[Elecraft] oscarvais at speedy.com.ar

[Joe Subich, W4TV]

Oscar, 

Looking at the FL-2100z schematic (*** NOT *** the original 
FL-2100B) shows that the relay line is about +18V DC.  You 
should be able to use "Key Out" directly but since there 
are multiple relays involved, I would recommend a buffer 
like the Ameritron ARB-804 or an intermediate relay for 
safety.  

Note: the original FL-2100 and FL-2100B had negative voltage 
on their key line and require a relay/buffer when used with 
the K3. 

73, 

   ... Joe, W4TV 
 



> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of 
> oscarvais at speedy.com.ar
> Sent: Saturday, March 27, 2010 4:41 PM
> To: Elecraft at mailman.qth.net
> Subject: [Elecraft] oscarvais at speedy.com.ar
> 
> 
> I need to connect my amplifier fl2100z with K3, direct 
> connect to key out  to RY the amp FL2100Z or I have to put a 
> relay, please i need help and thank you very much.-
> 
> LU1XS, Oscar 
> ______________________________________________________________