RE: TR relay timing, hot switching etc. What is typ time, between talking
into mic on SSB VOX,
and when RF 1st starts to even appear at the output of the typ xcvr ??
On my yaesu MK-V, on CW
mode only, I can vary the delay between internal keyer.... and RF appearing
at the output of xcvr,
by anywhere from 0-30 msecs.... in 1 msec increments. That adjustment allows
for precise external
amp TR relays to get a ..head start... depending on how fast the TR relays are
in the external amp. IE:
will allow for vox cw, when using slow open frame relays..... or sped up,
faster vac relays, or pin diodes
etc, when using qsk cw.
I see no adjustment for plane VOX SSB. Is this a concern..esp with slower
TR relays in an external amp ?
I can add additional delay via the... TX inhibit lead, if required. But IF
the xcvrs natural delay is say 7 msecs,
inserting 7 msecs delay into the TX INHIBIT lead will buy me..nothing. Any
added TX inhibit delay would have
to be longer than what is in the xcvr. IE: xcvr is say 7 msecs, between
coughing into mic on vox ssb, and TX inhibit
delay set to say 15 msecs..or longer..to match the slow TR relays in an
external amp.
I dont see any delay specs on typ xcvrs.... when used on vox ssb. And I
dont mean between coughing into mic...
and full pep output. I mean between coughing into mic....and just a few
watts pep appearing at output of xcvr.
Jim VE7RF
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