I have a Collins 30L-1 I use with my K3. BUT several years ago (before I got
the K3) I installed a "Soft-Key" kit from ... I think Harbach. Works fine
and solved that problems
73, Mike WA5POK
--------------------------------------------------
From: "Vic K2VCO" <k2vco....@gmail.com>
Sent: Tuesday, September 03, 2013 12:14 PM
To: <elecraft@mailman.qth.net>; <dbasb...@comcast.net>
Subject: Re: [Elecraft] new subscriber and first question
No, the K3 CANNOT switch a negative voltage for keyout! It is a
solid-state circuit which is quite robust (+200v at 5A), but only for
positive DC voltages.
K3 schematics are here:
<http://www.elecraft.com/manual/K3_Schematics_Jun_2010.pdf>
On 8/31/2013 3:52 AM, Doug Basberg wrote:
Hello;
I just put together my K3/100 with ATU. What a great transceiver!
Now I need to hook it to my vintage Collins 30L-1 linear amp. The manual
says the K3 can handle up to 200 volts on 'key out'. That might mean I
can
hook up directly to the linear. One question is whether that also means
minus 200v. The Collins has -170vdc on its connector. I was thinking
the
K3 uses relay contacts for the 'key out', but maybe not. Second question
is
whether the K3 schematics are available?
The powerful configurability of the K3 means I have a learning curve to
go
thru. I think this reflector will be a big help. Searching the archives
will probably solve a lot of questions and then there is the 'live'
community. Very good. I also subscribed to the yahoo group.
73s Doug N8VY
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--
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/
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