[wsjt-devel] wsjt-x

[Steven F. <s.j...@ic...>]

Hi Joe,
I tried the latest wsjt-x_exp this evening on Ubuntu 14.04 and it worked great! My regular hopping setup uses gnuradio to read the TS-480's audio from a sound card and write it to a .wav file. I send xmlrpc commands to stop and start recording. I was surprised to find that I could start wsjt-x "on top" of my program, and have it listen to the same sound card that my gnuradio program was recording. 

I see that you intend to add band hopping. That's great! It'd be nice if you'd include the facility to call a user_hardware script before each 2-minute window. I need this to control antenna and filter switches. The next interval's frequency could be provided as an argument to the user_hardware script. 

While you're at it, how about 4 hopping schedules that can be run during a 24 hour cycle? Day, night, and sun rise-set transition windows... That's what I use here, but it's orchestrated by a cron job. It'd be nice to be able to control it from within your slick GUI. It would be sufficient to have 4 rows of band buttons to select the active bands, and set the transition times.

Thanks for the very cool program!

73 Steve k9an

> On May 13, 2015, at 12:05 PM, Joe Taylor <jo...@pr...> wrote:
> 
> Hi Edson,
> 
> PY2SDR wrote:
>> Would it add too much complexity to have the frequency error correction in
>> the audio base band of the decoders? This would prevent having to re-tune
>> the rig and would also allow crystal controlled transceivers to also have
>> frequency error correction.
> 
> This could be done, of course.  For a single-band crystal controlled 
> WSPR rig the number from a "Frequency correction" entry widget (a 
> spinner control, say) could be used to alter the (audio) frequency range 
> covered by the decoder, fix up the reported frequencies of decoded 
> signals, and adjust the frequency of Tx audio tones.
> 
> For some years already, production WSPR versions have included the 
> ability to set a "BFO frequency" to something other than 1500 Hz.  I 
> think that could accomplish the necessary recalibration for the crystal 
> controlled case.
> 
> But under normal circumstances with rig control, I see little 
> disadvantage to retuning the radio.  We have all the tools in place, and 
> they work well.  Several people have been testing JT4 on the 10 GHz EME 
> path in recent weeks, using the automatic Doppler control (both Tx and 
> Rx) now in v1.6.1.  They are delighted with it!
> 
>    -- Joe, K1JT
> 
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