Problem found. It was an intermittent fault on a bidirectional coupler for a
wattmeter. It finally failed hard. When I took the coupler out of circuit, the
amp behaved itself.
73, -Steve WX2S
On Tuesday, January 11, 2022, 11:33:44 AM EST, Steve Masticola
wrote:
Hi, all,
My KPA1500
Steve: I went through this exact problem until K6XX alerted me to the
likely cause of corrupt TXGAIN calibration. This was discussed
recently and reaffirmed by Elecraft on this reflector. Most likely the
problem originates from transmitting with either 5 or 50 watts with the
K3, which
Is it possible that something is heating or arcing in the device you are
using to match your 43 ft vertical?
John KK9A
Steve Masticola WX2S
Hi, all,
My KPA1500 is throwing a lot of reflected power faults at power levels above
500 watts. The symptom is that the output power (as indicated by
On 1/11/2022 8:33 AM, Steve Masticola via Elecraft wrote:
I know the usual culprits (poor ground, RF in the shack, surge suppressors),
but I wonder if other owners are still having these problems, despite attempts
to fix.
I have grounding and bonding done right, no issues at all like this.
Hi, all,
My KPA1500 is throwing a lot of reflected power faults at power levels above
500 watts. The symptom is that the output power (as indicated by the power
LEDs) zooms up and then the amp faults. An external MB-1 power meter indicates
2000 watts or more peak output when this happens.
I
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