[Flexradio] CW Skimmer 1.2

[Ed Russell]

News from Alex, VE3NEA

--- Forwarded message follows ---

CW Skimmer 1.2 has been released. New in this version:

- support of QuickSilver QS1R radio;
- callsign validation;
- bug fixes.

The upgrade is free for all registered users.

73 Alex VE3NEA

__,_._,___ 
--- End of forwarded message ---


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[Flexradio] w2rf rx2 branch update

[Ed Russell]

The SVN branch w2rf/rx2/bin/release has been updated as follows.

New:

A "Disable UI Grey-out" checkbox has been added to the Transmit tab.
This significantly reduces CPU load for breakin CW.

All changes to the test branch to date have been merged. This
includes the missing RTTY offset feature.

Other features not in test branch:

Direct I/Q output for RX2 (VAC tab)

SpaceNavigator support (Navigation tab)

CW latency and turnaround improvements for both TRX and RX2 (DttSP)

Please let me know of any problems as I will be on vacation starting 
Tuesday.

Enjoy!

73 Ed W2RF








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[Flexradio] PowerSDR and CW Skimmer on the same PC

[Ed Russell]

Due to heavy processor load when running PowerSDR and CW Skimmer on 
the same machine, truncation of transmitted CW elements can occur. 
The result can be seen on a scope or heard by monitoring on a second 
receiver for keyclicks. This can be greatly improved by setting task 
priority and processor affinity.

The most important setting is process priority for PowerSDR. The 
default is Normal. Set this to High or Real Time.

If the CPU usage approaches 100% while transmitting, there could 
still be element truncation. In this case a multi-core computer can 
run CW Skimmer and PowerSDR in separate cores by setting affinity.

In my quad core configuration the best performance is with PowerSDR 
set to Real Time, with processor affinity for cores 1-3. CW Skimmer 
is set to Normal, with processor affinity for core 4.

This technique will probably be useful for other combinations of 
applications.

To temporarily set priority and affinity for a running process, right 
click the process name in the Task Manager process tab.

To permanently set priority and affinity, use the Windows 
Imagecfg.exe utility. This can be found on distribution media or by 
Googling.

73 Ed W2RF


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Re: [Flexradio] Just asking

[Ed Russell]

Dave,

The best way to do that at the moment is to use the pan sliders. Put 
rx1 all the way to the left, and rx2 to the right.

Then you need to route the audio back into the computer. This can be 
done from the power speaker out. Perhaps a bit inconvenient, but this 
approach does have lower latency than VAC.

I think VAC should support mixing of RX2, as you suggested. This 
shouldn't be too difficult.

I am also looking at having two direct i/q VAC output channels, one 
for each rx. This is not quite so easy.

73 Ed W2RF

On 13 Jun 2008 at 14:05, Dave Blaschke wrote:

Before I hit the Flex bug and request boards, I have a  question.

Can the RX2 audio be split away from the RX1 audio and brought out 
separately, like to a new pair of VAC's, or to the LINE OUT on the 
back of the radio?

Apparently, RX2's audio does not show up on the VAC when choosing 
VAC1 for input and VAC for output, even if I go and check the combine 

VAC channels checkbox, and/or check the combine to VAC checkbox. 
Anyone having any luck with this.

My goal is to use RX1 AND RX2 to be seen by WSJT using VAC's. The 
ideal here will be to run two instances of WSJT and using two pairs 
of VAC's, let the first pair connect RX1 to the 1'st instance of 
WSJT, and the second pair of VAC's to connect to the second instance 
of WSJT.

I realize this last item will require a revision to PowerSDR to 
separate the two audio channels. I see no way to do that at this 
time. Is there any hope of ever having this capability, you Flex 
software gurus?

Dave, W5UN


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[Flexradio] new w2rf/rx2 branch

[Ed Russell]

I've started a new branch for experimenting with rx2. You can find it 
at SVN branches/w2rf/rx2/bin/release.

So far I've added SpaceNav with VFO switching, my current QSK work, 
and an option for rx2 direct i/q output.

To use rx2 with Skimmer CAT control you need an OmniRig config file 
which reverses the VFOs. I have put one at

http://www.ehr.net/w2rf/download/PowerRX2.ini

That needs to go in the OmniRig/Rigs directory.

73 Ed W2RF


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Re: [Flexradio] The inherent muddiness of typical amateurtransceiver

[Ed Russell]

I've been following this thread and have to attest that Bill's 
suggestions work. But why?

As a test I put the Flex in USB at 8khz bandwidth. I limited the 
response of my RE27 also to 8Khz. I listened to the raw audio from 
the mic and it sounded great. I passed it through the 5k and it 
sounded muddy. I then passed it through a 950SDX and it also sounded 
muddy.

Next I applied TX equalization, which follows Bill's technique. Both 
radios sounded great.

So my result is that TX equalization works, but why is it needed? And 
this is not true just for the Flex. It is true for basically any 
radio you test with. Finally, it does not depend on the TX bandwidth, 
because even when I have the Flex open to 8khz, the muddiness is 
still there.

I hope someone out there can explain this enduring mystery.

73 Ed W2RF

On 3 Jun 2008 at 18:21, Bill Winkis wrote:

> Wow ...  this discussion should be simulcast on the Enhanced SSB 
> reflector...
> 
> Well, one of the approaches to kill the muddiness, is a technique that has 
> been employed in recording/broadcasting over the years..
> 
> 1.- There is a magic spot in everybody's voice that will increase clarity 
> and pull down the lo-mid darkness (Muddiness)  ... its different in 
> everybody's voice but can be found around 160 Hz .. use a narrow "Q" and an 
> amplitude reduction of 6-8-10 dB. Throttle around 160 till you find your own 
> personal spot.(mine is at 148)
> 
> 2.- To increase the clarity, add 6-8-109 dB at 3730 Hz, now its not the 3720 
> we are concerned with ...  its the magic 2d harmonic at 1865, with a long 
> "Q". (You want clarity..here it is..!!)
> 
> 3.- Now put a low end cut of 10 dB beginning at 65 Hz  going down and a 
> 6-8-12 dB high end cut at 3200 Hz  going up.
> 
> 4.- As a option for polish and fullness add 3-6 dB at 80 Hz with a sharp 
> "Q"... and throttle for the sweet spot
> 
> You would be surprised a the number of studio voices this trick of 160 and a 
> 3720 harmonic saved from the cutting floor
> 
> -Bill
> [EMAIL PROTECTED]
> 
> http://www.kc4pe.com/amateurshack.htm
> 
> 
> - Original Message - 
> From: "Ahti Aintila" <[EMAIL PROTECTED]>
> To: "Jeff Anderson" <[EMAIL PROTECTED]>
> Cc: 
> Sent: Tuesday, June 03, 2008 5:37 PM
> Subject: Re: [Flexradio] The inherent muddiness of typical 
> amateurtransceiver
> 
> 
>  On 6/3/08, Brian C <[EMAIL PROTECTED]> wrote:>
> 
> > That said, everyone knows wider bandwidths should not be employed on 
> > very crowded amateur bands, nonetheless, the key to intelligibility 
> > and fidelity is  b a n d w i d t h.
> >
> > Hi all,
> > Actually, IARU recommends max. bandwidth of 2700 Hz on ham bands below
> > 28 MHz. If you obey the rules and don't want to drown the information
> > content of your transmission into the mud, you better equalize your
> > signal in a smart way. I apologize for referring again to these two
> > old and good articles that every phone (SSB) operator should read and
> > understand:
> > http://kotisivu.dnainternet.net/ahti/sdr-1000/filtclip.pdf
> > http://kotisivu.dnainternet.net/ahti/sdr-1000/speechproc.pdf
> >
> > Of course those articles discuss analog signal processing, but the
> > same ideas apply to the DSP radios as well - actually much better.
> > Study the TX equalizer and compressor setup possibilities of PowerSDR
> > of Flex and K3 of Elecraft. It is really a pity that the both
> > manufacturers have not given any recommended (default) SSB equalizer
> > settings along the principles discussed in the given articles.
> >
> > Ahti OH2RZ
> >
> > > ___
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> >>
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Re: [Flexradio] Direct I/Q output for CW Skimmer

[Ed Russell]

Hi Mark,

If VAC output is set up properly Skimmer will process the entire 
sampled spectrum of 48, 96, or 192khz. There is no need to do any 
special filter setup.

The demod audio continues as normal. For example, while I am 
processing 96khz of spectrum into Skimmer, I am running PowerSDR with 
200hz filters.

Some users are confused because Skimmer only shows 10-12khz of 
bandwidth on the waterfall, depending on how tall your display is. If 
you look at the spot list, you will see that it is reading stations 
in the whole  sampled bandwidth. If you scroll up and down, you will 
see their callsigns by the waterfall.

Hope this helps. Let me know if you have further problems or 
questions.

73 Ed W2RF

On 24 May 2008 at 8:42, Mark Amos wrote:

> Ed W2RF
> 
> Thanks for building in the VAC I/Q output into your branch!  I've been using
> it this morning, and it's really fun 
> to watch the contest in progress.
> 
> In order to use it I had to make some changes to the the CW Pitch and Audio
> IF in CW Skimmer (version 1.1) to get the display to line up with PowerSDR's
> panadapter. (Setting them both to 600 seemed to do the trick.)
> 
> I used CWU and set the filter to max (0 to hz) in order to maximize the
> signal that's sent to CW skimmer.  Its 
> probably a misconception on my part, but I thought that sending raw I/Q to
> CW Skimmer would have bypassed the 
> filter settings, etc. and sent the entire 96K bandwidth to CW Skimmer for
> decoding.
> 
> Is  Hz the maximum window I can send to CW Skimmer?  Or is there some
> other setting that I'm missing? (I 
> tried "SPEC" mode on PowerSDr, but none of the CW signals were readable in
> CW Skimmer).
> 
> Mark
> W8XR
> 
>  <
><
>   <
> <73 Ed W2RF
> 
> 
> 
> 
> 
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Re: [Flexradio] CW Skimmer malfunction

[Ed Russell]

Hi Dave,

I just double checked Skimmer with the latest build in the w2rf 
branch and everything seems to be functioning normally. Please send 
any additional details.

73 Ed W2RF

On 14 May 2008 at 22:22, Dave Blaschke wrote:

> CW Skimmer was perking along just fine, but no longer. Now the 
> signals are not where they should be on the waterfall. The waterfall 
> is bright on bottom half the screen, and dark on the top half. I have 
> changed nothing, but something must have changed somewhere, either in 
> W2RF's PowerSDR or in the Skimmer setup. Anyone here able to help me?
> 
> Adjusting the Audio IF, hz does not get me anywhere. I have Skimmer 
> configured fpr SoftRock IF mode, of course.
> 
> Is there any place on the web where CW Skimmer-PowerSDR setup 
> parameters can be viewed?
> 
> Dave, W5UN
> 
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Re: [Flexradio] New w2rf QSK mods now available

[Ed Russell]

Jerry has brought up an important point. We CW ops believe true QSK 
means hearing between dots at high speed. I thought so myself until I 
began looking closely at the performance of box-based rigs.

There is an easy calculation that shows why true QSK is difficult:

R/T + T/R - ES = Band Sound

where 

R/T is time it takes to mute receiver and begin transmitting
T/R is time it takes to stop transmitting and fully activate 
receiving
ES is element spacing


ES is 30ms at 40wpm
ES is 40ms at 30wpm
ES is 60ms at 20wpm

Hit the key. It takes about 10-15ms to get a waveform started. 
Release the key. It takes about 15-20ms minimum for T/R turnaround; 
most rigs take 30 or more. That means in the best possible case R/T 
plus T/R turnaround takes 25ms.

I measured the response of my 950SDX:
R/T = 13ms
T/R = 19ms

That means no Band Sound at 40wpm. I measure 10ms of Band Sound at 
30wpm, but subjectively that isn't enough to call useful.

The 950SDX is an old radio, you might say. But if you look at the 
ARRL reviews the numbers are equal to or better than newer rigs. So, 
what is the rig that can really do QSK? The K3? Maybe, but it's a DSP 
rig too.

Send me a tape :)

73 Ed W2RF

On 14 May 2008 at 11:59, Jerry Flanders wrote:

> Thanks, Ed. BTW, what you describe as QSK is usually referred to as 
> "semi break in", or "Semi QSK" by CW ops. There is a world of difference.
> 
> For the guys and gals out there who may not understand the 
> distinction, CW ops refer to QSK as the ability to actually hear 
> activity on the band between dits at a reasonable speed. Modern 
> radios that actually do true QSK can do it at 30-50 WPM.
> 
> I look forward to purchasing another 5000a (first was sent back for 
> poor CW performance) if and when new software actually allows it to 
> perform to this standard. I am pretty sure the 5000a hardware will 
> allow this, but the following quote from Frank Brickel's  April 26 
> post in the then-current "CW QSK ability" thread eliminated my hope 
> that the current PowerSDR could _ever_ provide QSK: "I think this 
> line of discussion has run its course of usefulness. Development 
> effort is being focused on doing it right, not patching the current 
> system, which is basically unfixable in a systematic and maintainable way. "
> 
> If I understand Frank correctly, we will not see what CW ops call QSK 
> in PowerSDR/Windows. Ever.
> 
> Jerry W4UK
> 
> At 07:34 AM 5/14/2008, Ed Russell wrote:
> >Hi Jerry,
> >
> >It's a 5k. I don't think they apply to the 1k without a little
> >coding.
> >
> >73 Ed W2RF
> >
> >On 13 May 2008 at 22:14, Jerry Flanders wrote:
> >
> > > What radio are you using, Ed?
> > >
> > > Jerry W4UK
> > >
> > > At 07:29 PM 5/13/2008, Ed Russell wrote:
> > > >I thought I was finished with PwrSDR QSK a couple of days ago, but
> > > >then I had a few more thoughts...
> > > >
> > > >There is a new version in the SVN branch w2rf\bin\release
> > > >
> > > >My favorite settings are DSP 4096/256 at 96Khz/512. What are yours?
> > > >
> > > >I honestly think that these latest changes take QSK about as far as
> > > >it can go with the current architecture. Hopefully, someone will
> > > >prove me wrong :)
> > > >
> > > >73 Ed W2RF
> 




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Re: [Flexradio] New w2rf QSK mods now available

[Ed Russell]

There have been a couple of problem reports with the latest QSK mods. 

I considered reverting to the previous method, but decided to stay 
with then new way for two reasons:

I can't figure how the problems reported relate to the QSK changes. 
And even if they do the way forward is with the new code.

If you encounter probs with SVN 2200, try reverting to 2191. If it 
persists, try the test or trunk branch.

This is experimental code implementing a new technique. Thanks for 
the bug reports and feedback.

73 Ed W2RF





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[Flexradio] New w2rf QSK mods now available

[Ed Russell]

I thought I was finished with PwrSDR QSK a couple of days ago, but 
then I had a few more thoughts...

There is a new version in the SVN branch w2rf\bin\release

My favorite settings are DSP 4096/256 at 96Khz/512. What are yours?

I honestly think that these latest changes take QSK about as far as 
it can go with the current architecture. Hopefully, someone will 
prove me wrong :)

73 Ed W2RF


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Re: [Flexradio] W2RF code vs. trunk code

[Ed Russell]

I see two of my bug fixes merged, but not the main QSK improvements 
which are in the DttSP files winmain.c and update.c

73 Ed W2RF

On 12 May 2008 at 11:01, Eric Wachsmann wrote:

> Ed's CW enhancements were merged into the trunk and the test and rx2
> branches this morning.  :)
> 
> We will definitely be incorporating the Direct I/Q feature as well, but it
> won't likely make the next official release due to time/scheduling
> constraints.
> 
> A major thanks goes to Ed for his work in these areas.  
> 
> 
> Eric Wachsmann
> FlexRadio Systems
> 
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Steve Kallal
> Sent: Monday, May 12, 2008 10:45 AM
> To: flexradio@flex-radio.biz
> Subject: [Flexradio] W2RF code vs. trunk code
> 
> I also like Ed's (W2RF) code. It definitely makes CW operation a lot
> smoother.
>  
> That said, I plan to purchase the 2nd receiver, which will require changes
> added by Eric in the trunk branch. I am concerned that Ed's code won't
> support the 2nd receiver.
>  
> 1. Will Ed merge the 2nd receiver code into his branch?
> 
> or
>  
> 2. Will Eric merge Ed's changes into the trunk branch?
>  
> I am particularly intereseted in Ed's ehancements to CW latency. I haven't
> looked at his other enhancements.
>  
> 73,
>  
> Steve N6VL
>  
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[Flexradio] w2rf update 2 for CW ops

[Ed Russell]

CW Flexers,

I've again made some significant changes to the QSK response. Let me 
know of any questions or problems.

