Steve
I measured this a couple of years ago and put the info in my notebook.
As you mention, 8R transitions 15 ms before rf output. It doesn't
transition back again until 5 ms after rf has stopped. The timing
is completely independent of the t-r value set in the primary menu. I
tried it with t-r=.02 sec and t-r =1.0 sec and the timing was the same.
This was in cw mode. I don't have measurements for ssb.
I used the info to see if I needed to make external timing circuits for
a hb transverter I was building. I didn't. And the transverter works fb.
(I did use fast relays though)
Hope this helps.
73,
Lenny W2BVH
Steve Kavanagh wrote:
I read on this forum that there is about 15
milliseconds delay between the transition of the 8R
line from receive to transmit (and hence of the key
out lines in the KPA100 and K60XV) and the beginning
of RF output. I have a couple of questions with
respect to this delay:
(1) Does this apply on both CW and SSB ?
(2) What happens on the transmit-to-receive transition
? Does RF cease before or at the same time as the 8R
line or is there a similar delay ?
Just pondering how to interface various non-elecraft
transverters....can anyone advise ?
73,
Steve VE3SMA
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