[Elecraft] new subscriber and first question

[Vic K2VCO]

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/