>
>
> On Tue, May 10, 2011 at 8:52 PM, Tim Ellison
> mailto:telli...@itsco.com>> wrote:
> See the following:
> http://kc.flexradio.com/KnowledgebaseArticle50478.aspx
>
> The Mixer gain is essentially  the input gain control for the codec.
> I have done a lot of experimentation with it and this is what I think
> sounds best, but the difference is almost imperceptible.  I use
> outboard audio hardware (channel strip) ,making sure that I generate
> most of the AF gain using the class A mic preamp (tube).  By doing so,
> I ensure that I will have a good clean high SNR source signal.  Making
> up gain later in the audio chain degrades SNR.  As Rob indica

Re: [Flexradio] TX Audio Chain

[Ross Stenberg]

Tim, have you considered running as an elected public official :^)
Most people are far more enamored with their own voices than the rest of 
us are.


73 Ross K9COX

On 5/11/2011 9:30 AM, Tim Ellison wrote:

Disclaimer: The following is my personal opinion and is not  necessarily the 
views of FlexRadio nor should you derive any future expectations based on my 
comments.

Ideally, the "best" SDR software should not have a steep learning curve unless you want it.  It is software and being so you can 
make it smarter to use.  There should be two basic modes of operation; user and expert.  In User mode, things should be more 
"plug-and-play" like, where you can get the radio operational with minimal effort and technical knowledge of the underlying 
processes.  This is the mode of operation for most pragmatist (I hate the phrase "appliance operator") who may not have the 
desire to know, for example,  the "black art" of audio stage balancing and engineering.  Then there is the Expert mode for others 
who, like me, have a deep desire to "know" how the thing works and need all the switches, buttons, sliders and knobs (along with 
the all so necessary "reset to factory defaults" feature) to work with that provides the insights to how the controls behave and 
why.

I think as Flexers, we have a wonderful and functional technical hierarchy where complex  
information gets passed down from the Gurus (Gerald, Bob, BobT, Eric, Steve, etc..) to 
the more technical users who have the innate ability to distil the complexities of SDR 
into more understandable (aka "human readable") descriptions and explanations.  
All this without the inflated egos, ranting and dreadful discourse that plagues other 
hobbies.  Bill is right.  The entire community is vital to make our cutting edge hobby 
enjoyable, which is the ultimate goal.


-Tim



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[Flexradio] still looking

[paul glassman]

Hi all,    I am still looking for a 5000A. I have a flawless mint "as new" 
Tentec Omni VII loaded for trade or will buy straight up.                       
                               Regards  Paul w8jn
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Re: [Flexradio] TX Audio Chain

[William H. Fite]

I concur with every word you wrote, Tim.

Let us never draw our examples of behavior either from the eHam forums
(bitterness, nastiness, meanspiritedness) or from the forums of that other
popular little radio* (extreme fanboisim).

Bill

*Which is not to say that it isn't a good radio.  But it isn't a Flex.



On Wed, May 11, 2011 at 10:30 AM, Tim Ellison  wrote:

