[Elecraft] KX3 RF out voltage measurements...

[Phil Wheeler]

David,

You'll likely get more help if you describe what 
is causing you to think you might have an RF out 
issue with your KX3.

73, Phil W7OX

On 6/7/16 9:49 PM, David Davis wrote:
> I might have an RF out issue with my KX3 but I am not sure how to test it.
>
> I have an Elecraft DL1 and a DMM that I figure I can use to check the RF
> voltages and verify the power out. However, I am not sure of the exact
> process on how to do this. If I am keying the mic on SSB do I need to
> speak into the mic to be able to measure the voltages or just key the
> mic with silence? I would assume I need to be speaking into the mic.
>
> The reason I ask this is because if I just key the mic with silence and
> the radio set for 10W with a input power supply of 13.5V DC I measure
> 4.7mv DC at the TP1 on the DL1 unit.
>
> If I speak into the mic I see voltages from 11 - 18V DC from the TP1 on
> the DL1 unit. It seems to me that I need to be speaking into the mic. I
> figure if I was checking the RF out in CW mode I would need to key the
> keyer in some fashion.
>
> I know this seems like an elementary level question but I would really
> like to verify the RF power out.
>
> Any information is greatly appreciated in advance.
>
> Thanks!
> David
> KG6MTI