[Elecraft] KPA 100 Alignment Question

[Vic Rosenthal]

david.douglass at optusnet.com.au wrote:

> I assume this means I connect the +lead of the DMM to + terminal of the PSU, 
> and the -lead of the DMM to +pin of the power connecter where it enters the 
> radio?? Is this correct??

Yes.  Make sure it is set up to measure current, not voltage.  Often 
this means connecting the test probe to a different jack on the dmm.

> Just for interests sake, what am I actually doing at this stage of the alignment?

You're measuring the current drawn by the transistors as you adjust the 
bias voltage.  This sets the proper operating point for the transistors 
so that they will not burn up and will produce a reasonable amount of 
power with an acceptably low amount of distortion.

-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco