Date: Sun, 9 Dec 2018 08:22:45 -0700
From: Jim Garland <4cx250b@miamioh.edu>
To: Bob Maser <bob.maser@gmail.com>, jimw7ry@gmail.com
Cc: amps@contesting.com
Subject: Re: [Amps] Input relay for QSK amp
<Jim, You're right in principle, of course. The problem is that a
<well-designed amplifier relay circuit shouldn't depend on what
<transceiver is used. The amplifier itself should be immune to
<hot-switching in all situations.
<Jim W8ZR
## Ok, what happens on VOX SSB ?? Some xcvrs output RF
a lot faster than others. And the 0-30 msecs delay adjustment on my
yaesu FT-1000-MP MK-V only works on CW mode.
## One fellow on another forum mentioned that his new yaesu FTDX-3000
when run on VOX SSB, has a tendency to fry the relay contacts on his L4B
and L7 amps, which are 3PDT mech types, with 15 msec operate time. His
conclusion is the 3000 xcvr outputs RF on ssb vox, a lot quicker than any of
his
other xcvrs. The only fix is faster TR relays in the amps with 3 pdt
relays.
Jim VE7RF
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