>  Disclaimer: The following is my personal opinion and is not  necessarily
> the views of FlexRadio nor should you derive any future expectations based
> on my comments.
>
>
>
> Ideally, the “best” SDR software should not have a steep learning curve
> unless you want it.  It is software and being so you can make it smarter to
> use.  There should be two basic modes of operation; user and expert.  In
> User mode, things should be more “plug-and-play” like, where you can get the
> radio operational with minimal effort and technical knowledge of the
> underlying processes.  This is the mode of operation for most pragmatist (I
> hate the phrase “appliance operator”) who may not have the desire to know,
> for example,  the “black art” of audio stage balancing and engineering.
> Then there is the Expert mode for others who, like me, have a deep desire to
> “know” how the thing works and need all the switches, buttons, sliders and
> knobs (along with the all so necessary “reset to factory defaults” feature)
> to work with that provides the insights to how the controls behave and why.
>
>
>
> I think as Flexers, we have a wonderful and functional technical hierarchy
> where complex  information gets passed down from the Gurus (Gerald, Bob,
> BobT, Eric, Steve, etc..) to the more technical users who have the innate
> ability to distil the complexities of SDR into more understandable (aka
> “human readable”) descriptions and explanations.  All this without the
> inflated egos, ranting and dreadful discourse that plagues other hobbies.
> Bill is right.  The entire community is vital to make our cutting edge hobby
> enjoyable, which is the ultimate goal.
>
>
>
>
>
> -Tim
>
>
>
> *From:* William H. Fite [mailto:omni...@gmail.com]
> *Sent:* Wednesday, May 11, 2011 9:40 AM
> *To:* Tim Ellison
> *Cc:* Mike; flexradio@flex-radio.biz
>
> *Subject:* Re: [Flexradio] TX Audio Chain
>
>
>
> I'm reminded of the line from Spiderman, "With great power comes great
> responsibility."  As the power of SDR has emerged, we are finding that we
> can do many more things to tweak and tune and modify our radios than we ever
> could do with conventional knob radios.  But we are also coming to
> understand that the learning curve is steeper and the tasks are somewhat
> different than those our more conventional colleagues are facing.
>
>
>
> That's why this community is so vital!  And the support from the Flex guys
> so essential.
>
>
>
>
>
>
>
> On Tue, May 10, 2011 at 8:52 PM, Tim Ellison  wrote:
>
> See the following:
> http://kc.flexradio.com/KnowledgebaseArticle50478.aspx
>
> The Mixer gain is essentially  the input gain control for the codec.  I
> have done a lot of experimentation with it and this is what I think sounds
> best, but the difference is almost imperceptible.  I use outboard audio
> hardware (channel strip) ,making sure that I generate most of the AF gain
> using the class A mic preamp (tube).  By doing so, I ensure that I will have
> a good clean high SNR source signal.  Making up gain later in the audio
> chain degrades SNR.  As Rob indicated, I arbitrarily set the MIC GAIN to a
> mid-value, like 35 so I have some headroom to work with.  I then adjust the
> MIXER GAIN so that I am not over driving the codec input which would degrade
> the SNR.  For my setup, the MIXER GAIN is at ~30% of scale.  Like I
> indicated, I have used lower MIC GAIN with higher MIXER GAIN (and
> vice-a-versa) and I really can't tell a lot of difference.  Methinks having
> a lower MIXER GAIN setting sounds cleaner.
>
> Ideally, I'd like to see what the actual input signal is coming from the
> mic or outboard equipment so I could match the output and inputs properly
>  and not overdrive (exceed O dB) that AF  input first stage.  As noted the
> key is to never over drive a single stage because that degrade your SNR.
>
> One thing to make sure you pay attention to.  You really need to listen to
> yourself in a 2nd receiver over the air.  Most "legacy" radios have narrow
> RX filters (~2.9K) and listing to yourself in the monitor (wide band) can
> mislead you into what others are hearing.  Since I have two FLEX SDRs, I
> make sure I match the RX filter width to the TX filter width when adjusting
> the EQ.  I adjust using several TX filter widths; 2.6K (DX/contest), 3.0k
> (SSB), 4.0K (ESSB) 5K (AM) and 8K (FM).  Start wide (FM) and work your way
> down.  If you EQ correctly, what sounds *really* good at 8K should sound
> good at 3.0K and 2.6K should have good communication clarity
> characteristics.
>
>
> -Tim
>
>
>
> -Original Message-
> From: flexradio-boun...@flex-radio.biz [mail

Re: [Flexradio] TX Audio Chain

[Ken Buser]

I have been following the thread on the Audio Adjustments, Setting, and 
procedures.

I am not opposed to going thru the drill,  I have many times in the past.
But it occured to me,  the alignment procedures the SDR Software goes thru 
when you hit (Shift, Ctl, P)

are nothing more than Amazing..So Now my Point.

Could there be an "Audio Wizard" button that could be selected.
It then would ask for a short audio sample to be spoken IE: "TEST TEST 
TESTING"
The Wizard would save the test audio from the Operators voice sample and 
then use it to run thru the Audio Chain, stage by stage and automatically 
set the levels for proper settings.  These could then be saved under a named 
TX Profile.

Then DX or Compander could be selected if needed.

I will submit an Enhancement Request, and hope for the best.
After all it is only a "SMOP"For non programmers that is a "Small Matter 
Of Programming"   Hi Hi


Ken   W9YNI


Disclaimer: The following is my personal opinion and is not  necessarily 
the views of FlexRadio nor should you derive any future expectations based 
on my comments.


