[Elecraft] Strange power problem with KPA1500

Bob Wilson, N6TV n6tv at arrl.net
Sun May 13 16:40:24 EDT 2018


 Sounds like an ALC issue. Do you have CONFIG:EXT ALC OFF?

Also, do you have CONFIG:TUN PWR set to NOR or to a fixed low level?
Instead of switching to CW, what happens if you press OPER on the AMP, then
press (hold) the TUNE button on the K3?  Then immediately try the mic?

Try setting CONFIG:EXT ALC to OFF and CONFIG:TUN PWR to NOR.  Then power
the K3 OFF and ON using the power button on the radio to ensure that these
settings are actually saved (removing power by switching off power at the
power supply does not give the K3 a chance to save its current state or all
settings).

73,
Bob, N6TV

On Sun, May 13, 2018 at 1:16 PM, Carl Yaffey <cyaffey at gmail.com> wrote:

> 1. Select 20m
> 2. Go to 14.305 and select USB.
> 3. Press ATU Tune on amp.
> 4. Press tune on K3S and tune completes.
> 5. Select OPER on amp.
> 6. Speak into mic. Only see 100 watts on amp’s meter. Huh???
> 7. Change mode to CW.
> 8. Press key.
> 9. Power starts out at 100 and climbs up to 1300w or so.
> 10. Switch mode to SSB, speak into mic, and the meter shows proper power.
>


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