Available in the SVN w2rf branch.

73 Ed W2RF


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Re: [Flexradio] [FlexRadio] I/Q

[Ed Russell]

Don,

The Flex radio receives a certain bandwidth of spectrum depending on 
the sample rate. It is either 48, 96, or 192khz. That is what you see 
in the Panadapter display.

A certain segment of that is demodulated depending on the mode, 
usually a few khz. That is what is output to the Flex audio.

There are a large and growing number of applications that can work 
with the whole spectrum segment to do very interesting processing. 
One of these is CW Skimmer by VE3NEA. Also there are other spectrum 
analyzers such as SpectraVue and SpectraLab that can do interesting 
things with the spectrum, in fact doing their own demodulation.

The Direct I/Q output feature takes the whole spectrum that is 
sampled by the Flex, and passes it on to VAC, where it can be 
accessed by other programs.

This in no way affects the normal operation of the Flex. Its 
demodulated output still goes to the audio output. However the whole 
sampled spectrum is made available to other applications via the 
Direct I/Q output.

Hope this helps. Please let me know of any further questions.

73 Ed W2RF

On 10 May 2008 at 17:59, Tim Ellison wrote:

> I am not 100% sure because I don't know in what context the term was used, 
> but I assume that it means digitizing the RF waveform at its fundamental 
> frequency rather than mixing it down to 9 KHz "IF" before digitizing it.  The 
> SDR-1000 and FLEX-5000 do the later.
> 
> 
> 
> -Tim
> 
> 
> 
> 
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Don Sachnoff
> Sent: Saturday, May 10, 2008 3:38 PM
> To: flexradio@flex-radio.biz; [EMAIL PROTECTED]
> Subject: [FlexRadio] I/Q
> 
> 
> Can someone direct me or provide some information regarding Direct I/Q
> - what it means as it pertains to the F5K, PSDR, etc?
> 
> Don - kx9q
> 
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[Flexradio] w2rf update

[Ed Russell]

Flexers,

There is a new PwrSDR build in the SVN W2RF/Release branch, and a new 
RigSync beta build for download, which incorporate the following 
changes:

Direct I/Q output to VAC:
-
  Performance has been improved for 96 an 192khz

SpaceNav support:
-
  Button 1 now switches between VFOA and VFOB. 

To enable this
  while in PwrSDR press the right 3Dx button
  on the 3Dx control panel select the Button Configuration tab
  Select for L the option Button 1

If you want VFO control only and not Panadapter Flight, deselect 
Pandadapter Flight on the Setup General>Navigation tab.

If you experiment with panadapter flight, you will probably want to 
adjust sensitivity settings on the 3Dx Advanced tab. Please report 
your experience to me. I am especially interested in features that 
could be added to the Navigation tab.

General performance:

  The current build includes an experimental RX latency reduction 
algorithm. It is most effective when the ratio of the DSP buffer size 
to the audio buffer size is large.

For optimum CW operation I suggest DSP buffer sizes of 4096/256 with 
audio at 48khz/256. With these setting the RX latency is reduced by 
about 30-40%.

The new system may need more CPU although I have not seen that here. 
Let me know of any problems.

Also, RigSync:
--
  There is a new build of RigSync available at

http://www.ehr.net/w2rf/download/rigsync0100.msi

which fixes a number of small bugs. Also Option settings are now 
saved on exit :)

Enjoy!

73 Ed W2RF


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Re: [Flexradio] Open up the bandwidth of the Flex 5000 for use with CW Skimmer??

[Ed Russell]

Alan,

No, you can't get both demod and I/Q out to VAC. But if you are 
getting I/Q out to VAC, you still get the demod out to the regular 
Flex outputs such as headphone jack.

73 Ed W2RF

On 28 Apr 2008 at 19:16, Alan NV8A wrote:

> Since VAC can create *multiple* virtual audio cable pairs, is it 
> possible to have the regular demodulated audio feeding one of them and 
> the I/Q signals feeding others?
> 
> 73
> 
> Alan NV8A
> 
> 
> On 04/27/08 01:50 pm Ed Russell wrote:
> 
> > If you have a connection to the SVN source repoistory, the version of 
> > PowerSDR in the w2rf branch has a feature called Direct I/Q output, 
> > which works with CW Skimmer in wideband modes.
> > 
> > You can find additonal instructions in the Skimmer help file. Let me 
> > know if you have further problems or questions.
> 




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[Flexradio] RigSync 1.0 beta available

[Ed Russell]

Hi All,

Anyone interested in syncing PowerSDR with other radios is welcome to 
download the RigSync 1.0 beta from

http://www.ehr.net/w2rf/download/rigsync0100.msi

Let me know of any problems or questions.

73 Ed W2RF




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Re: [Flexradio] Open up the bandwidth of the Flex 5000 for use with CW Skimmer??

[Ed Russell]

Hi Mack,

If you have a connection to the SVN source repoistory, the version of 
PowerSDR in the w2rf branch has a feature called Direct I/Q output, 
which works with CW Skimmer in wideband modes.

You can find additonal instructions in the Skimmer help file. Let me 
know if you have further problems or questions.

73 Ed W2RF

On 27 Apr 2008 at 12:16, Mack McCormick wrote:

> Is it possible to open the bandwidth further than 3kHz to enable CW skimmer 
> to see more signals? I'm currently using CW Skimmer with my RFSpace SDR-14 
> but would prefer to be able to use PowerSDR and the Flex. Please advise.73, 
> MackWB4MAK
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Re: [Flexradio] CW QSK ability

[Ed Russell]

Jim,

When I'm not getting QSK and my CPU is at 8%, I'm wondering where the 
bottleneck is. 250ms latency is a real long time in the cpu universe.

73 Ed W2RF

On 26 Apr 2008 at 6:37, Jim Lux wrote:

> Quoting Robert Dennison <[EMAIL PROTECTED]>, on Sat 26 Apr 2008 05:36:16 AM 
> PDT:
> 
> > We now await the first release of the new SW architecture
> > implementation.. The application just screams for multiprocessor -
> > multi-threaded implementation and that's the new architecture.  In so
> > many ways,  FlexRadio is the solution who's time has arrived...
> 
> indeed, a multi processor implementation might be nice, however, it  
> should be necessary.
> 
> The existing implementation IS multithreaded (and has been since the  
> beginning)
> 
> I suspect that there are some idiosyncracies in the implementation  
> that have "bad interactions" with some of Windows.  The existing  
> PowerSDR uses the pthreads package to provide a POSIX threads  
> interface to Windows's multithreading environment.  There may be some  
> issues there.
> 
> After all, there are existence proofs for Windows software that has  
> very good real time response characteristics, running on a single  
> processor.  Games are the most notable one, but there's also data  
> acquisition software (e.g. LabView) that does quite well at a  
> millisecond scale timing.  I suspect, though, that the dollars/labor  
> invested in making first person shooter games and LabView play nice in  
> the Windows environment is substantial.
> 
> bear in mind, too, that having the multiple cores available doesn't  
> mean that you automatically get better performance.  The OS has to  
> support farming the work out to the cores in a useful way, and you're  
> still faced with a bunch of other bandwidth limits (e.g. memory bus,  
> i/o device access).  This is true regardless of the OS.
> 
> 
> 
> 
> Jim, W6RMK




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Re: [Flexradio] CW QSK ability

[Ed Russell]

The Flex is not going to just get better. It's going to be a whole 
new radio!

73 Ed W2RF

On 25 Apr 2008 at 12:27, Frank Brickle wrote:

> Tim --
> 
> Correct.
> 
> 73
> Frank
> AB2KT
> 
> 
> On Fri, Apr 25, 2008 at 12:08 PM, Tim Ellison <[EMAIL PROTECTED]> wrote:
> 
> > I assume that we can infer that the new SDR software architecture is taking
> > all of this into account as a fundamental design criterion so that a better
> > mouse trap is built from the ground up.
> >
> > -Tim
> > 
> >
> > -Original Message-
> > From: [EMAIL PROTECTED] [mailto:
> > [EMAIL PROTECTED] On Behalf Of Frank Brickle
> > Sent: Friday, April 25, 2008 11:54 AM
> > To: Dave Blaschke
> > Cc: flexradio@flex-radio.biz
> > Subject: Re: [Flexradio] CW QSK ability
> >
> > Dave --
> >
> > I wrote the iambic keying code that's used in PowerSDR. I myself am a 99%
> > CW
> > op and was when I was first licensed in 1962. The Bobs N4HY and K5KDN are
> > superb, long-time CW ops both by profession and avocation.
> >
> > I mention these things simply to emphasize that getting CW right is not an
> > afterthought for us. It's a matter of paramount importance. And a lot of
> > where the Flex software needs to go from here will also depend on getting
> > exactly the same turnaround issues nailed down once and for all. Any of the
> > ARQ digital modes place the same stresses on turnaround. There is no
> > alternative to doing it correctly.
> >
> > That said, there is no way to truly clean up the problem without some
> > radical surgery. As the proverb goes, be careful what you ask for, since
> > you
> > might get it ;-)
> >
> > 73
> > Frank
> > AB2KT
> >
> >
> >
> > On Fri, Apr 25, 2008 at 11:24 AM, Dave Blaschke <[EMAIL PROTECTED]> wrote:
> >
> > > OK, here is my final word on this topic.
> > >
> > > PowerSDR/SDR-5000 is an outstanding performer, in my opinion. So it
> > > is my hope that this QSK topic will be given due consideration by the
> > > PowerSDR programming team. CW may be dying, but we CW operators are
> > > not. Guys, don't let this deficiency go un-noticed. If SDR-5000 is to
> > > be a serious competitor it must demonstrate equal, or better,
> > > performance in this CW QSK area also, as it does in almost all other
> > > areas..
> > >
> > > Dave, W5UN
> > >
> > >
> > > ___
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> > > http://www.flex-radio.com/
> > >
> > >
> >
> >
> > --
> > The only thing we have to fear is whatever comes along next. -- Austin
> > Cline
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> >
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Re: [Flexradio] Is CW broken in PowerSDR?

[Ed Russell]

I can't reproduce this result. On a 3ghz quad core, with 192khz 
sample rate and cpu at 8%, sending 25wpm, I hear no usable band sound 
between dots. Only pops and crackles.

73 Ed W2RF

On 25 Apr 2008 at 15:15, Robert Dennison wrote:

> Hey Jerry,
> 
> You've probably noticed my post just pervious to yours.   With a 3Ghz
> Pentium 3D and nothing but v1.10.4 running, I had QSK to 25 Wpm.   A
> Pentium 3D is a bit of a dog so I bet a top end box gets 40WPM...
> 
> How about giving us your QSK performance limit?   Your machine and
> Windows info.   No apps running but PowerSDR v1.10.4 basic release.
> 
> Over time I've established to my satisfaction my SDR1K doesn't issue any
> discernable output power with a Drive of 0.  So, I just found a solid
> tone in a CW subband off set my transmit frequency 200Hz so I could
> recognize the tone, enabled break in set the delay to 10msec and had
> at...  
> 
> DON'T do this procedure unless you know for sure your SDR doesn't
> generate any power with "0" DRIVE!
> 
> If we get a dozen or so results, we can probably pin this down to truth!
> 
> very best regards
> Rob
> AB7CF
> 
>  
> On Fri, 25 Apr 2008 17:04:13 -0400 Jerry Flanders
> <[EMAIL PROTECTED]> writes:
> > At 03:35 PM 4/25/2008, Jim Lux wrote:
> > >Quoting Jerry Flanders <[EMAIL PROTECTED]>, on Fri 25 Apr 
> > 2008
> > >11:30:57 AM PDT:
> > >
> > >
> > >>I am beginning to wonder if CW in the production software is 
> > broken
> > >>and only we in the field notice it. Or perhaps the production 
> > version
> > >>does not presently include features of the version used by Bob 
> > above?
> > >
> > >
> > >here's a simple test which someone with a F5K could run
> > >
> > >If you have a marker generator or calibrator, turn it on with 
> > 
> > 
> > Hi Jim
> > 
> > Actually, it is pretty easy to test by ear, and you don't need any 
> > special equipment - QSK is the ability to actually hear activity on 
> > 
> > the band between dits at a reasonable speed. Simply set the CW speed 
> > 
> > to, for example, 35 WPM, key a string of dits and listen for band 
> > activity between the dits. This is the true test of a QSk radio - no 
> > 
> > test generators required. The ICOM 756PRO3 passes this test, as does 
> > 
> > the Elecraft K3 and many other modern radios.
> > 
> > Jerry W4UK
> > 
> > 
> > 
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> > 
> > 
>  
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Re: [Flexradio] CW QSK ability

[Ed Russell]

Guenter,

The suggested operation would be that you hear both your transmitted 
signal and the band between dots properly aligned, only delayed by 
the latency interval. In practice the 5K doesn't do this. You might 
hear the band during the start of the first keying element. Then only 
pops and crackles.

Assuming this could be fixed, then there is still the problem of 
hearing your own keying delayed. There is a threshold where the delay 
impairs keying. For me that threshold is below current latencies.

PwrSDR does not appear to delay the monitor sidetone by the receive 
latency period, which makes keying easier but blocks hearing the 
band.

73 Ed W2RF

On 25 Apr 2008 at 10:13, guenter wrote:

> Am Freitag, 25. April 2008 02:50:46 schrieb Jim Lux:
> 
> >
> > I believe that's what the latest versions of PowerSDR do.. they run
> > the Rx continuously, and gate the audio off during Tx time. More than
> 
> If so, audio keying may be the problem.
> 
> If you want to work QSK, you want to hear the signals between your 
> transmission. It is a minor problem, if , due to latency, you hear the others 
> signal while you press your key.
> So in fact latency itself is acceptable (if in the range of some 100ms)
> With a continously running rx and no (or delayed /adptive) audio gating and 
> AGC off the only limitation for QSK is the T/R relay. You will hear all 
> signals - delayed.
> 
> BTW: I (better my XYL :) ) work CW in SSB mode, transmitting CW tones via a 
> phone line and using fast VOX. This do not allow QSK for the same reason as 
> well.
> 
> guenter
> DK1RI
> 
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Re: [Flexradio] CW QSK ability

[Ed Russell]

Jim, 

Thanks for the interesting theoretical reflections. The question 
remains as to why the 5k behaves the way it does in the shack. Please 
see the 2nd tier responses inserted below:

On 24 Apr 2008 at 17:47, Jim Lux wrote:

> At 11:41 AM 4/24/2008, Ed W2RF wrote:
> >After the completion of transmitting a code element, the receiver is
> >going to be receiving the tail of that element for the duration of
> >the receive latency period. After that, the AGC has to recover.
> 
> The AGC (being in software) could recover instantly (i.e. be at the 
> level it was before you started transmitting) (I haven't looked at 
> the code recently, but I think it does this.. that is, the AGC loop 
> is held fixed during Tx time)

By AGC I mean whatever is actually happenning in the Flex hardware or 
software. There is a distinct bounce. Listen to it.

> >Even in split or with a second receiver what will be heard between
> >elements happened the latency interval earlier in time.
> 
> 
> only if the monitor isn't also passed through the Rx.  If you put the 
> Tx sidetone through the Rx, it will have exactly the same latency as 
> the received signals. You'll hear both your signal and the other 
> guys, properly aligned.

