Have you checked the T/R switch on the KPA3 board itself?
Check D7, D8, D9 and D10 also R20, R7 L3, L7 etc. for
proper bias voltages on the diodes in TX/RX.
73,
... Joe, W4TV
On 2025-01-21 11:58 AM, Martin wrote:
Elecrafters,
i finally took the time to replace the relay on the KPAIO3A, but the
problem persists. When i demand more than 12W power, the K3 goes deaf
and there is no power. Reducing power to 12W or less brings RX back to
life and i have power.
So, what are my next steps? Any advice welcome.
--
73, Martin
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