[hpsdr] PowerSDR digimode TX -> RX hot switching

[Riho B.]

Hello,

I hear a srtong short signal spike right after ending of digimode 
transmission. If Mecrury's RF cable is
disconnected then the signal spike dissapears. The singal spike is a 
steady tone which actually is the end
of RTTY transmission in my cace. It seems like T/R switching sequence is 
not very good in digimodes.
My subjective opinion is that PowerSDR receivesRX command sent by 
digimode program, T/R relays
are going to RX  despite it's not an actual end of transmission.  It has 
been there since the beginning as
far as I remember with all setups I've been used.

My current HPSDR setup is as follows:
*  Ozy, TAPR Mercury, TAPR Penelope. All with latest firmware.
*  PowerSDR v1.19.3.4 baseSVN 3444 (W5WC -9/11/11)
*  P4 3GHz, 1GB RAM
* shrinked down Windows XP PRO
*  com0com virtual serial ports
* ESI Audiotechnik virtual audio cables which came along with ESI @Juli 
soundcard.
* Home made T/R switch, drived by Penelope.

All is running fine. DPC latency is around 70 µs all the time when all 
neccesary things are running
which seems very good for real-time streaming.


As digimde fan I hope we can resolve this, hi.



Regards,
Riho, ES7AAZ.







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