This doesn't stop the muted TX signal from blocking reception. The RX 
can't start buffering up new data until the TR relay opens. Then the 
new data is subject to the latency period before it is heard. By the 
time anything is available to be heard, it is time to start the next 
code element. Try it.
 
> >Current SDR latencies are running in the range of 100ms or more. This
> >latency will have to be reduced by at least a factor of 10 before
> >there can be a 10ms recovery in QSK.
> 
> 
> All receivers, including totally analog ones, have some time delay 
> through them.  To a first order, one could approximate it as (1/IF 
> bandwidth) * # of filter sections.  For a 200 Hz filter with 3 or 4 
> sections, that's already 20 milliseconds.

In a side-by-side comparison the latency of my 950SDX is negligible. 
I hear the band between 40wpm dots. The latency of the Flex 5k 
renders QSK unusable. I hear nothing except pops and sputters between 
dots.

> Admittedly, 100ms is pretty long, but I don't know that PowerSDR is 
> that long, especially with small buffers and fast sample rates.

See my current measurements posted in this thread. Fast sample rates 
have lower latency but poor filter performance. Perhaps 96khz is a 
decent compromise, but my tests on a 3ghz quad core show 150ms 
latency. That's too much.

> >The low level of latency required for true QSK is achieved in box-
> >based SDR units like TenTec and FT-2000. Why is it not being achieved
> >in computer-based SDR's like the Flex 5k?
> >

Again, how do the box-based units achieve low latency with fast 
turnaround, and WHY CAN'T THE FLEX 5k DO THE SAME?

(Don't get me wrong, I love my Flex.)

73 Ed W2RF


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Re: [Flexradio] CW QSK ability

[Ed Russell]

Al,

Perfectly well put!

I remeasured the current PwrSDR RX latency, using the delay from 
known beacon transmissions, with DSP 4096/256:

192khz  1024buf   86ms
 96khz   512buf  152ms
 48khz   256buf  247ms

73 Ed W2RF

On 24 Apr 2008 at 13:39, Al Groff, K0VM wrote:

> System T/R turn around is hardware KEY UP  to NEW SOUND in the ear..




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Re: [Flexradio] CW QSK ability

[Ed Russell]

Please correct me if I am wrong, but it appears to me that QSK on a 
SDR encounters a wall at the receive latency interval, which sets a 
minimum bound for recovery of reception.

After the completion of transmitting a code element, the receiver is 
going to be receiving the tail of that element for the duration of 
the receive latency period. After that, the AGC has to recover.

Even in split or with a second receiver what will be heard between 
elements happened the latency interval earlier in time.

Current SDR latencies are running in the range of 100ms or more. This 
latency will have to be reduced by at least a factor of 10 before 
there can be a 10ms recovery in QSK.

The low level of latency required for true QSK is achieved in box-
based SDR units like TenTec and FT-2000. Why is it not being achieved 
in computer-based SDR's like the Flex 5k?

My two cents...

73 Ed W2RF

On 24 Apr 2008 at 16:58, Dave Blaschke wrote:

> The best performance I can obtain for QSK is at the following settings:
> GENERAL-AUDIO-Buffer: Size 512, Sample Rate: 48000
> GENERAL-OPTIONS: Process Priority: High
> DSP: TX Buffer Size: 512, RX Buffer Size: 512
> Delay (ms): 10 (minimum setting)
> 
> At these settings I see around 10% CPU utilization on the PowerSDR screen.
> 
> With these settings, I am almost, but not quite there. Here is my 
> complaint. When returning from T to R there is an audible "pop" that 
> tends to mask reception during Dits and Dahs. I am wondering if 
> Receive recovery is occurring quickly enough. Elimination of the 
> "pop" on transition from T to R would go a long way in smoothing out 
> QSK, in my opinion.
> 
> My method of comparing QSK capability between my SDR-5000 and my 
> FT1000D is to select the frequency on a constant carrier signal, and 
> then key at 20 wpm to see how well I am able to hear the carrier 
> between Dits and Dahs.
> 
> 
> Dave, W5UN
> 
> 
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[Flexradio] Flex 5k not working under Vista SP1

[Ed Russell]

After installing Vista SP1, PwrSDR no longer sees the Flex.

The Flex firewire control panel works properly. System device manager 
shows the Flex as working properly. I have UAC off and am running as 
administrator. 

Anyone else see this or have a suggestion?

Thanks,

Ed w2rf


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[Flexradio] W2RF branch update

[Ed Russell]

The w2rf SVN branch now contains all mods from the test branch, the 
k5kdn RTTY mods, plus the SpaceNavigator and DirectI/QtoVAC test 
features.

On 6 Apr 2008 at 10:07, Bob Tracy wrote:

> Hi Ed,
> 
> Just merged the rtty offsets into the Test Branch.
> 
> Bob
> 
> -Original Message-----
> From: Ed Russell [mailto:[EMAIL PROTECTED]
> Sent: Sunday, April 06, 2008 7:12 AM
> To: FireBrick
> Cc: [EMAIL PROTECTED]
> Subject: Re: [Flexradio] New knob support for PowerSDR
> 
> 
> Hi Bill,
> 
> The w2rf branch is synchronized with the test branch. As soon as Bob
> merges his RTTY changes into the test branch, I will merge them into
> my branch. He said he will do that in a few days.
> 
> Let me know of any suggestions you have after your contest experience
> with the SpaceNav.
> 
> Thanks,
> 73 Ed W2Rf
> 
> On 6 Apr 2008 at 6:41, FireBrick wrote:
> 
> > I use the 3DConx AND a mouse.
> > 3DC on left side of keyboard to adjust frequency up and down the band when
> S&P contesting, or to adjust frequency for slightly off callers when
> 'Running'.
> > Wireless mouse on right side of keyboard for Mouse button control of
> contesting or dxing program.
> > Two fisted approach.
> > SN used to control tuning, Mouse used to control PWSDR/Contesting Logger.
> >
> > I can fine tune frequency slightly with the mouse wheel, but 3DC is more
> intuitive as it's a 'knob'.
> > Mouse wheel, half the time I turn it in wrong direction. (I can't walk and
> chew gum either).
> >
> > The 3DC ONLY controls only PWSDR, using a mouse (or trackball) across
> multiple monitors to adjust frequency/band/settings is far too slow for
> contesting. For me, even though a touch typist, the keyboard is too slow.
> Old fingers and even older memory results in fumbles and forgotten
> keystrokes.
> >
> > Now to get W2RF code and K5KDN's digital offset code merged into
> 'test-svn' code.
> > Been a fun digital contest this weekend using all the new features of
> Flex.
> >
> > A big thank you to Steve for DDTu, Bob for his digital offset code, and
> Richard for the 3DC code.
> > Of course a big thank you to the others writing, code for Flex.
> >
> > What can be better than Contesting, while watching in succession, Cubs
> win, WSox win, and Final Four?
> >
> >
> >
> >
> >   - Original Message -
> >   From: Alan NV8A
> >   To: Flex Group
> >   Sent: Sunday, April 06, 2008 5:13 AM
> >   Subject: Re: [Flexradio] New knob support for PowerSDR
> >
> >
> >   On 03/27/08 09:29 am Ed Russell wrote:
> >
> >   > The w2rf test console now has basic support for the 3DxConnection
> >   > SpaceNavigator.
> >   >
> >   > This is native support, not through keystrokes. It also works even
> >   > when PowerSDR doesn't have focus.
> >   >
> >   > It is available in the SVN branch w2rf/release/bin
> >   >
> >   > You may need to delete the mdb file. Direct I/Q to VAC is still
> >   > supported. Let me know of any problems, questions, or comments.
> >
> >
> >   Does the SpaceNavigator replace the mouse or supplement it? I have my
> >   keyboard and trackball (I hate mice) on a pull-out keyboard shelf. There
> >   is no room for both trackball and SpaceNavigator.
> >
> >   73
> >
> >   Alan NV8A
> >
> >   ___
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> >
> 
> 
> 
> 
> 




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Re: [Flexradio] SpaceNavigatorPE and W2RF svn

[Ed Russell]

The only differences in the PE and the SE are the license and the 
price :)

73 Ed W2RF 

On 31 Mar 2008 at 20:44, Neal Campbell wrote:

> I cannot tell the difference between the Personal Edition  versus the
> Standard one, except its half the price. Is there any difference I
> should care about?
> 
> 73
> Neal
> 
> On Mon, Mar 31, 2008 at 8:25 PM, FireBrick <[EMAIL PROTECTED]> wrote:
> > My Navigator arrived today (TigerDirect was cheapest I found).
> >
> >  this is really neat.
> >  This is the 'Knob/Dial' you have been waiting for.
> >  As it only works with PWSDR (via W2RF svn code) you don't have to worry 
> > about moving that mouse all around.
> >  I can't wait to give this a workout in the weekends contests.
> >
> >
> >  Works much better than the 'other dial',
> >
> >  And did I say it has a 'blue light'???
> >
> >  A tad more neon that the Flex on/off switch but close enough it looks like 
> > it's part of the 5000A
> >
> >
> >  ___
> >  FlexRadio Systems Mailing List
> >  FlexRadio@flex-radio.biz
> >  http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
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> >  Knowledge Base: http://kb.flex-radio.com/  Homepage: 
> > http://www.flex-radio.com/
> >
> >
> 
> 
> 
> -- 
> Neal Campbell
> Abroham Neal Software
> Programming Services for Windows, OS X and Linux
> (540) 242 0911
> -
> Try Spot for OS X, the intelligent DXCluster Client at
> www.abrohamnealsoftware.com
> 
> For a great dog book, visit www.abrohamneal.com
> 
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Re: [Flexradio] got my navigator this pm

[Ed Russell]

Bill,

It's possible to change vfos by rocking left to right. I plan to do 
it with the  left button, which now does nothing. How about that? 
Would you still want the option to change vfos by rocking?

Glad it is working for you.

73 Ed W2RF



On 31 Mar 2008 at 19:40, FireBrick wrote:

> 
> wow...what a great aide 
> 
> got a suggestion 
> 
> I see that it controls which ever vfo is 'activated' 
> I do a lot of split work 
> So I need a QUICK way to switch to vfob and tune it 
> 
> so far only up/down ZOOM panadaptor 
> and 
> VFO control and on mine rock left/right and twist the knob changes 
> vfo up or down 
> 
> but I think 'ROCK' should switch vfo's, 
> Rock it left, and it adjusts vfoa, Rock it right and it does vfo b? 
> 
> 
> Is that possible? 
> Then I would never have to move the mouse onto PWSDR which sits on my 
> Secondary Monitor while all my logging/contest programs run on 
> Primary monitor. 
> 
> 




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[Flexradio] New "fly the panadapter" feature for PowerSDR available now

[Ed Russell]

Flexers,

New control axes have been added to the SpaceNavigator support:

Twist controls VFOA (or if in split, VFOB)

Push forward/backward zooms the panadapter

Push left/right pans the panadapter

Push up/down controls the filter width

Availble now in SVN branch w2rf/bin/release.

Enjoy your flight!

73 Ed W2RF


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Re: [Flexradio] New knob support for PowerSDR UPDATE

[Ed Russell]

Flexers,

I've just updated the w2rf SVN with a missing piece.

If you are wondering what a 3DxConnection SpaceNavigator is, look 
here:

http://www.3dconnexion.com/3dmouse/spacenavigator.php

It's the ultimate knob :)
 

73 Ed W2RF
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[Flexradio] New knob support for PowerSDR

[Ed Russell]

Hello Flexers,

The w2rf test console now has basic support for the 3DxConnection 
SpaceNavigator.

This is native support, not through keystrokes. It also works even 
when PowerSDR doesn't have focus.

It is available in the SVN branch w2rf/release/bin

You may need to delete the mdb file. Direct I/Q to VAC is still 
supported. Let me know of any problems, questions, or comments.

73 Ed W2RF


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Re: [Flexradio] VFO KNOB FOCUS

[Ed Russell]

I'm more familiar with WriteLog, but am looking into N1MM too.

On 5 Mar 2008 at 4:32, Dave Blaschke wrote:

> That would be a great addition to add N1MM logging window as part of 
> the SDR panel.
> 
> Dave, W5UN
> 
> 
> At 21:42 3/4/2008, you wrote:
> >What if the contest logging program's entry window were imbedded in
> >the PowerSDR panel.
> >
> >Then there would be only one common window. Would that solve the
> >problem?
> >
> >73 Ed W2RF
> >
> >On 4 Mar 2008 at 16:36, Tim Ellison wrote:
> >
> > > This problem is a Windows behavior specification, not an 
> > application issue.  Program focus is determined natively by which 
> > program you last clicked you mouse on.  Or by using Powertools and 
> > then you just don't have to do the click, the window in focus.  You 
> > would have to have a pointing device's API to over-ride the default behavior
> > >
> > > -Tim
> > > 
> > >
> > >
> > > -Original Message-
> > > From: [EMAIL PROTECTED] 
> > [mailto:[EMAIL PROTECTED] On Behalf Of David Painter
> > > Sent: Tuesday, March 04, 2008 3:43 PM
> > > To: flexradio@flex-radio.biz
> > > Subject: [Flexradio] VFO KNOB FOCUS
> > >
> > >
> > >
> > > Tim
> > >
> > > Firebrick wrote:
> > >
> > > Actually I still feel that if Flex offered a 'outboard dialknob', 
> > so that the mouse can stay on the contest program and frequency can 
> > be controlled by the left hand, it would be a winner.
> > >
> > > Is there any way that focus could be retained by PWRSDR when 
> > using an outboard dialknob in the manner outlined by Bill???
> > >
> > > Regards
> > >
> > > David Painter - G4PNX
> > >
> > >
> > >
> > > ___
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> > > FlexRadio@flex-radio.biz
> > > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
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> > http://www.flex-radio.com/
> > >
> > >
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> > http://www.flex-radio.com/
> > >
> >
> >
> >
> >
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Re: [Flexradio] VFO KNOB FOCUS

[Ed Russell]

What if the contest logging program's entry window were imbedded in 
the PowerSDR panel.

Then there would be only one common window. Would that solve the 
problem?

73 Ed W2RF

On 4 Mar 2008 at 16:36, Tim Ellison wrote:

> This problem is a Windows behavior specification, not an application issue.  
> Program focus is determined natively by which program you last clicked you 
> mouse on.  Or by using Powertools and then you just don't have to do the 
> click, the window in focus.  You would have to have a pointing device's API 
> to over-ride the default behavior
> 
> -Tim
> 
> 
> 
> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of David Painter
> Sent: Tuesday, March 04, 2008 3:43 PM
> To: flexradio@flex-radio.biz
> Subject: [Flexradio] VFO KNOB FOCUS
> 
> 
> 
> Tim
> 
> Firebrick wrote:
> 
> Actually I still feel that if Flex offered a 'outboard dialknob', so that the 
> mouse can stay on the contest program and frequency can be controlled by the 
> left hand, it would be a winner.
> 
> Is there any way that focus could be retained by PWRSDR when using an 
> outboard dialknob in the manner outlined by Bill???
> 
> Regards
> 
> David Painter - G4PNX
> 
> 
> 
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[Flexradio] New build for CW Skimmer users

[Ed Russell]

I have added Image Calibration to the direct I/Q output. Be sure to 
reset Automatic I/Q Balance in CW Skimmer.

Build 0.1.3 in SVN branch w2rf/release/bin

73 Ed W2RF


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[Flexradio] Other ways to reduce VAC latency

[Ed Russell]

A VAC feature that can cause accumulating latency is its automatic 
resampling. It is so automatic that you can't easily even tell that 
it is working. But there is a way to minimize it and the delays that 
it causes.

First run the VAC control panel and start your setup. Observe the 
indicated sample rates.

Then close the applications so the sample rates are blank. On the 
control panel for the cables set the SR minimum and maximum to that 
value. Press Set.

