W3LPL and other mentioned the PA temp and sagging power supply.
I didn't think to check the PA temp until later (how much later, I don't
know), If I remember correctly, it was 35C. In both cases, I was operating
in a contest (ARRL 160 and ARRL RTTY RU) with the RF power set to 100w
Sitting in
What was the PA temperature? And how are the fans set in the CONFIG menu.
Bob, K4TAX
Sent from my iPhone
> On Jan 6, 2020, at 12:15 AM, Eric Rosenberg
> wrote:
>
> In the middle of the ARRL 160 contest, my K3 stopped putting out any RF. No
> explanation that I can think of... all of
Alternatively, you might (if you feel comfortable doing so) open the
unit up and inspect it for any foreign debris that may have made its way
into the case, thus challenging the airflow design/volume/velocity.
The PA is in its own shielded enclosure, and thus relies heavily upon
the fans to
Eric Rosenberg writes:
Everything seemed fine until this weekend's ARRL RTTY Roundup. After
being on the air for about 4 hours, once again there no was RF output
Eric,
Sounds like an over temperature problem. Especially if running RTTY at
near full power. The high duty cycle of RTTY can
In the middle of the ARRL 160 contest, my K3 stopped putting out any RF.
No explanation that I can think of... all of a sudden, ZERO watts out
when the radio was keyed, either by software (N1MM+ or WSJT-X) or
pressing the TUNE button. The TX LED was lit, the meter showed audio,
which I could
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