[Elecraft] [K3] K3 and Ameritron AL-811H Amplifier

[Vic K2VCO]

It sounds like you are getting no RF to the amp. This is normal behavior for an amplifier 
which is in transmit mode but is not getting any drive.

On 1/10/2012 7:56 AM, Ian Kahn wrote:
> All,
>
> I recently acquired a used Ameritron AL-811H for use with my K3 (until I
> can save enough to get the KPA500).  I seem to be having issue getting the
> amp to respond to key down on the rig.  I have an RCA cable running from
> KEY OUT on the back of my K3 to the RELAY on the back of the amp.  I have
> DIGOUT1 on the K3 set to ON.  The amp is configured for, and plugged into,
> a 240V AC outlet.  When I go key down, either in CW or SSB, I only get a
> plate current of about 120 mA and don't get any grid current.  I suspect I
> have something misconfigured and the issue is operator error, but I'm at a
> bit of a loss as to where to look at this point.  Can anyone offer any
> guidance?
>
> Thanks and 73,
>
> Ian Kahn, KM4IK
> Roswell, GA
> km4ik.ian at gmail.com
> K3 #231, P3 #688
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-- 
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/