Did the fault occur immediately after a band change? I occasionally see
a slight power overshoot from my K3S on the first transmission after a
band change. Perhaps a transmit gain calibration is in order. I use
the K3 Utility for this purpose and a known good 50 ohm dummy load.
The radio will do the rest.
73
Bob, K4TAX
On 3/30/2024 7:37 PM, [email protected] wrote:
Message: 7
Date: Wed, 27 Mar 2024 10:18:59 -0400
From: Pete Smith N4ZR<[email protected]>
To:[email protected], Elecraft Support<[email protected]>,
Elecraft List<[email protected]>
Subject: [Elecraft] Erratic KPA-1500 behavior
Message-ID:<[email protected]>
Content-Type: text/plain; charset=UTF-8; format=flowed
This morning, starting the CWT,? every few transmissions my amp was
faulting with the indication of excessive driving power (~67 watts vs 33
watts normally).? Each time, it would fault once, then operate normally
for a dozen or so transmissions before the next fault. Then, about 10
minutes into the hour, the faults stopped happening.? The K-3 showed 33
watts throughout
I checked the KPA-1500 log, and all it shows is the "power input"
fault.? What could be causing this erroneous indication of excessive
drive?? A sticky relay?
-- 73, Pete N4ZR
--
"You only grow old when you run out of new things to do"
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