Ideally, the "best" SDR software should not have a steep learning curve 
unless you want it.  It is software and being so you can make it smarter 
to use.  There should be two basic modes of operation; user and expert. 
In User mode, things should be more "plug-and-play" like, where you can 
get the radio operational with minimal effort and technical knowledge of 
the underlying processes.  This is the mode of operation for most 
pragmatist (I hate the phrase "appliance operator") who may not have the 
desire to know, for example,  the "black art" of audio stage balancing and 
engineering.  Then there is the Expert mode for others who, like me, have 
a deep desire to "know" how the thing works and need all the switches, 
buttons, sliders and knobs (along with the all so necessary "reset to 
factory defaults" feature) to work with that provides the insights to how 
the controls behave and why.


I think as Flexers, we have a wonderful and functional technical hierarchy 
where complex  information gets passed down from the Gurus (Gerald, Bob, 
BobT, Eric, Steve, etc..) to the more technical users who have the innate 
ability to distil the complexities of SDR into more understandable (aka 
"human readable") descriptions and explanations.  All this without the 
inflated egos, ranting and dreadful discourse that plagues other hobbies. 
Bill is right.  The entire community is vital to make our cutting edge 
hobby enjoyable, which is the ultimate goal.



-Tim

From: William H. Fite [mailto:omni...@gmail.com]
Sent: Wednesday, May 11, 2011 9:40 AM
To: Tim Ellison
Cc: Mike; flexradio@flex-radio.biz
Subject: Re: [Flexradio] TX Audio Chain

I'm reminded of the line from Spiderman, "With great power comes great 
responsibility."  As the power of SDR has emerged, we are finding that we 
can do many more things to tweak and tune and modify our radios than we 
ever could do with conventional knob radios.  But we are also coming to 
understand that the learning curve is steeper and the tasks are somewhat 
different than those our more conventional colleagues are facing.


That's why this community is so vital!  And the support from the Flex guys 
so essential.





On Tue, May 10, 2011 at 8:52 PM, Tim Ellison 
mailto:telli...@itsco.com>> wrote:

See the following:
http://kc.flexradio.com/KnowledgebaseArticle50478.aspx

The Mixer gain is essentially  the input gain control for the codec.  I 
have done a lot of experimentation with it and this is what I think sounds 
best, but the difference is almost imperceptible.  I use outboard audio 
hardware (channel strip) ,making sure that I generate most of the AF gain 
using the class A mic preamp (tube).  By doing so, I ensure that I will 
have a good clean high SNR source signal.  Making up gain later in the 
audio chain degrades SNR.  As Rob indicated, I arbitrarily set the MIC 
GAIN to a mid-value, like 35 so I have some headroom to work with.  I then 
adjust the MIXER GAIN so that I am not over driving the codec input which 
would degrade the SNR.  For my setup, the MIXER GAIN is at ~30% of scale. 
Like I indicated, I have used lower MIC GAIN with higher MIXER GAIN (and 
vice-a-versa) and I really can't tell a lot of difference.  Methinks 
having a lower MIXER GAIN setting sounds cleaner.


Ideally, I'd like to see what the actual input signal is coming from the 
mic or outboard equipment so I could match the output and inputs properly 
and not overdrive (exceed O dB) that AF  input first stage.  As noted the 
key is to never over drive a single stage because that degrade your SNR.


One thing to make sure you pay attention to.  You really need to listen to 
yourself in a 2nd receiver over the air.  Most "legacy" radios have narrow 
RX filters (~2.9K) and listing to yourself in the monitor (wide band) can 
mislead you into what others are hearing.  Since I have two FLEX SDRs, I 
make sure I 

Re: [Flexradio] TX Audio Chain

[Tim Ellison]

Disclaimer: The following is my personal opinion and is not  necessarily the 
views of FlexRadio nor should you derive any future expectations based on my 
comments.

Ideally, the "best" SDR software should not have a steep learning curve unless 
you want it.  It is software and being so you can make it smarter to use.  
There should be two basic modes of operation; user and expert.  In User mode, 
things should be more "plug-and-play" like, where you can get the radio 
operational with minimal effort and technical knowledge of the underlying 
processes.  This is the mode of operation for most pragmatist (I hate the 
phrase "appliance operator") who may not have the desire to know, for example,  
the "black art" of audio stage balancing and engineering.  Then there is the 
Expert mode for others who, like me, have a deep desire to "know" how the thing 
works and need all the switches, buttons, sliders and knobs (along with the all 
so necessary "reset to factory defaults" feature) to work with that provides 
the insights to how the controls behave and why.

I think as Flexers, we have a wonderful and functional technical hierarchy 
where complex  information gets passed down from the Gurus (Gerald, Bob, BobT, 
Eric, Steve, etc..) to the more technical users who have the innate ability to 
distil the complexities of SDR into more understandable (aka "human readable") 
descriptions and explanations.  All this without the inflated egos, ranting and 
dreadful discourse that plagues other hobbies.  Bill is right.  The entire 
community is vital to make our cutting edge hobby enjoyable, which is the 
ultimate goal.