This will restrict VAC from doing implicit resampling. It will still 
do format conversion. If you still are getting accumulating delays 
change the cable setting from Range to Format.

Even with these settings it is advisable to use Windows Direct Sound 
if possible. Also a small VAC buffer setting in PowerSDR can make a 
big difference. In order to do this use the console at SVN branch 
w2rf/bin/release.

73 Ed W2RF


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Re: [Flexradio] Some VAC Latency observations FWIW

[Ed Russell]

In my direct I/Q output tests I have seen this increasing latency. I 
found that switching VAC to Windows Direct Sound helped with the 
problem. Also you might want to try my console, which allows many 
more buffer settings for VAC output than the standard console. I get 
best results with a very small setting.

73 Ed W2RF

On 24 Feb 2008 at 16:44, FireBrick wrote:

> Thanks Al, interesting.
> I was one of the first to report this anomaly. I experienced it operating in 
> a RTTY contest and each cq took longer and longer to start.
> I quickly found the cure, disable/enable the VAC button.
> 
> My question is this: would your testing discovery also be the cause for this 
> anomaly.
> 
> If I sent a series of cq's, ending in the callsign eventually, I would see my 
> callsign echo in the transmit pane of the contest software.
> For instance
> cq de w9ol w9ol 
> would result in a 'l' being seen in the first character position of the 
> transmit pane.
> after more cq's, it would increase to a 'ol'
> eventually a '9ol'
> 
> Usually at this point I'd do the VAC disable/enable and the anomaly would be 
> gone only to again appear at the same approximate rate.
> 
> The contesting software also did cw which would also display the sent buffer 
> just as it does in rtty.
> The anomaly would appear regardless of mode.
> 
> 
> 
>   - Original Message - 
>   From: Al 
>   To: flexradio@flex-radio.biz 
>   Sent: Sunday, February 24, 2008 2:53 PM
>   Subject: [Flexradio] Some VAC Latency observations FWIW
> 
> 
>  I have recently completed a set of measurements on PowerSDR "VAC 
>   output" latency
>   during receive.  I am not talking about latency in the VAC program, it 
>   was not a part of
>   these measurements.
>  The test conditions were limited to my ONE set of hardware/software, 
>   other
>   hardware/software may get different results. The test was with SDR-1000, 
>   D44, AMD sempron
>   3300+ @ 2ghz w/ 2MB ram & Realtek on-board sound, WinXP, PowerSDR 1.10.4 
>   SVN 1985.  When
>   you set up your VAC you may have noticed that the PSDR set up, by 
>   default, points to the
>   system default sound device. If VAC is enabled you can hear delayed 
>   receive audio through
>   your system sound card. Adding a patch cord from the D44 speaker output 
>   to the LEFT channel
>   of the system LINE IN and another from the system speaker out to the 
>   RIGHT channel LINE IN,
>   and configuring the system sound control channels, I can use Audacity to 
>   record and measure
>   the delay between the two sound sources. ( I use WVV as a signal source 
>   when making my
>   latency measurements, nice time ticks. )  The "Virtual Audio Cable" 
>   software is NOT used in
>   these measurements.
>  What I am calling "VAC output" latency I am assuming is due to 
>   latency within
>   PowerSDR, but could as well be latency in the system sound channel or a 
>   combination of the
>   two.  However, the fact that latency is observed with programs (Mixw, 
>   MTTY,etc ) used in
>   conjunction with the VAC software lead me to suspect that most of the 
>   latency is within
>   PSDR.
>  I can confirm the observation of others that the latency increases 
>   over time and
>   that toggling the VAC button within PSDR "resets" the delay to minimum.
>  In the PSDR VAC setup form, neither buffer size nor latency options 
>   have any
>   significant effect on the measured latency.  The VAC Sample rate does 
>   have an effect on the
>   initial latency.
> VACInitial Sample Rate   Latency
>   8000 510 msec   11025530 msec
>   12000505 msec   < what I normally use.
>   24000240 msec
>   48000120 msec
>  The measured latency does increase over time and tends to increase 
>   slowly ( a few
>   msec/minute) in a straight line if the computer utilization is static 
>   (i.e. no user
>   inputs).On the other hand, some user interactions cause large jumps 
>   in latency. For
>   example, with the display in the 2x mode, dragging the PAN slider can 
>   cause the latency to
>   increase dramatically ( there are audible drop outs on the VAC channel 
>   but no drop outs on
>   D44 speaker out).  I can routinely cause the latency to increase to 4 or 
>   5 seconds. I have
>   yet to see a latency above 5 seconds.
>  A couple of implied observations. Somewhere in the "VAC output" data 
>   stream there
>   is a FIFO buffer that can be as large as 60K samples in length ( 5 sec x 
>   12000 samples/sec.
>   ).  The latency increases when the output side of the FIFO buffer is 
>   starved for CPU cycles
>   ( My cpu utilization is normally less than 10% ).
> 
>  On a slightly different note...
>  The D44 that I use, has a receiver audio digital output stream ( 
>   Delta 44 Monitor ) which
>   may be selected as an input to programs like MixW, EasyPal, etc. without 
>   the use of the VAC
>   program or the PSDR "VAC output" stream.  This str

Re: [Flexradio] Testing

[Ed Russell]

Since CW Skimmer attached directly to the I/Q data coming in from the 
hardware, it is effectively another receiver. However it doesn't 
receive on just one frequency. It sets up a receiver/decoder anywhere 
in the spectrum that it finds a signal. In my tests during the ARRL 
contest, that could be as many as 500 receivers acting at once, 
automatically copying code from stations as close as about 50hz 
apart. Use the output of its internal decoder to listen to any 
station by clicking on it, or have it tune the 5k to that frequency.

This is all working today.

73 Ed W2RF

On 21 Feb 2008 at 4:58, Lee A Crocker wrote:

> Daydreaming about contesting features is a lot of fun too, like hooking up CW 
> skimmer to the QSD.  
> 
> The F5K has in the present software as I understand it 16 possible watch 
> receivers.  If you were to deploy multiple watch receivers across the entire 
> 192khz QSD passband you could devise a database test that would allow the 
> watch receivers to look for needed contest multipliers.  In addition those 
> multipliers could be ordered by some statistical means as to the probability 
> of being able to work that station based on surrounding band cdx and whether 
> the multiplier is calling CQ or in a big run etc.  You could further list 
> multipliers in terms of their rarity.  Since you would be multiply processing 
> the passband you would have a near real time analysis of exactly what was on 
> the band.  Of course as you work stations the calls and exchange data could 
> be preprocessed ready for the logging software.  
> 
> With 2 receivers you could analyze what is on 2 bands.  Since the F5K with 
> the second receiver operates in triplex mode, that is both receivers and the 
> transmitter are active all the time.  The transmitter can be forced to 
> operate with either receiver on any given transmission, and antenna and 
> amplifier switching can be forced to follow the transmitter, so you can 
> easily configure the radio to put out 1500W on each of two bands on a 
> transmission by transmission basis.  The radio has built in 4 antenna inputs 
> (including the separate RX input for such things as beverages)  This means 
> you can virtually operate 2 bands at once, having the watch receivers scour 
> each of 2 bands for multipliers, while operating a run on one of the bands.  
> Since this is all done in one radio I think it would not be even classified 
> as SO2R but as a single radio, and it would not be classified as assisted, 
> since your station is doing all the analysis without any outside assistance
>  such as cluster.  
> 
> You might classify this set up in the configuration scheme as Contest Mode: 
> F5K_Lunch Eater
> 
> Ain't daydreaming fun?  This is this is virtually off the shelf daydreaming.  
> All the parts are nearly available (with the advent of the second receiver) 
> just waiting to be configured.
> 
> 73  W9OY
> 
> 
> 
> 
>   
> 
> Be a better friend, newshound, and 
> know-it-all with Yahoo! Mobile.  Try it now.  
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[Flexradio] New uses for W2RF I/Q to VAC Test Console

[Ed Russell]

In addition to fully supporting CW Skimmer in wideband mode, I have 
discovered two more very interesting applications for I/Q output to 
VAC.

1. SpectraVue 2.31, available free from 

http://www.moetronix.com/svdownload.htm

This is an excellent spectrum analyzer. Although designed to support 
the RF Space SDR-IQ, it also has an audio input mode. When the 5K is 
in 192khz mode I use this to show the wide spectrum, in tandem with 
the panadapter in PowerSDR focussing in on details.

2. DL4YHF's Spectraum Lab, available free from

http://freenet-homepage.de/dl4yhf/spectra1.html

This is a fully programmable laboratory for processing I/Q signals. 
Besides being a configurable spectrum analyzer, it has an array of 
decoder modules and other functions.

3. And, because VAC can support multiple attachments to a single 
cable, PowerSDR can run both SpectraVue and Spectrum Lab at the same 
time. I have even tested running them both plus CW Skimmer all at the 
same time.

73 Ed W2RF


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Re: [Flexradio] request for you guys who have your own consoles

[Ed Russell]

Tim,

Thanks, I'll do that on the next build.

73 Ed W2RF

On 19 Feb 2008 at 17:38, Tim Ellison wrote:

> You can add free form text to the program banner.
> 
> Open Setup.
> 
> Go to General->Options.
> 
> Add your custom title text.
> 
> 
> 
> -Tim
> 
> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of FireBrick
> Sent: Tuesday, February 19, 2008 3:20 PM
> To: FlexRadio List
> Subject: [Flexradio] request for you guys who have your own consoles
> 
> I have 3 different programmers consoles, each with a feature or option k6gra 
> has his different colors, so that one is easy to reconize but some of the 
> other branch versions are only differentiated by that specific feature they 
> created.
> 
> and being older than dirt, I sometimes fall asleep and wake up forgetful of 
> which console I have on the screen. LOL so maybe...adding your call to the 
> menu line...
> 
> LOL
> 
> what a great system...I can try out and comment on new features and move 
> toward what is important to me.
> 
> Don't think a postcard to my previous radio builders would have resulted in 
> such fast results and comments.
> 
> Time to take another nap, so I'm putting a postit note on the monitor telling 
> me which iteration is running!
> 
> (I know the version number, just don't know which console design) 
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Re: [Flexradio] Attn: CW Skimmer testers and users

[Ed Russell]

Dave,

In the wideband mode during the contest Skimmer was decoding over 200 
stations at once. It was amazing!

Why not use the keyboard keyer built into PowerSDR?

73 Ed W2RF

On 19 Feb 2008 at 14:15, Dave Beumer WA3FDB wrote:

> I'm also looking a good tool for sending CW generated by the keyboard.. I
> was hoping I wouldn't need to use seperate send and receive programs ... 
> 
> I've tried HRD and Mixw to generate CW, any others ??
> 
> I was using CWskimmer to monitor during the CW contest -- got it decoding 12
> different signals in 3K audio mode.
> 
> Dave 
> 
> -Original Message-
> From: Ed Russell [mailto:[EMAIL PROTECTED] 
> Sent: Tuesday, February 19, 2008 2:06 PM
> To: 'FlexRadio List'; 'FireBrick'; Dave Beumer WA3FDB
> Subject: RE: [Flexradio] Attn: CW Skimmer testers and users
> 
> Dave,
> 
> I don't think you want Skimmer to key the rig. You want to use it to tune to
> stations, which it does very well by click tuning.
> 
> For CW work I find its fast waterfall display to be a great band map. 
> Add decoding of all call signs in a pileup, and identifying them, then
> highlighting the contact station... I think even non-CW ops would like
> seeing the action revealed before their eyes.
> 
> 73 Ed W2RF
> 
> 
> On 19 Feb 2008 at 13:13, Dave Beumer WA3FDB wrote:
> 
> > Thanks Ed  --
> > 
> > Does CWskimmer have the ability to key the Rig ?
> > 
> > -Original Message-
> > From: Ed Russell [mailto:[EMAIL PROTECTED]
> > Sent: Tuesday, February 19, 2008 2:58 AM
> > To: [EMAIL PROTECTED]; FlexRadio List; FireBrick
> > Subject: Re: [Flexradio] Attn: CW Skimmer testers and users
> > 
> > Dave,
> > 
> > Select WDM in both PowerSDR and Skimmer. That should work. Also VAC 4 
> > is required. And be sure to turn off spur reduction (SR).
> > 
> > 73 Ed W2RF
> > 
> > On 18 Feb 2008 at 21:41, FireBrick wrote:
> > 
> > > I did also the first time
> > > selecting the WDM Flex audio worked.
> > > 
> > > 
> > > 
> > > On 2/18/2008 8:26:28 PM, Dave Beumer WA3FDB 
> > > ([EMAIL PROTECTED])
> > wrote:
> > > > Ed
> > > > 
> > > > I set PowerSDR/CWSkimmer as described .. I get the CWSkimmer error 
> > > > "The specified format is not supported or cannot be translated"
> > > > 
> > > > Any ideas ?
> > > > 
> > > > Dave
> > > > WA3FDB
> > > > 
> > > > -Original Message-
> > > > From: [EMAIL PROTECTED] 
> > > > [mailto:[EMAIL PROTECTED] On Behalf Of Ed Russell
> > > > Sent: Monday, February 18, 2008 5:18 PM
> > > > To: flexRadio List
> > > > Subject: [Flexradio] Attn: CW Skimmer testers and users
> > > > 
> > > > There have been a number of requests to interface PowerSDR to CW 
> > > > Skimmer in a wideband mode.
> > > > 
> > > > To facilitate that I have posted a version of PowerSDR that 
> > > > supports direct VAC output of 48khz. This has been tested with CW
> Skimmer.
> > > > 
> > > > It is availabe in the SVN branch w2rf/bin/release.
> > > > 
> > > > There is a checkbox on the VAC form to enable direct I/Q output. 
> > > > Only 48khz is supported at the moment, but 96 and 192khz will be 
> > > > available in the next few days.
> > > > 
> > > > In CW Skimmer select the SoftRock-IF mode with an IF of 9600. Also 
> > > > enable the CAT connection with PowerSDR.
> > > > 
> > > > I think you will agree with me that this is a very facinating and 
> > > > powerful conjunction of technologies.
> > > > 
> > > > 73 Ed W2RF
> > > ___
> > > 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://kb.flex-radio.com/  Homepage: 
> > > http://www.flex-radio.com/
> > > 
> > 
> > 
> > 
> > 
> > 
> 
> 
> 
> 
> 




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Re: [Flexradio] Attn: CW Skimmer testers and users

[Ed Russell]

Dave,

I don't think you want Skimmer to key the rig. You want to use it to 
tune to stations, which it does very well by click tuning.

For CW work I find its fast waterfall display to be a great band map. 
Add decoding of all call signs in a pileup, and identifying them, 
then highlighting the contact station... I think even non-CW ops 
would like seeing the action revealed before their eyes.

