> Greg, You are really on to something here, very interesting.
> Your message is very timely because I am working on just that same
> scenario in my homebrew amp. So far I have measured the
> vacuum antenna
> relay, the input relay and the times in the FT-1000 MP
> transceiver. I've found
> the vacuum relay switches in 10 ms, the input in 3 ms, and
> the transceiver
> keying line to the amp goes low 2 ms after the cw key is
> closed. ...
Hi Rick,
Sounds good. I wonder if you are planning to write up your findings in any
more detail? My Amp Supply Co LK550 eats vacuum relays for breakfast on QSK
but I'm hoping to mod it and designing a homebrew QSK amp that hopefully
will have a lower appetite. I'm going to have to rig-up the scope to check
out the sequencing, so timing charts would be handy.
73 all, and thanks for the wonderful tips on HV capacitors, transformers,
bias and a zillion other amp things. I'm sure I'm not the only lurker who
appreciates those who take the trouble to explain stuff in careful answers
to others. Cheers!
Gary ZL2!FB www.g4ifb.com
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