-Tim

From: William H. Fite [mailto:omni...@gmail.com]
Sent: Wednesday, May 11, 2011 9:40 AM
To: Tim Ellison
Cc: Mike; flexradio@flex-radio.biz
Subject: Re: [Flexradio] TX Audio Chain

I'm reminded of the line from Spiderman, "With great power comes great 
responsibility."  As the power of SDR has emerged, we are finding that we can 
do many more things to tweak and tune and modify our radios than we ever could 
do with conventional knob radios.  But we are also coming to understand that 
the learning curve is steeper and the tasks are somewhat different than those 
our more conventional colleagues are facing.

That's why this community is so vital!  And the support from the Flex guys so 
essential.




On Tue, May 10, 2011 at 8:52 PM, Tim Ellison 
mailto:telli...@itsco.com>> wrote:
See the following:
http://kc.flexradio.com/KnowledgebaseArticle50478.aspx

The Mixer gain is essentially  the input gain control for the codec.  I have 
done a lot of experimentation with it and this is what I think sounds best, but 
the difference is almost imperceptible.  I use outboard audio hardware (channel 
strip) ,making sure that I generate most of the AF gain using the class A mic 
preamp (tube).  By doing so, I ensure that I will have a good clean high SNR 
source signal.  Making up gain later in the audio chain degrades SNR.  As Rob 
indicated, I arbitrarily set the MIC GAIN to a mid-value, like 35 so I have 
some headroom to work with.  I then adjust the MIXER GAIN so that I am not over 
driving the codec input which would degrade the SNR.  For my setup, the MIXER 
GAIN is at ~30% of scale.  Like I indicated, I have used lower MIC GAIN with 
higher MIXER GAIN (and vice-a-versa) and I really can't tell a lot of 
difference.  Methinks having a lower MIXER GAIN setting sounds cleaner.

Ideally, I'd like to see what the actual input signal is coming from the mic or 
outboard equipment so I could match the output and inputs properly  and not 
overdrive (exceed O dB) that AF  input first stage.  As noted the key is to 
never over drive a single stage because that degrade your SNR.

One thing to make sure you pay attention to.  You really need to listen to 
yourself in a 2nd receiver over the air.  Most "legacy" radios have narrow RX 
filters (~2.9K) and listing to yourself in the monitor (wide band) can mislead 
you into what others are hearing.  Since I have two FLEX SDRs, I make sure I 
match the RX filter width to the TX filter width when adjusting the EQ.  I 
adjust using several TX filter widths; 2.6K (DX/contest), 3.0k (SSB), 4.0K 
(ESSB) 5K (AM) and 8K (FM).  Start wide (FM) and work your way down.  If you EQ 
correctly, what sounds *really* good at 8K should sound good at 3.0K and 2.6K 
should have good communication clarity characteristics.


-Tim


-Original Message-
From: flexradio-boun...@flex-radio.biz 
[mailto:flexradio-boun...@flex-radio.biz]
 On Behalf Of Mike
Sent: Tuesday, May 10, 2011 7:38 PM
To: flexradio@flex-radio.biz
Subject: Re: [Flexradio] TX Audio Chain

Is the Mixer dropdown in the console the very first gain stage in the Flex5000A 
and if so, what is the decending order of variables...does it follow in 
sequence with the TX Meter dropdown settings?
[Mixer], MIC, EQ p

Re: [Flexradio] TX Audio Chain

[William H. Fite]

I'm reminded of the line from Spiderman, "With great power comes great
responsibility."  As the power of SDR has emerged, we are finding that we
can do many more things to tweak and tune and modify our radios than we ever
could do with conventional knob radios.  But we are also coming to
understand that the learning curve is steeper and the tasks are somewhat
different than those our more conventional colleagues are facing.

That's why this community is so vital!  And the support from the Flex guys
so essential.