73 Ed W2RF


On 19 Feb 2008 at 13:13, Dave Beumer WA3FDB wrote:

> Thanks Ed  --
> 
> Does CWskimmer have the ability to key the Rig ?
> 
> -Original Message-
> From: Ed Russell [mailto:[EMAIL PROTECTED] 
> Sent: Tuesday, February 19, 2008 2:58 AM
> To: [EMAIL PROTECTED]; FlexRadio List; FireBrick
> Subject: Re: [Flexradio] Attn: CW Skimmer testers and users
> 
> Dave,
> 
> Select WDM in both PowerSDR and Skimmer. That should work. Also VAC 4 is
> required. And be sure to turn off spur reduction (SR).
> 
> 73 Ed W2RF
> 
> On 18 Feb 2008 at 21:41, FireBrick wrote:
> 
> > I did also the first time
> > selecting the WDM Flex audio worked.
> > 
> > 
> > 
> > On 2/18/2008 8:26:28 PM, Dave Beumer WA3FDB ([EMAIL PROTECTED])
> wrote:
> > > Ed
> > > 
> > > I set PowerSDR/CWSkimmer as described .. I get the CWSkimmer error 
> > > "The specified format is not supported or cannot be translated"
> > > 
> > > Any ideas ?
> > > 
> > > Dave
> > > WA3FDB
> > > 
> > > -Original Message-
> > > From: [EMAIL PROTECTED] 
> > > [mailto:[EMAIL PROTECTED] On Behalf Of Ed Russell
> > > Sent: Monday, February 18, 2008 5:18 PM
> > > To: flexRadio List
> > > Subject: [Flexradio] Attn: CW Skimmer testers and users
> > > 
> > > There have been a number of requests to interface PowerSDR to CW 
> > > Skimmer in a wideband mode.
> > > 
> > > To facilitate that I have posted a version of PowerSDR that supports 
> > > direct VAC output of 48khz. This has been tested with CW Skimmer.
> > > 
> > > It is availabe in the SVN branch w2rf/bin/release.
> > > 
> > > There is a checkbox on the VAC form to enable direct I/Q output. 
> > > Only 48khz is supported at the moment, but 96 and 192khz will be 
> > > available in the next few days.
> > > 
> > > In CW Skimmer select the SoftRock-IF mode with an IF of 9600. Also 
> > > enable the CAT connection with PowerSDR.
> > > 
> > > I think you will agree with me that this is a very facinating and 
> > > powerful conjunction of technologies.
> > > 
> > > 73 Ed W2RF
> > ___
> > 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://kb.flex-radio.com/  Homepage: 
> > http://www.flex-radio.com/
> > 
> 
> 
> 
> 
> 




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Re: [Flexradio] multi logging program/ CW Skimmer

[Ed Russell]

This is an interesting setup you have. I am running into similar 
shortages of the COM ports. By the way Skimmer will be adding some 
useful features for contesting use in the near future. But the need 
for com ports will probably still exist. I'm going to try that 
virtual Y.

The current W2RF console only supports Flex 5000 sample rate of 
48khz. I didn't test to see what would happen at other rates :) 

I am testing a version that works with the higher 96 and 192khz 
rates.

73 Ed W2RF


On 19 Feb 2008 at 11:31, FireBrick wrote:

> Still tweaking and experimenting with my multi logging/program control 
> system.
> Between Steve's DDTutilty, and Neal's virtualY program I can have 2 programs 
> communticate bidirectionally with PWSDR simultaneously.
> (by simultaneously, I mean any two programs can receive rig data, or change 
> rig data)
> This allows logging programs for DXCC tracking, and Writelog for contesting.
> 
> But I'm out of com port assignment options.
> I can't use the CWSkimmer to control the rig unless I drop one of the 
> programs and use that comport.
> I can make W2RF console work with CWSkimmer in 48k  decode mode and 
> selecting the WDM Flex audio.
> But it will not change PWSDR frequency due to lack of com ports.
> (Note: running CWSkimmer higher than 48k causes a BSOD and a long wait for 
> mem dump and reboot. Anyone else experience this?)
> 
> I need more than a  com port 'Y', I need a multi tined pitchfork. LOL
> 
> Right now, I have running:
> vCom and VAC 4
> Pwsdr (I can run any version or SVN @192kz)
> DDTutilty (sends proper codes to amplifier for band/ant switching) & 
> (Profilerer)
> virtualY
> Full Bidirectional control with:
> VE7CC CCU Cluster Software connected to the Packet cluster.
> DXBase Logging Program (accepting cluster data from CCU)
> DXLabs Suite (accepting cluster data from CCU) (which included 
> WinWarbler/MMTTY)
> Antenna direction control from DXLabs or DXBase (they use same comport, so 
> only 1 at a time)
> 
> If it's a contest weekend, I'll drop a logtracking and start Writelog in 
> it's place.
> I could probably run 3 programs at once if com port options were not hard 
> coded into the software.
> If we were able to just enter a number instead of selecting from a screen or 
> drop down list.
> 
> My cpu use is 38% (it goes up if doing Winwarbler rtty or psk decoding)
> 
> I think is is about the limit I can do with out more simultaneous com ports 
> systems.
> Thinking about cascading virtualY modules as more than one can be run in a 
> process situation.
> 
> Flex5Ka Pwsdr svn 2001
> Dell 3.2 dual core.
> dual monitors (running out of Screen Space)
> 
> got to look at that FlexLoader and see if it will start all this up 
> automagically.
> I tend to doze off waiting for each module to start. :-)
> 
> 
> 
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Re: [Flexradio] Attn: CW Skimmer testers and users

[Ed Russell]

PowerSDR should be at 48khz sample rate. Skimmer needs to be set for 
WDM audio. And spur reduction (SR) should be off.

73 Ed W2RF

On 18 Feb 2008 at 19:26, Dave Beumer WA3FDB wrote:

> Ed
> 
> I set PowerSDR/CWSkimmer as described .. I get the CWSkimmer error "The
> specified format is not supported or cannot be translated"
> 
> Any ideas ?
> 
> Dave
> WA3FDB
> 
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Ed Russell
> Sent: Monday, February 18, 2008 5:18 PM
> To: flexRadio List
> Subject: [Flexradio] Attn: CW Skimmer testers and users
> 
> There have been a number of requests to interface PowerSDR to CW 
> Skimmer in a wideband mode.
> 
> To facilitate that I have posted a version of PowerSDR that supports 
> direct VAC output of 48khz. This has been tested with CW Skimmer.
> 
> It is availabe in the SVN branch w2rf/bin/release.
> 
> There is a checkbox on the VAC form to enable direct I/Q output. Only 
> 48khz is supported at the moment, but 96 and 192khz will be available 
> in the next few days.
> 
> In CW Skimmer select the SoftRock-IF mode with an IF of 9600. Also 
> enable the CAT connection with PowerSDR.
> 
> I think you will agree with me that this is a very facinating and 
> powerful conjunction of technologies.
> 
> 73 Ed W2RF
> 
> 
> 
> 
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> 
> 




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Re: [Flexradio] Attn: CW Skimmer testers and users

[Ed Russell]

Yes, version 4 of VAC is required.

Set the Driver to WDM-KS. Output to a Virtual Cable, Stereo, 48000. 
And be sure to swich SR (spur reduction) off.

73 Ed W2RF

On 18 Feb 2008 at 20:56, Richard Stasiak wrote:

> Sounds great Ed.  I use Skimmer all the time to monitor the bands.  Do  
> you need to use the latest release of VAC?
> 
> Rick ve3mm
> 
> On 18-Feb-08, at 7:17 PM, Ed Russell wrote:
> 
> > There have been a number of requests to interface PowerSDR to CW
> > Skimmer in a wideband mode.
> >
> > To facilitate that I have posted a version of PowerSDR that supports
> > direct VAC output of 48khz. This has been tested with CW Skimmer.
> >
> > It is availabe in the SVN branch w2rf/bin/release.
> >
> > There is a checkbox on the VAC form to enable direct I/Q output. Only
> > 48khz is supported at the moment, but 96 and 192khz will be available
> > in the next few days.
> >
> > In CW Skimmer select the SoftRock-IF mode with an IF of 9600. Also
> > enable the CAT connection with PowerSDR.
> >
> > I think you will agree with me that this is a very facinating and
> > powerful conjunction of technologies.
> >
> > 73 Ed W2RF
> >
> >
> >
> >
> > ___
> > 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://kb.flex-radio.com/  Homepage: 
> > http://www.flex-radio.com/
> 




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Re: [Flexradio] Attn: CW Skimmer testers and users

[Ed Russell]

Dave,

Select WDM in both PowerSDR and Skimmer. That should work. Also VAC 4 
is required. And be sure to turn off spur reduction (SR).

73 Ed W2RF

On 18 Feb 2008 at 21:41, FireBrick wrote:

> I did also the first time
> selecting the WDM Flex audio worked.
> 
> 
> 
> On 2/18/2008 8:26:28 PM, Dave Beumer WA3FDB ([EMAIL PROTECTED]) wrote:
> > Ed
> > 
> > I set PowerSDR/CWSkimmer as described .. I get the CWSkimmer error
> > "The
> > specified format is not supported or cannot be translated"
> > 
> > Any ideas ?
> > 
> > Dave
> > WA3FDB
> > 
> > -Original Message-
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On Behalf Of Ed Russell
> > Sent: Monday, February 18, 2008 5:18 PM
> > To: flexRadio List
> > Subject: [Flexradio] Attn: CW Skimmer testers and users
> > 
> > There have been a number of requests to interface PowerSDR to CW
> > Skimmer in a wideband mode.
> > 
> > To facilitate that I have posted a version of PowerSDR that supports
> > direct VAC output of 48khz. This has been tested with CW Skimmer.
> > 
> > It is availabe in the SVN branch w2rf/bin/release.
> > 
> > There is a checkbox on the VAC form to enable direct I/Q output. Only
> > 48khz is supported at the moment, but 96 and 192khz will be available
> > in the next few days.
> > 
> > In CW Skimmer select the SoftRock-IF mode with an IF of 9600. Also
> > enable the CAT connection with PowerSDR.
> > 
> > I think you will agree with me that this is a very facinating and
> > powerful conjunction of technologies.
> > 
> > 73 Ed W2RF
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[Flexradio] Attn: CW Skimmer testers and users

[Ed Russell]

There have been a number of requests to interface PowerSDR to CW 
Skimmer in a wideband mode.

To facilitate that I have posted a version of PowerSDR that supports 
direct VAC output of 48khz. This has been tested with CW Skimmer.

It is availabe in the SVN branch w2rf/bin/release.

There is a checkbox on the VAC form to enable direct I/Q output. Only 
48khz is supported at the moment, but 96 and 192khz will be available 
in the next few days.

In CW Skimmer select the SoftRock-IF mode with an IF of 9600. Also 
enable the CAT connection with PowerSDR.

I think you will agree with me that this is a very facinating and 
powerful conjunction of technologies.

73 Ed W2RF




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Re: [Flexradio] 5000A I/Q to VAC or Line Out?

[Ed Russell]

Mike,

I am working on that. It should be ready for test this week. Watch 
here for a post.

73 Ed W2RF

On 17 Feb 2008 at 8:19, Mike Walsh wrote:

> Hi,
> 
> Is there any way to send PowerSDR's raw I/Q input from the 5000A to VAC or
> Line Out in near real time so that it could be also be processed by another
> program?
> 
> Seems like you can only get the processed/filtered audio out in real time
> though it is possible to record the raw I/Q.
> 
> Thanks and 73,
> 
> Mike - ke5akl
> 
> 
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Re: [Flexradio] CW Skimmer works

[Ed Russell]

Are you able to use Skimmer in wideband mode?



On 7 Feb 2008 at 15:40, FireBrick wrote:

> duh, forgot to turn on VAC
> 
> how do I tell it that I'm using a SDR Flex5Ka
> 
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Re: [Flexradio] Living Will

[Ed Russell]

Official W2RF award for "you made my wife laugh" humor.

On 19 Jan 2008 at 5:58, FireBrick wrote:

> Last night my Wife and I were sitting in the den and I said to her,
> 
> 
> "I never want to live in a vegetative state, dependent on some machine and 
> fluids from a bottle to keep me alive. That would be no quality of life at 
> all, If that ever happens, just pull the plug."
> 
> 
> 
> So she got up, closed DXLabs, unplugged the computer&radio, and threw out my 
> beer. 
> 
> 
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Re: [Flexradio] A proposal

[Ed Russell]

Bob,

Count me in. I hope this comes together.

73 Ed W2RF

On 16 Jan 2008 at 22:43, Bob Cowdery wrote:

> Hi all
> 
> If you are not in the slightest interested in delving into some of the
> software engineering behind all the wonderful SDR hardware available
> then please disregard this message.
> 
> The purpose of this message is to gauge interest in learning how to
> apply Erlang to SDR implementations. Anybody who has been following
> along with the messages on the various forums must be aware that Erlang
> is an integral part of some future architectures. I happen to believe in
> its capabilities and therefore want to promote its use. I am not
> implying that what I am doing is in any way the actual implementation of
> that future, just that it's a good base from which to start learning.
> 
> My proposal would be along the following lines. A set of tutorial based
> sessions with supporting software and text. These would be delivered
> over Skype or some other similar forum. The sessions would build up to a
> working radio using the building blocks that I have developed. Each
> component (primarily the Erlang parts) of the architecture would
> therefore be explained in detail and thus the Erlang language would be
> taught by example after perhaps a primer session. The intention would be
> not just to explain what is there but to enable experimentation by
> building new parts to plug into the architecture and explore ways to
> improve and enhance the design.
> 
> I would expect to cover the following topics.
> 
> 1. Why Erlang? Installation of Erlang, dev tools and a language primer.
> 2. Context, how the Erlink-SR architecture fits together. How messages
> are routed.
> 3. The message routing component explained with a test harness to
> experiment with.
> 4. Linking to C code. How do linked-in drivers work. How is data
> marshaled between the Erlang and C sides. An explanation of the Erlang
> 'C' helper library. Supported with simple examples to play with.
> 5. The main data handing components explained and the use of shared
> memory. All these use linked-in-drivers to acquire, process and output
> sample data. Simple test harnesses will be used to exercise these
> components.
> 6. The Mnesia database explained and the radio database API with a test
> harness to exercise the database.
> 7. The Erlang bindings to wxWidgets explained with some simple
> stand-alone UI examples. The integration of wxErlang with Erlink-SR with
> a walk-through of the pattern for creating new widgets and how they
> interact with the system.
> 8. Driving the hardware, a walk through the hardware component and a
> test harness to exercise it.
> 9. Putting it all together. The OTP (Open Telecomms Platform). The FSM
> (the OTP FSM behaviour, not to be confused with anything else going by
> that name) at the centre of the system, what it does and how it does it.
> The system startup and shutdown.
> 10. Running the radio. What's missing and discussions of how to address
> the missing parts and build out new capability.
> 11. A quick look at the Java integration using erlink-j.
> 
> You should come out of this knowing a lot about Erlang and have an SDR
> system you understand sufficiently to be able to experiment with and
> contribute to. A couple of provisos. The system is not finished yet but
> there is enough there to run the sessions and to run a receiver (SDR1000
> only at the moment) under Windows. The C code is not ported to Linux yet
> so if you have only Linux you won't be able to run everything. You will
> need to have had some programming experience to get full benefit but you
> should be able to follow along and try the built examples without any
> previous experience.
>
> Now for the crunch. Obviously, this would involve me in a lot of effort
> and I would be looking to cover some of my time by charging a nominal
> fee per session. I would want to keep that very low, maybe something
> like $10 a session. If there are enough people interested to make it
> viable I will make it happen.
> 
> A final plea. I don't want to start any discussions about technologies,
> operating systems etc. Please don't use this message as a bouncing
> board. 
> 
> 73
> Bob
> G3UKB
> http://www.g3ukb.co.uk  (there is a problem with my ISP at the moment so
> the web site is unavailable, but hopefully fixed soon).
> 
> 
> 
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[Flexradio] Display suggestion: LOCK function

[Ed Russell]

Jack,

Great work on the combo display. There is one more feature that would 
be helpful and probably not that hard to implement. In additon to the 
CENTER button, there could be a LOCK button. When the display is 
locked, tuning would not change the frequency range being shown. 
Instead, tuning would move the filter display and other indicators.

This LOCK feature would allow tuning around in the bandpass of the 
panadapter and/or waterfall display without having the display 
constantly shift and become garbled.

Thanks again for your great contribution.

73 Ed W2RF

On 15 Jan 2008 at 17:15, Jeff Anderson wrote:

> Console resizing is now in my branch (k6jca) of the SVN.  You can 
> increase the display size both horizontally & vertically 
> (independently).  Note, though, that larger displays will require more 
> CPU power, so if you start hearing pops, go back to a smaller size.  
> Controls are in Setup>Appearance>Display.
> 
> Console sizes range from the 'stock' size of 1024 x 624 pixels (h x 4) 
> to 1920 x 1200 pixels.
> 
> Please see me blog ([EMAIL PROTECTED]) for more info.  Also, please 
> answer the *new* poll question regarding resizing!
> 
> Let me know how it works...
> 
> Thanks!
> 
> - Jeff, k6jca
> 
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Re: [Flexradio] Edirol Fa66

[Ed Russell]

I also see a dpc latency of 1000 on vista but don't believe it is 
measuring the same thing as on XP.

