I agree that the T-R delay could be improved on cw. I have noticed the
latency through the receiver also causes some "timing' problems with
stations. The delay of the signal through the receiver is noticeable. I
put a Yaesu FT-920 next to the SDR on receive and transmitted cw with
another transmitter and the SDR is always a few milliseconds behind. The
lag is noticeable enough that it is easy to lose the sync of a dx
contact. In essence the SDR is still processing the other stations
signal after he has stopped transmitting.
73,
Dale AA5XE
Richard Stasiak wrote:
On Mar 22, 2006, at 11:27 AM, Lee A Crocker wrote:
The performance killer is the transmission lag, that
is the time between the last keypress, and when the
radio is fully back in the receiving mode. If you run
any speed and work DX this is a problem.
This is a timely post for me, Lee. I experienced this exact
situation last night working 20 M cw.
I had the turn around times down to a minimum with my SDR but with
the delays I felt the timing with the DX station was off. The
contact needed a couple of unnecessary repeats to complete it.
I have also tried using MOX for cw in these situations by programming
one of the buttons on my Shuttle for the MOX function.
But there is still too much of a lag switching back to rx.
Frankly if it would speed up the T_R of the
radion you could do away entirely with any sidetone
generation, internal keyer in the software etc, and
just let me use an external keyer to do these
functions, or at least make this an option to be
turned on and off.
I second this request.
73
Rick ve3mm
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