On Tue, May 10, 2011 at 8:52 PM, Tim Ellison  wrote:

> See the following:
> http://kc.flexradio.com/KnowledgebaseArticle50478.aspx
>
> The Mixer gain is essentially  the input gain control for the codec.  I
> have done a lot of experimentation with it and this is what I think sounds
> best, but the difference is almost imperceptible.  I use outboard audio
> hardware (channel strip) ,making sure that I generate most of the AF gain
> using the class A mic preamp (tube).  By doing so, I ensure that I will have
> a good clean high SNR source signal.  Making up gain later in the audio
> chain degrades SNR.  As Rob indicated, I arbitrarily set the MIC GAIN to a
> mid-value, like 35 so I have some headroom to work with.  I then adjust the
> MIXER GAIN so that I am not over driving the codec input which would degrade
> the SNR.  For my setup, the MIXER GAIN is at ~30% of scale.  Like I
> indicated, I have used lower MIC GAIN with higher MIXER GAIN (and
> vice-a-versa) and I really can't tell a lot of difference.  Methinks having
> a lower MIXER GAIN setting sounds cleaner.
>
> Ideally, I'd like to see what the actual input signal is coming from the
> mic or outboard equipment so I could match the output and inputs properly
>  and not overdrive (exceed O dB) that AF  input first stage.  As noted the
> key is to never over drive a single stage because that degrade your SNR.
>
> One thing to make sure you pay attention to.  You really need to listen to
> yourself in a 2nd receiver over the air.  Most "legacy" radios have narrow
> RX filters (~2.9K) and listing to yourself in the monitor (wide band) can
> mislead you into what others are hearing.  Since I have two FLEX SDRs, I
> make sure I match the RX filter width to the TX filter width when adjusting
> the EQ.  I adjust using several TX filter widths; 2.6K (DX/contest), 3.0k
> (SSB), 4.0K (ESSB) 5K (AM) and 8K (FM).  Start wide (FM) and work your way
> down.  If you EQ correctly, what sounds *really* good at 8K should sound
> good at 3.0K and 2.6K should have good communication clarity
> characteristics.
>
>
> -Tim
>
>
> -Original Message-
> From: flexradio-boun...@flex-radio.biz [mailto:
> flexradio-boun...@flex-radio.biz] On Behalf Of Mike
> Sent: Tuesday, May 10, 2011 7:38 PM
> To: flexradio@flex-radio.biz
>  Subject: Re: [Flexradio] TX Audio Chain
>
> Is the Mixer dropdown in the console the very first gain stage in the
> Flex5000A and if so, what is the decending order of variables...does it
> follow in sequence with the TX Meter dropdown settings?
> [Mixer], MIC, EQ preamp, Leveler, CPDR/DX button?
>
> 73
> Mike, K4EAR
>
> -Original Message-
> From: flexradio-boun...@flex-radio.biz
> [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Larry Otto
> Sent: Tuesday, May 10, 2011 5:37 PM
> To: W1AEX - Rob; flexradio@flex-radio.biz
> Subject: Re: [Flexradio] TX Audio Chain
>
> Thanks Rob -
>
> Very well written.
>
> Are Flex folks great, or what?
>
> 73
> Larry
>
>
> - Original Message -
> From: "W1AEX - Rob" 
> To: 
> Sent: Tuesday, May 10, 2011 3:16 PM
> Subject: Re: [Flexradio] TX Audio Chain
>
>
> Larry,
>
> I emailed a step-by-step article to Neal today for consideration as a
> possible addition to the Flex Wiki. Most people do exactly what you and I
> did, plug in a mic, adjust the mic slider in the GUI, and run with it.
> The necessary information is spread throughout the manual, but as I recall,
> it's not all in one place. Besides, how many Flex users actually read the
> entire manual? What I came up with is pasted below.
>
> 73,
>
> Rob W1AEX
>
> --
>
> Audio Gain Distribution Inside PowerSDR:
>
> I have encountered lots of Flex/SDR users on the air who sound great in
> every voice mode. However, it's not uncommon to hear stations who seem to
> have a lot of grit, distortion, and harshness in their audio in all the
> voice modes. As it turns out, many of these stations are completely unaware
> of the multi-function TX meter and how to use it to correctly set the audio
> gain distribution throughout the Power SDR audio chain.
> It's not unusual to find that one of the stages is inadvertently running at
> maximum gain while another stage is set near the minimum to compensate. This
> can invoke strange events such as ringing in the audio, distortion, and
> aggressive ALC action with pumping and audio artifacts.
> I certainly don't know everything there is to know about squeezing the most
> out of the au

Re: [Flexradio] Flexradio Google Theme

[William H. Fite]

Bill said:

 ---
> Watch where you point that thing, Tom said carefully.
> ---
>
To which other Bill replied:

"I don't have any kings, queens, or jacks," said Tom, tenaciously.
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