If my XP machine shows 1000 latency I will get dropouts.

On the Vista machine I can run very small buffers with no problems 
even though the indicated latency is 1000.

73 Ed W2RF

On 10 Jan 2008 at 9:05, Ross wrote:

> Further to my question, I have used Tim's suggestion and downloaded DCplat.
> On one machine I checked the latency is less than 500micro secs, BUT on my 
> Vista machine it is around 1000
> or slightly more.
> 
> So my question is, what affects latency and how can it be reduced? 
> eg what programs will affect it, or hardware.
> By the way SDR software running or not, has no effect on the DCplat latency 
> results.
> 
> Regards to all 
> Ross
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Re: [Flexradio] SOLAR CYCLE 24 BEGINS!

[Ed Russell]

Not loud = bad? I've had similar results...

On 6 Jan 2008 at 7:25, Lee A Crocker wrote:

> I've worked about 270 countries on CW in the past couple years on 160 80 and 
> 40 using my SDR-1000 and now the F5K..  Guess I missed the fact DX has been 
> bad.
> 
> 73  W9OY
> 
> 
> 
> 
>   
> 
> Looking for last minute shopping deals?  
> Find them fast with Yahoo! Search.  
> http://tools.search.yahoo.com/newsearch/category.php?category=shopping
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Re: [Flexradio] N8VB's vCOM & Vista

[Ed Russell]

N8VB's vCOM works for me under Vista as long as I use the default 
comm mappings.


On 7 Jan 2008 at 9:43, Roger de Valle wrote:

> Ray
> 
> I tried several times but it does not seem to be there yet. I have used the
> Eltima software (which is not free) and it works just fine. 
> 
> Regards.
> Roger VK3ADE
> 
> 
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Ray, K9DUR
> Sent: Monday, 7 January 2008 09:33
> To: Flex-Radio E-Mail Reflector
> Subject: [Flexradio] N8VB's vCOM & Vista
> 
> Has anyone successfully used N8VB's vCOM on Vista?  It is not working for
> me.
> 
>  
> 
> 73, Ray, K9DUR
> 
>  
> 
>  
> 
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Re: [Flexradio] bands and CWL

[Ed Russell]

That explains it. Thanks.

Ed

On 4 Jan 2008 at 13:35, Eric Wachsmann wrote:

> The issue is that we use an audio tone to key the keyer.  This tone has some
> frequency offset.  We do some trickery in the console to ensure that no
> matter what mode you're in (CWL or CWU), the tone is transmitted on the VFO
> frequency.  This means tuning the actual transmitter away by the CW pitch
> though.  As you near the band edge, this becomes an issue since the hardware
> will not transmit "out of band" due to the carried frequency (even though
> the tone would put it in band).
> 
> This is something that we can definitely handle more intelligently in the
> future (i.e. automatically switch mode to CWL when near the lower edge and
> vice versa).  For now, just operate in CWL near the lower edge and in CWU
> near the upper edge (not often for CW).
> 
> 
> Eric Wachsmann
> FlexRadio Systems
> 
> > -Original Message-
> > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> > radio.biz] On Behalf Of Ed Russell
> > Sent: Friday, January 04, 2008 1:27 PM
> > To: FlexRadio List; FireBrick
> > Subject: Re: [Flexradio] bands and CWL
> > 
> > I have noticed this too. When you tune the flex to 7.000.6 in CWU it
> > is actually transmitting on 7.000.0. Go any lower and although you
> > may still show above 7.000 you will be out of band, and the flex
> > won't transmit.
> > 
> > I compared this to my 950sdx. When I tune it to 7.000.0 I am actually
> > transmitting there. However any signals I am receiving will be heard
> > at the cw offset tone, of say 600 hz. This tone does not shift when
> > you change from CWU to CWL (CWr).
> > 
> > I'm not sure why the flex behaves the way it does. I can't figure an
> > advantage, and the downside seem significant.
> > 
> > 73 Ed W2RF
> > 
> > On 4 Jan 2008 at 11:32, FireBrick wrote:
> > 
> > > Welll there is one more issue with cwu and cwl
> > > 160 and 80 meters require cwl to get close to the band edge.
> > > You will not be allowed to transmit if your in the wrong side of the
> > > fundamental.
> > > As that could put you below the band edge.
> > >
> > > Try it. Watch for a Cluster spot at the low end of 160 and 80 meters.
> > > If using CWU, the Flex5K will not transmit if the carrier would put you
> > > below 3.500
> > > I found this during the contest a few weeks ago.
> > > I did a 'cluster qsy' to the station but the rig would not transmit till
> > I
> > > switched to CWL.
> > >
> > >
> > >
> > > On 1/4/2008 10:47:22 AM, Ed Russell ([EMAIL PROTECTED]) wrote:
> > > > CW modes only affect the way you receive.
> > > >
> > > > In CWU (upper sideband, normal cw) higher frequency signals are heard
> > > > at a higher pitch. As you tune UP-frequency, the received signal goes
> > > > down in pitch.
> > > >
> > > > In CWL (lower sideband, also called CWr or reverse) higher frequency
> > > > signals are heard at a lower pitch. As you tune DOWN-frequency, the
> > > > received signal goes down in pitch.
> > > >
> > > > Sometimes for certain types of interference, switching to CWL can
> > > > help in rejecting it, by switching it to the other side of the
> > > > passband relative to the desired signal.
> > > >
> > > > Otherwise it is a matter of personal choice. (I think CWL is counter-
> > > > intuitive.) It
> > > > doesn't affect transmission, so there is no convention
> > > > of LSB on 80, USB on 20, etc.
> > > >
> > > > Hope this helps,
> > > > 73 Ed W2RF
> > > >
> > > >
> > > >
> > > > On 4 Jan 2008 at 5:31, FireBrick wrote:
> > > >
> > > > > I can't
> > > > find the portion of the band designations that would denote that the
> > > > > cw portions 160 80 and 40 meters would/should be in CWL mode.
> > > > > I'm sure it's in the .mdb but I'm missing it.
> > > > >
> > > > > pse and tu.
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > ___
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> > >
> > >
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Re: [Flexradio] bands and CWL

[Ed Russell]

I have noticed this too. When you tune the flex to 7.000.6 in CWU it 
is actually transmitting on 7.000.0. Go any lower and although you 
may still show above 7.000 you will be out of band, and the flex 
won't transmit.

I compared this to my 950sdx. When I tune it to 7.000.0 I am actually 
transmitting there. However any signals I am receiving will be heard 
at the cw offset tone, of say 600 hz. This tone does not shift when 
you change from CWU to CWL (CWr).

I'm not sure why the flex behaves the way it does. I can't figure an 
advantage, and the downside seem significant.

73 Ed W2RF

On 4 Jan 2008 at 11:32, FireBrick wrote:

> Welll there is one more issue with cwu and cwl
> 160 and 80 meters require cwl to get close to the band edge.
> You will not be allowed to transmit if your in the wrong side of the 
> fundamental.
> As that could put you below the band edge.
> 
> Try it. Watch for a Cluster spot at the low end of 160 and 80 meters.
> If using CWU, the Flex5K will not transmit if the carrier would put you 
> below 3.500
> I found this during the contest a few weeks ago.
> I did a 'cluster qsy' to the station but the rig would not transmit till I 
> switched to CWL.
> 
> 
> 
> On 1/4/2008 10:47:22 AM, Ed Russell ([EMAIL PROTECTED]) wrote:
> > CW modes only affect the way you receive.
> >
> > In CWU (upper sideband, normal cw) higher frequency signals are heard
> > at a higher pitch. As you tune UP-frequency, the received signal goes
> > down in pitch.
> >
> > In CWL (lower sideband, also called CWr or reverse) higher frequency
> > signals are heard at a lower pitch. As you tune DOWN-frequency, the
> > received signal goes down in pitch.
> >
> > Sometimes for certain types of interference, switching to CWL can
> > help in rejecting it, by switching it to the other side of the
> > passband relative to the desired signal.
> >
> > Otherwise it is a matter of personal choice. (I think CWL is counter-
> > intuitive.) It
> > doesn't affect transmission, so there is no convention
> > of LSB on 80, USB on 20, etc.
> >
> > Hope this helps,
> > 73 Ed W2RF
> >
> >
> >
> > On 4 Jan 2008 at 5:31, FireBrick wrote:
> >
> > > I can't
> > find the portion of the band designations that would denote that the
> > > cw portions 160 80 and 40 meters would/should be in CWL mode.
> > > I'm sure it's in the .mdb but I'm missing it.
> > >
> > > pse and tu.
> > >
> > >
> > >
> > >
> > > ___
> > > FlexRadio mailing list
> > > FlexRad 
> 
> 
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Re: [Flexradio] New Vista driver for M-Audio Delta-44

[Ed Russell]

I am using the new delta 44 driver under vista. It works fine for 
audio, but I don't have an sdr1000 to test with. The new control 
panel is nice. The only issue so far is that it causes the vista 
sleep function to hang.

On 4 Jan 2008 at 13:05, [EMAIL PROTECTED] wrote:

> For those of you "in my shoes" there is a new Vista driver for M-Audio 
> Delta-44
> 
> http://www.m-audio.com/index.php?do=support&tab=driver&serie_ID=1&PID=ad13e577f5e5f494c721095cefefd71b&OS=45
> 
> P.S.
> My PowerSDR v1.10.03 did not like it.
> 
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Re: [Flexradio] bands and CWL

[Ed Russell]

CW modes only affect the way you receive.

In CWU (upper sideband, normal cw) higher frequency signals are heard 
at a higher pitch. As you tune UP-frequency, the received signal goes 
down in pitch.

In CWL (lower sideband, also called CWr or reverse) higher frequency 
signals are heard at a lower pitch. As you tune DOWN-frequency, the 
received signal goes down in pitch.

Sometimes for certain types of interference, switching to CWL can 
help in rejecting it, by switching it to the other side of the 
passband relative to the desired signal.

Otherwise it is a matter of personal choice. (I think CWL is counter-
intuitive.) It doesn't affect transmission, so there is no convention 
of LSB on 80, USB on 20, etc. 

Hope this helps,
73 Ed W2RF



On 4 Jan 2008 at 5:31, FireBrick wrote:

> I can't find the portion of the band designations that would denote that the 
> cw portions 160 80 and 40 meters would/should be in CWL mode.
> I'm sure it's in the .mdb but I'm missing it.
> 
> pse and tu.
> 
> 
> 
> 
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Re: [Flexradio] Linux

[Ed Russell]

Based on Lee's good experience with Ubuntu I gave it a try this 
morning. I installed it in a VM running under Vista, and also as a 
dual boot on an XP machine. Both went very smoothly. I highly 
recommend this.

You can download Ubuntu from:

http://www.ubuntu.com/getubuntu/downloadmirrors

That will give you an ISO image which you burn to a CD, boot to it, 
and follow instructions. It will automatically set up multiple boot 
if you have other installs on the machine. Just watch out for the 
choice of install disk.

If you want to run it in (free) microsoft virtual PC 2007 you will 
need to follow the instructions here:

http://arcanecode.wordpress.com/2007/10/18/installing-ubuntu-710-
under-virtual-pc-2007/

73 Ed W2RF


On 2 Jan 2008 at 13:30, MICHAEL FREEDMAN wrote:

> I am watching all the info on Linux passing across the Flex reflector.  I 
> have no time to bvegin to learn another computer language but I would not 
> mind getting Linux woreking on a spare machine . What is the simplest 
> approach for a lazy neophyte to get up and running on Linux? What software 
> shoould I start with ?  I would like to at least be able to surf the net and 
> perhaps do word processing. I do NOT mind buying a Linux package of software 
> if it will be usefil because it has a lot of startup programs.  I am out to 
> max my initial efforts  and like I said, I don't mind spending money to do so 
> if it will be of benefit now and down the road. Any help appreciated.
> 
> Mike VE3BGE
> -- next part --
> An HTML attachment was scrubbed...
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Re: [Flexradio] Java console software.

[Ed Russell]

Thanks, John, I'll be setting up both Netbeans and JBuilder on my new 
Ubuntu test machine.

73 Ed W2RF

On 2 Jan 2008 at 8:58, John Melton wrote:

> I can't miss the opportunity to point out that the Sun Java Development 
> kit is also free as is their Netbeans IDE (java.sun.com).  It will run 
> on Solaris, Linux, Windows.  Apple have their own port of the Java 
> Development Kit for Mac OS X and as Netbeans is written in Java it will 
> also run the Mac.
> 
> -- John g0orx/n6lyt
> 
> 
> Ed Russell wrote:
> > This is definitely interesting. Thanks for the input.
> > 
> > 73 Ed W2RF
> > 
> > On 1 Jan 2008 at 13:24, k5nwa wrote:
> > 
> >> I have seen on the Flex reflector mention of using Java for the radio 
> >> Gui and wondered if people knew that Borland has a free version of 
> >> their Java development system, it called Turbo JBuilder 2007. The 
> >> thing that makes it attractive is that it's available for Windows, 
> >> Linux, and OS-X.
> >>
> >> In case anyone is interested here is the link;
> >>
> >> <  http://cc.codegear.com/free/jbuilder  >
> >>
> >> Borland tools tend to have very nice visual tools to generate GUI 
> >> interfaces easily so this tool should be very good for the task, the 
> >> fact that it's identical in all three platforms is also a big plus.
> >>
> >> I just wish they also made "instant Java" pills that one could take 
> >> the learn the language and it's massive libraries. I reminds me a lot 
> >> of Lisp and it's gargantuan libraries, except that Lisp is more fun.
> >>
> >>
> >> Cecil
> >> K5NWA
> >> www.softrockradio.org  www.qrpradio.com
> >>
> >> "Blessed are the cracked, for they shall let in the light." 
> >>
> >>
> >> ___
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> >>
> > 
> > 
> > 
> > 
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Re: [Flexradio] Java console software.

[Ed Russell]

This is definitely interesting. Thanks for the input.

73 Ed W2RF

On 1 Jan 2008 at 13:24, k5nwa wrote:

> I have seen on the Flex reflector mention of using Java for the radio 
> Gui and wondered if people knew that Borland has a free version of 
> their Java development system, it called Turbo JBuilder 2007. The 
> thing that makes it attractive is that it's available for Windows, 
> Linux, and OS-X.
> 
> In case anyone is interested here is the link;
> 
> <  http://cc.codegear.com/free/jbuilder  >
> 
> Borland tools tend to have very nice visual tools to generate GUI 
> interfaces easily so this tool should be very good for the task, the 
> fact that it's identical in all three platforms is also a big plus.
> 
> I just wish they also made "instant Java" pills that one could take 
> the learn the language and it's massive libraries. I reminds me a lot 
> of Lisp and it's gargantuan libraries, except that Lisp is more fun.
> 
> 
> Cecil
> K5NWA
> www.softrockradio.org  www.qrpradio.com
> 
> "Blessed are the cracked, for they shall let in the light." 
> 
> 
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Re: [Flexradio] VNC between linux and windows

[Ed Russell]

I am also setting up an auxillary Linux machine to run the new 
software. This is a great approach. Thanks for the tips.

