[Boatanchors] KWM-2A Low RF Output

[Radio AI2Q]

*Jeff, using your oscilloscope, or perhaps an RF probe, take a look at 
the rigs' driver chain to ascertain RF levels there. K9BWI and I 
repaired many an FRC-93/KWM2A rig in 'Nam, and you only need to be 
methodical. Check plate and screen voltages on all transmitter chain 
tubes, too. Look for faulty coupling caps, etc. I still repair an 
occasional KWM-2 here, and they're nice rigs. I have a KWM-1, too! Hi Hi.
*

*Vy 73, /AI2Q/, Alex (Vietnam veteran and 21st Century Progressive)*


on 1/27/2021 3:19 AM, n2lxm at juno.com wrote:
> Good Evening All,
>
>          Any Collins KWM-2A guru's out there. My KWM-2A is now only
> putting out about 20 - 25 Watts on all bands. Check on a Bird model 43
> watt meter and 2-30 MHz 50 Watt slug, into a Heathkit Cantenna. Checked
> all the voltages, they seem correct. But just not getting full output.
> Just for grins and giggle's I swapped out the finals and driver tubes no
> improvement. Any suggestions as to where to start looking.
>
>
>                                                      Jeff N2LXM
>                                            Amateur Radio Operator
>                                                        American
>                                                          Patriot
>                                       Proud Father of Two US Marines
>
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