73 Ed W2RF

On 1 Jan 2008 at 11:02, Lee A Crocker wrote:

> It occurs to me as the development in Linux begins that an easy way to access 
> the new version from a windows desptop is to have a dedicated linux computer 
> and then control that computer from a remote desktop over a network.  I had a 
> spare pristine dual core AMD 4800 computer laying around to which I was 
> intending to add windows.  Instead I down loaded Ubuntu 7.10.  It basically 
> loaded itself with only a few installation decisions.  Ubuntu uses gnome as 
> its desktop default and it already has a VNC server loaded and ready to 
> deploy under "system/preferences/remote desktop", from the standard Ubuntu 
> GUI.
> 
> I downloaded tightVNC viewer (the windows binary file x86_viewer.zip at:  
> http://www.tightvnc.com/download.html)  and installed that package on my 
> windows computer.  I started the vnc server on the linux box and tightVNC 
> viewer on the windows box did the required rigmarole of putting in the name 
> of my linux desktop (in my case it was called lee-desktop:0) and bingo I was 
> controlling my linux computer from my windows desktop.  It took less than 5 
> minutes to configure and get running.  I thought there might be terrible lag 
> but it is pretty responsive.  I am running the linux box on a 802.11b link to 
> a hard wired 100mb link through my consumer grade router.  It would seem to 
> me if you have an old computer laying around just add linux, a wad of memory 
> and you should be able to play with the new version without making virtual 
> machines on dual core windows boxes and all that.  I'm not sure yet how 
> things like VAC or Vcom could be handled, probably through some
>  kind of socket layer protocol but it looks to me like this may be a very 
> easy and interesting way to go especially if you don't have core 2 duo or 
> greater horsepower in your arsenal.  This effectively leverages you into 2 
> processors probably with stuff you have just laying around.  I priced out 
> what it would cost to build a pretty fast linux box on newegg and you can 
> build an AMD dual core box with a cheap hard drive and memory for about 
> $300-400 (no monitor since you can run this thing headless) depending on how 
> much hardware you want to add.  As an advantage you can just add tightVNC 
> viewer to any computer on your network and some means to handle the audio 
> chores like skype and run your radio from anywhere on your network.  I have 
> used skype and windows remote desktop in the past to run N4PY/pegasus in the 
> past and I was able to make keyboard cw contacts poolside.  Windows remote 
> desktop is a real POS but I was able to make it work so I believe this
>  setup will work fine.  I did not try to optimize speed between computers at 
> all but I think there are ways to do that as well.  There are linux desktops 
> that are designed for their small footprint and you could probably set up the 
> data connection as a 1gb link if the computers were sitting next to each 
> other, instead of a 11mb max connection like I am using.
> 
> I did experiment with some of the linux card games to see how jerky things 
> are and there was some small artifacts and I tried some youtube video and it 
> was somewhat jerky so there is optimization that should be done.
> 
> This oughta get your juices flowing for 2008
> 
> 
> 73  W9OY
> 
> 
> 
> 
>   
> 
> Never miss a thing.  Make Yahoo your home page. 
> http://www.yahoo.com/r/hs
> -- next part --
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Re: [Flexradio] 500C OPERATIONAL

[Ed Russell]

Yes it is quite a radio. Glad to have you on board!

HNY & 73 Ed W2RF


On 31 Dec 2007 at 14:58, [EMAIL PROTECTED] wrote:

> Just got the 5000C up and running.
> 
> For those of you who know me, I can only say after just making a few contacts 
> that this radio is definitely a Kachina Radio on "STEROIDS"!
> 
> Great job guys and keep up the good work.
> 
> Happy New Year to all!
> 
> Sherman
> W2FLA
> www.w2fla.com
> -- next part --
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Re: [Flexradio] ModularSDR

[Ed Russell]

Frank,

Thank you for these very useful details. I need to look into John's 
work a bit. I realize that the DttSP libraries are c libraries and 
run on either platform. It is all the other code in PowerSDR that is 
not Console code, and is written now in c#, that I am wondering 
about. What will happen to it in the next version? Will it still be 
in c# on the Windows platform? This does point somewhat directly at a 
development environment choice.

But there is another development environment/tools issue: debugging 
multi-threaded real time processes. This has to be integrated with a 
language compiler or interpreter. And it better be good :)

73 Ed W2RF


On 28 Dec 2007 at 14:54, Frank Brickle wrote:

> 
> On Dec 28, 2007 2:15 PM, Ed Russell <[EMAIL PROTECTED]> wrote:
> 
> ...the
> radio will consist of three discrete components, which communicate
> via hardware and/or software interfaces. 
> 
> Roughly three. There may be quite a few more logical pieces, 
> implementing things like multiple receivers, etc. 
> 
> The Core component communicates with the Console component via the
> CAT command language on a messaging interface, whether comm emulation
> or some other. Provision is to be made for either streaming
> panadapter and meter info, or externally controlling a
> panadapter/meter window. 
> 
> CAT is one path. It's a protocol layer between an application and the 
> Virtual Radio Kernel. 
> 
> 
> With this breakout it is possible to clarify my earlier question,
> which has two parts:
> 
> 1. What will be the development language of the Core DSP and radio
> control component? It is currently a mix of c and c#. Will this be
> remodeled? 
> 
> No, the DSP core is pure C, and has never been anything but. That is 
> not likely to change until third quarter 2009. We're still evaluating 
> what DttSP 3.0 will look like. 
> 
> 2. What will be the development language of the Console component.
> 
> Although users may create their own, I assume there will be one
> "official" UI. What will the development language and environment be?
> It is currently c#. Will this be ported or rewritten in something
> else, perhaps java? 
> 
> For the time being the Windows version will almost certainly be a 
> very close version of the current C# console, while the Linux/OSX/BSD 
> version will be John's new creation in Java.
> 
> Beyond that we're envisioning a completely new structure making heavy 
> use of 3D compositing window managers. John has already made some 
> forays into this territory with his Java console and Sun's MPK20 
> virtual collaboration space. 
> 
> I am suggesting that the search for development tools and environment
> has priority over implementation details, because the latter depends
> so intricately and completely on the former. 
> 
> Understood, but I have to stress again the emphasis here is on 
> protocols, not APIs. One of the reasons for this emphasis is to take 
> pressure off the selection of development tools and environment :-)
> 
> 73
> Frank
> AB2KT
> 
> 
> 
> 




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Re: [Flexradio] ModularSDR

[Ed Russell]

Jim,

I think you have given an excellent and useful breakdown of what kind 
of things will be in the Core component. It will itself be a rather 
complex set of sub-components, that will be linked together by 
different kinds of interfaces than the firewire that links it to the 
hardware, and the (CAT-like) messaging protocol that links to the 
Console.

So my first question can be restated as: In the Core component, how 
will its intricate sub-components -- many of which are real time and 
multi-threaded -- be coded, tested, and debugged?

By comparison the current development is housed almost completely in 
Visual Studio 2003. What will take its place? One suggestion might be 
that any developer can use any tool at hand that he knows or thinks 
is appropriate. This creates a practical problem in that other people 
need to work on the code, both for development and maintenance. 
Imagine the hodge-podge of tools and "specialists" this might 
engender! Even if a few additional tools are needed on the edges, a 
central widely available and known (hopefully RAD) development 
environment is, in my opinion, essential.

73 Ed W2RF

On 28 Dec 2007 at 12:04, Jim Lux wrote:

> Quoting Ed Russell <[EMAIL PROTECTED]>, on Fri 28 Dec 2007 11:15:29 AM PST:
> 
> > Frank,
> >
> > Please excuse my pedestrian approach. I am trying to visualize the
> > overall system including how it will be developed and maintained.
> > Your very helpful comments indicate that in the next version, the
> > radio will consist of three discrete components, which communicate
> > via hardware and/or software interfaces.
> >
> > The Flex 5000 (mostly hardware) component communicates with the Core
> > component (all software) via the firewire interface.
> >
> > The Core component communicates with the Console component via the
> > CAT command language on a messaging interface, whether comm emulation
> > or some other. Provision is to be made for either streaming
> > panadapter and meter info, or externally controlling a
> > panadapter/meter window.
> 
> Since I'm not a developer of this, I'm totally speculating here, but  
> here's my guesses:
> 
> I would assume that there is actually a slightly finer modularization  
> in action here, because both the SDR1K and the F5K need to be  
> supported, as do other interesting hardware platforms like the  
> softrock and SDR-X, etc.
> 
> So, I would assume that there is a/are component(s) that is  
> responsible for managing the hardware interfaces (i.e. formatting and  
> communicating via MIDI for the F5K, via parallel port for the SDR1K),  
> which themselves have a message passing interface from a more generic  
> radio core. This interface, I would assume, would look a lot like the  
> current API(s) invoked by console.cs, except restructured for message  
> passing (i.e. instead of calling "int set_frequency(float frequency)"  
> you'd send a "set frequency" message)
> 
> A question would be whether control of the second receiver board in a  
> F5K is handled as a second instance of a receiver control component  
> (in which case, someone has to arbitrate and sequence the messages to  
> the F5K) or if it's rolled into the F5K control component.
> 
> And, also, I'd assume that the dttsp core(s) is a separate component  
> (since it's always been developed as such and has a fairly clean  
> interface), to which the radio core sends various and sundry messages  
> (set bandwidth, set modes, etc.)
> 
> Multiple receivers would be multiple instances of a dttsp, fed from  
> the same I/Q stream, but generating multiple audio outputs, which  
> would then be mixed/panned/recorded/played back by standard audio  
> software.
> 
> The UI component would then talk to the "radio core" which would keep  
> track of which signals are going where, etc.  At this level (UI to  
> radio core), it appears that the messages are structured along the  
> lines of the CAT commands.
> 
> Jim, W6RMK
> 
> 
> 




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[Flexradio] ModularSDR

[Ed Russell]

Frank,

Please excuse my pedestrian approach. I am trying to visualize the 
overall system including how it will be developed and maintained. 
Your very helpful comments indicate that in the next version, the 
radio will consist of three discrete components, which communicate 
via hardware and/or software interfaces.

The Flex 5000 (mostly hardware) component communicates with the Core 
component (all software) via the firewire interface.

The Core component communicates with the Console component via the 
CAT command language on a messaging interface, whether comm emulation 
or some other. Provision is to be made for either streaming 
panadapter and meter info, or externally controlling a 
panadapter/meter window.

With this breakout it is possible to clarify my earlier question, 
which has two parts:

1. What will be the development language of the Core DSP and radio 
control component? It is currently a mix of c and c#. Will this be 
remodeled?

Is c# available on linux? If not, will the c# part be ported to java 
or what?

A cross-platform RAD environment would be desirable.

2. What will be the development language of the Console component.

Although users may create their own, I assume there will be one 
"official" UI. What will the development language and environment be? 
It is currently c#. Will this be ported or rewritten in something 
else, perhaps java?

Here a cross-platform RAD environment would be highly desirable.

Perhaps answers to these questions are in the process of being 
formulated. But it seems to me that they must be answered 
definitively before actual development can begin.

I am suggesting that the search for development tools and environment 
has priority over implementation details, because the latter depends 
so intricately and completely on the former.

73 Ed W2RF

On 28 Dec 2007 at 10:22, Frank Brickle wrote:

> A good place to start is with the Extended CAT code vocabulary designed and
> implemented by K5KDN. The CAT codes, plus some simple extensions to fetch
> panadapter and meter data, give you most of what you need for a complete
> console.
> 
> You're already most of the way there if you simply have your console code
> print ASCII equivalents to the CAT codes commands to a textfile.
> 
> 73
> Frank
> AB2KT
> 
> On Dec 28, 2007 9:56 AM, guenter <[EMAIL PROTECTED]> wrote:
> 
> > Is there a way to see, test and comment the console (without function
> > behind)
> > before it is ready and integrated to the rest of SDR?
> > And also to understand, how the interface works? May be, someone wants to
> > write his own console.
> >
> > guenter DK1RI
> >
> >
> > Am Freitag, 28. Dezember 2007 12:37 schrieb Frank Brickle:
> > > On Dec 26, 2007 7:34 PM, Ed Russell <[EMAIL PROTECTED]> wrote:
> > >
> > > What will be the development environment under Linux?
> > >
> > >
> > > Whatever you like. Since the system is protocol-based (not API-based) it
> > > isn't dependent on a particular environment or language.
> > >
> > > Likewise, the system isn't biased towards any particular GUI framework.
> > > Different pieces can be written to use different frameworks. However
> > > there's a new console in Java that's pretty close to completion. Java is
> > a
> > > strong contender for GUI framework of choice.
> > >
> > > Many of us still use emacs as a programming editor since you don't ever
> > > need to take your hands off the keyboard to use it efficiently. But I
> > don't
> > > think that's what you're asking :-)
> > >
> > > 73
> > > Frank
> > > AB2KT
> > > -- next part --
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Re: [Flexradio] I'm not a programmer

[Ed Russell]

What will be the development environment under Linux. And what 
Windows development environment will it be ported to?

Thanks,
Ed W2RF

On 26 Dec 2007 at 18:10, Gerald Youngblood wrote:

> Hello Flexers,
> 
> Cecil's note below comes the closest of anyone on this list to capturing the
> strategy.  Let me summarize from FlexRadio's perspective:
> 
> 1) The next generation software will be developed first on Linux and then
> moved to Windows.  The windows move will be through whatever method makes
> the most sense at the time we are ready for the move.  That could be through
> virtualization (VM) or through porting the software.  
> 2) #1 above is exactly how the DSP code we use today (dttdsp) was developed
> and then ported into PowerSDR.
> 3) It would be dumb of us to make a business decision that would force the
> majority of our customers to deal with a more complex solution.  We are into
> simplifying things rather than making them more complicated.  You can take
> that one to the bank. 
> 4) If you hear debate back and forth on technical issues, please don't
> worry.  We are in this to serve those of you who simply want a great radio
> that "just keeps getting better."  As we discuss how to make it better,
> remember that we won't leave you behind.
> 5) Unlike other radios with imbedded DSP chips that will never, ever get
> faster or allow more memory, our customers can upgrade their PC, which
> continues to get cheaper and faster.  That means that we can add more
> capabilities over time that would bog down a typical DSP chip.  In fact, I
> just bought a new Gateway PC with an Intel Quad Core processor for $699.00.
> I upgraded to 3 GB RAM for $60.00 and a high performance DVI graphics card
> for another $34.00.  PowerSDR running at 192 kHz takes between 2-5% of the
> CPU.  Basically, the CPU is bored from all its idle time.
> 6) Just think, how many radios have you ever owned that had the promise of a
> true next generation of software?  Oh, and that includes the SDR-1000 from
> which is no longer in production.
> 7) Remember that we will always keep a stable Official Release that you can
> rely on.
> 
> Hope this helps to clear the air some.  
> 
> Regards,
> Gerald
> President
> FlexRadio Systems
> 
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of k5nwa
> Sent: Wednesday, December 26, 2007 9:39 AM
> To: Flex Radio
> Subject: Re: [Flexradio] I'm not a programmer
> 
> At 09:14 AM 12/26/2007, you wrote:
> >So, in nice, clear, simple to understand terms what I hear you guys
> >saying is: The new stuff is going to be a Linux-only solution, but that
> >with virtualization we'll be able to run Windows apps on that same Linux
> >box.
> >
> >Did I get that right?
> >
> >de Peter K1PGV
> 
> Not all OS's are the same contrary to other's opinion. From listening 
> to programmers on other list there are many features that are much 
> easier to implement in Linux than in Windows, and some things are 
> extremely difficult at best, so the fact that they will be doing 
> their main development in Linux doesn't bother me at all.
> 
> None of the developers have stated that Windows will not be 
> supported, but the pecking order will be first in Linux, then in 
> Windows. It's hard enough to figure out a feature and get it working 
> without also fighting the OS at the same time. Once you got it 
> working on an OS that doesn't impede you then you can concentrate on 
> how to get Windows to work.
> 
> In the end it doesn't matter what we think, the guys making the 
> software work, both volunteers or paid employees will make that 
> decision. I'm not worried about it, the people at Flex are no fools 
> they will make sure that the software is available for the OS most 
> people are using.
> 
> Cecil
> K5NWA
> www.softrockradio.org  www.qrpradio.com
> 
> "Blessed are the cracked, for they shall let in the light." 
> 
> 
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Re: [Flexradio] Flex 5000A CW

[Ed Russell]

For best CW results you should try the latest firmware and SVN. Many 
improvements have been made recently.

I don't think the quad core is too fast. But PowerSDR can be 
sensitive to other apps running on the computer. Also it is possible 
that an internet or network connection could interfere.

The best filter shapes are at 48k sampling rate, but 96k is still 
good. With the your computer you can probably run the buffer size at 
256. DSP RX buffer should be left at 4096, but for CW the TX can be 
reduced to 256 which improves latency. These are the settings I use 
on a 3.2ghz P4 HT, with no problem.

I have found the WinKey connected to a serial port or USB-serial 
adapter gets the best results. However it requires the HV (high 
voltage) version of the winkey.

Hope this helps,
73 Ed W2RF


On 24 Nov 2007 at 18:30, Ed Stallman wrote:

> Hi John
> 
>   Sometimes I wonder if this computer may be to fast for the Flex 
> 5000A , I using a quad core Q6600! I have tried different buffer 
> settings but have never changed the buffer size in setup / dsp / 
> options ... the RX and TX both set at 4096, should I change these 
> settings ? Looking under DSP / Keyer  the primary is 5000 and the 
> secondary is None. I do have a COM1 on the computer, would like to 
> know what pins to connect the paddle and also can the winkey be 
> connected to the serial port ? as for firmware, I have tried them 
> all, ver 1.1.1.1 is the one working best  for me.
> 
> Thanks Ed
> 
> 
> 
> 
> 
> 
> 
> 
> 
> At 05:25 PM 11/24/2007, you wrote:
> >Ed,
> >
> >A few things to try for the CW.   First , unless your PC is really fast,
> >suggest increasing the buffer to at least 512.   If your PC has a serial
> >port, connect your paddle to the serial port rather than the Flex 5000 box.
> >Also for some computers it seems there is a bug in the software which
> >requires that you set the secondary CW port to NONE.
> >
> >I have reported this secondary port issue as a bug, but since it seems to
> >affect so few people, it is not recognized as a bug so has not been fixed.
> >Eric says he can not reproduce the problem.  There was a past fix that
> >corrected this issue for many, but no luck here.
> >
> >If using the Winkey, make sure the Iambic is Unchecked.
> >
> >I have made 500+ cw contacts with the Flex 5000A using the paddle to the
> >serial port.   If I connect the paddle to the back of the Flex 5000A, I will
> >also get an occasional missed element here and there.  Works fine to the
> >serial port, assuming your PC has a serial port.   Eric has not been able to
> >reproduce this bug either.  I'm hoping new firmware will help.  Expecting an
> >updated firmware version soon.
> >
> >I've had good  results with minimal latency at sample rate of 96K and 1024
> >buffer on a Pentium 4 pc.   I think it's time to upgrade the motherboard and
> >cpu to a dual core.
> >
> >
> >
> >73  John,  N3WT
> >
> >
> >-Original Message-
> >From: [EMAIL PROTECTED]
> >[mailto:[EMAIL PROTECTED] Behalf Of Ed Stallman
> >Sent: Saturday, November 24, 2007 4:56 PM
> >To: flexradio@flex-radio.biz
> >Subject: [Flexradio] Flex 5000A CW
> >
> >I've been working CW on 30/17M using CWX menu on powersdr v1.10.4 SVN
> >1754, buffer 256, sample rate 48k ..CWX works fine but would like to
> >shorten the long weight between words, each space stroke is to
> >long!  I have connected my paddle to the 5000 but that's not working
> >well, it stops sending until I let up on the paddle and start again.
> >So now I install my winkey USB , The winkey is sending perfect CW
> >listening to the sidetones from the winkey internal  speaker!  whats
> >coming out of the Flex 5000A sounds like random characters, I have
> >the Iambic unchecked wail using winkey. I have also tried the winkey
> >on a second computer with the same results. To confirm whether the
> >problem is with the winkey or the 5000A , I tried the winkey with my
> >TS 2000 and all works fine as it did before. As a last effort, I
> >tried powersdr v1.10.3 SVN 1606 with no luck. Any Suggestions?
> >
> >Thanks Ed
> >
> >
> >___
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> >FlexRadio@flex-radio.biz
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> >Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/
> >FlexRadio Knowledge Base: http://kb.flex-radio.com/
> >FlexRadio Homepage: http://www.flex-radio.com/
> >
> >
> >
> >
> >--
> >No virus found in this incoming message.
> >Checked by AVG Free Edition.
> >Version: 7.5.503 / Virus Database: 269.16.6/1150 - Release Date: 
> >11/24/2007 5:58 PM
> 
> 
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_

Re: [Flexradio] 5000A...New Transceiver ...!!

[Ed Russell]

I've been telling you since day one to do SVN :)

On 16 Nov 2007 at 12:49, Bill Winkis wrote:

> Thought That Would Get Your Attention ...
> 
> I've had my 5000 for a couple months and have been very happen with itI 
> have been using the "On The CD" SVN, etc...
> So this AM I decided to bring all uptodate ..
> I installed -The latest SVN via Tortorise
> Installed the latest drivers, and the latest firmware..
> 
> And WOW its a new radio ... a dozen minor issues were cleared up with the 
> stroke of a key!!!
> 
> So the bottom line is keep your system up todate with the latest releases, 
>  Hey...you can thank me later for the hint
> 
> -Bill
> [EMAIL PROTECTED]
> 
> http://www.kc4pe.com/pix.htm
> 
> 
>  
> 
> 
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Re: [Flexradio] 5000A Stopped working ,no receive or xmit now

[Ed Russell]

Eric,

It never happened before I installed the new firmware. Then it 
happened two or three times, and hasn't happened since. I just tried 
to make it happen and can't. I thought it might have something to do 
with synchronizing data between the hardware and software. At any 
rate, my radio is working fine at the moment, with the latest 
firmware and SVN.

73 Ed W2RF


On 16 Nov 2007 at 11:38, Eric Wachsmann wrote:

> Guys,
> 
> Is this something new with v0.1.1.4 or did this happen before too?  If it is
> new, does going back to an older revision of firmware help?  All of the
> older revisions are available on our download page at www.flex-radio.com.  
> 
> 
> Eric Wachsmann
> FlexRadio Systems
> 
> > -Original Message-
> > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> > radio.biz] On Behalf Of Duffy
> > Sent: Friday, November 16, 2007 11:18 AM
> > To: FlexRadio@flex-radio.biz
> > Subject: [Flexradio] 5000A Stopped working ,no receive or xmit now
> > 
> > My 5000A stopped working last night after working the previous night.
> > Steve I also have been experiencing the receive lockup a few times
> > (ssb)and receiver seemed to return after I pushed the PTT again.This
> > started after I loaded firmware 0.1.1.4  Wed to fix the non operating
> > with my heil mic PTT from front panel .  Last night I went to start the
> > radio and after a couple no starts and a reboot the pwrsdr prgrm would
> > run but the receiver is dead execept for some gross oscillation on the
> > panadaptor and a buzzing sound in audio. No sigs on any band including
> > local am broadcast. If I remove antenna, buzzing stops and oscillation
> > goes away and panadaptor grass level is at bottom of screen. XG2
> > generator produces no sig and a small amount of oscillating . No rf
> > power out on xmit. This suckka is dead.
> > I have also had to leave a message for support today as no one answers
> > this afternoon also.  Are there that many 5000 's dying ?? Waiting for
> > service with a dead 5000A and no more ideas. Duffy NA6MM
> > 
> > 
> > ___
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> > FlexRadio@flex-radio.biz
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> > Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/
> > FlexRadio Knowledge Base: http://kb.flex-radio.com/
> > FlexRadio Homepage: http://www.flex-radio.com/
> 
> 
> 
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Re: [Flexradio] 5000A won't fully return to receive...

[Ed Russell]

Steve,

When the receiver is hung up, is there a wobbly pattern stuck on the 
panadapter, and do you hear a hum no matter where you tune?

I saw this a couple of times with the new firmware, and had to 
restart the 5000 hardware. But it seemed to go away after a few 
reboots.

73 Ed W2RF

On 16 Nov 2007 at 8:20, Steve Kallal wrote:

> I also had problems reaching phone tech support yesterday.
>  
> I've got a problem with my 5000A that is getting more frequent. It doesn't
> return to receive fully. It gets stuck in a weird state where it can still
> transmit, but it is like the receiver is disconnected from the antenna, or
> the receiver is frozen. At first I thought it was strictly a CW issue. But
> last night it happened on while testing MixW and PSK31. The only solution is
> to exit PowerSDR and reboot the 5000A itself.
>  
> Last night it happened to me several times. I also tried the new firmware
> last night, so I don't know if that had anything to do with it. I also
> swapped out Firewire cards, but the problem still persisted. It even
> happened once without even transmitting. It went into that weird state while
> idling in receive.
>  
> I hope this is a software fix and not a new defect in the 5000A hardware. If
> this problem would go away, it would be a perfect rig. Earlier it only
> happened while pushing the QSK to the limits. Now it happens in other modes.
>  
> 73,
>  
> Steve N6VL
>  
> -- next part --
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Re: [Flexradio] Firmware Update v0.1.1.4

[Ed Russell]

Eric,

The CW improvement is FB!!! I'm running now 48khz/256 with DSP at TX 
256/RX 4096. No truncation of first dit seen. No dropouts. Very good 
TX/RX turnaround. But the most important thing... works and feels 
great!

73 Ed W2RF



On 14 Nov 2007 at 10:48, Eric Wachsmann wrote:

> We have made significant progress on several FLEX-5000 firmware issues over
> the past several days.  Special thanks goes to Bob Tracy, K5KDN and Dale
> Boresz, WA8SRA for their help above and beyond the call of duty in digging
> into these issues.  Thanks also to the others that helped test the Beta
> firmware versions.  This new version (v0.1.1.4) addresses the following
> issues (seen in v0.1.1.2 and v0.1.1.3):
> 
>  
> 
> PTT or CW locking up (then no input works including front panel power
> button)
> 
> Intermittent RF output
> 
> 400kHz I2C issues
> 
>  
> 
> Now that we have addressed these issues, we have moved back up to the full
> 400kHz I2C bus speed for maximum performance.  We would appreciate feedback
> on this latest version once it is posted to the website (expected this
> evening).
> 
>  
> 
> We also have made some improvements to the PowerSDR software.  You will
> notice a new selected antenna display on the front panel (above the clock)
> with the latest SVN version.  This feature comes along with several
> computational optimization improvements and a few CW fixes for the SDR-1000.
> For those of you that haven't already jumped on the SVN bandwagon, jump on
> board and give it a try.  It's fun!  The TortoiseSVN guide on our download
> page gives the details on how to get setup to check out the latest Alpha
> code in real time as we continue development.
> 
>  
> 
> In case I don't have another chance to address the reflector at large, allow
> me to wish everyone a very warm and cozy Thanksgiving holiday.  I, for one,
> am very thankful to have such a great customer base.  Without the efforts of
> so many of you volunteering so much time on so many fronts and submitting
> bug reports, we would not be the same company that we are.  So thank you!
> You are appreciated.  Don't have too much turkey and wrap an arm around any
> aggie fans (trust me.they'll need it).  ;)  Have a wonderful holiday.
> 
>  
> 
>  
> 
> Eric Wachsmann
> 
> FlexRadio Systems
> 
> -- next part --
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[Flexradio] TX on 75m 80 % of the time

[Ed Russell]

I have been seeing this exact problem on 20 meters. The rig appears 
to be transmitting proper CW, even the monitor sounds right, but 
there is NO RF OUT for the duration of the TR relay closure. Once it 
opens and closes again, transmission resumes.

Since you, Jim, and Firebrick reported this on 80 meters, I decided 
to test there. I found the same thing. About 1 in 5 characters are 
dropped. 

On 20 meters the problem is much more rare, about 1 in 100. I had 
wondered how it could be debugged. But on 80 it happens so regularly 
it should be easy to find the problem :)

73 Ed W2RF

>   Hello Gents
> 
> What's happening here is on 75m only, the Flex 5000a only go's into 
> TX 80% of the time. The other 20% the powersdr SWR meter is showing a
> 50.1.1 SWR and 0 watts out. to confirm that it's not my antenna I used a
> dummy load with the same results.. I noticed this wail using SSB on 75m ,
> someone would ask a question, I would reply, then I would hear them say
> "were did you go Ed"  What I am doing to test how often the happens, using
> a dummy load, is clicking the tune tab repeatedly and  watching either the
> SWR or power out on the power sdr. ( I have the tun set to 20 watts) Now
> like I said 2 out of 10 times I see either the 50.1.1 or zero watts out...
> Wail clicking the TUN tab and watching the FWD-PWR , I see 0 watts, then a
> short  delay before showing the 20 watt!  Am I missing something in the
> software ? is there a delay setting for keying the amp before the 5000
> keys that may be set to high? has any one else noticed this on 75m?
> 
> Tnx Ed N5BLZ
> 
> 
> ___

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Re: [Flexradio] FWIW - My TX latency measurements

[Ed Russell]

Al,

I've done some tentative receive measurements on a Flex 5000. With a 
digital scope I monitor WWV symultaneously on an analog radio and on 
the  Flex, and measure the tick delay.

At 48k/256, with 4096 FFT, I get around 230ms latency. CW turnaround 
takes 50-100ms additional. CPU utilization is about 15%

I also disclaim authority. Anyone else have 5000 numbers?

73 Ed W2RF

On 5 Oct 2007 at 16:20, a.groff wrote:

> Out of concern and curiosity, I decided to measure my TX Latency from 
> mic input or VAC input through PowerSDR. to the TX I & Q signals.
>   The hardware: SDR-1K, AMD 3300+ CPU 1gb ram (CPU utilization < 10%) , 
> on board sound card, D44 sound card & Ozy/Janus sound card.
>   The software: PSDR 1.10.3, Audacity 1.2.5, VAC 4.08
>   With external cables and 'Y's, I setup Audacity to capture the mic 
> input to PSDR on Left stereo channel and the PSDR TX I output on the 
> Right stereo channel. I then recorded brief transmissions with Audacity 
> and measured the delay between the left channel (mic/VAC) the right 
> channel (TX I or Q).
> 
> In the first test series I measured delay for the O/J mic input to O/J 
> TX I output.  For the second series I measured delay for D44 mic input 
> to D44 TX I output.
> Mode LSB,VAC off, 48000 BPS sample rate
> Sound Card   SC buffer   DSP buffer  delay
> O/J 2048 4096   270 msec
> O/J 2048   256   120 msec
> O/J 256 256 40 msec
> 
> D44   2048  4096   310 msec
> D44   2048256   160 msec
> D44   256 256 Failed. (no signal 
> through put )
> 
> For the VAC port latency tests, in the PSDR VAC setup form, I selected 
> the D44 3/4 sound card as the input ( no VAC cable ), the measured delay 
> was therefore from the D44 mic input, through the AC channel of PSDR and 
> out the O/J TXI/Q. 
> Mode DIGL,VAC on, 48000 BPS sample rate
> VAC-O/J2048   4096  320 msec
> VAC-O/J2048   256155 msec
> VAC-O/J256 256190 msec
> VAC buffer size seemed to have little effect on latency for this test.
> 
> Immediately AFTER toggling TUNE ...
> VAC-OJ 2048   4096 2450msec ( yes 2450 
> msec ! )
> (toggling VAC restored original measurement.)
> 
> Next I included the actual VAC software (v 4.08) in the latency test. In 
> this test I routed the test signal through the D44 3/4 sound card, an 
> audio repeater, and a VAC channel to the VAC input of PSDR and out to 
> the O/J TXI/Q.
> VAC-O/J2048 4096   900 msec
> VAC-O/J2048  256450 msec
> VAC-O/J256256390 msec
> Again the VAC buffer size seemed to have little effect on the TX latency.
> 
> Disclaimer...  This is a sample of 1..  Different CPU's will have 
> different latency... Small buffer sizes have other (undesirable ? ) effects.
> 
> I would be interested in hearing other measurements. 
> 
> YMMV
> 
> AL, K0VM
> 
> 
> 
> 
> 
> 
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