I have a K1 with the 4 band filter board (40,30,20,15). I recently removed this board and tested a two filter board (80,17) that had come with this radio. The second board worked fine but the problem I have is that when I replaced the original filter board and reconfigured the band settings, something changed and the received signals on 30 meters are very weak and seem to be heavily attenuated and the transmitter will only load to .1 watt. The problem is specific to 30 meters only as the other bands are working properly. I have checked the pins on the filter board and they seem to be o.k. I inspected the board and don't see any components that could have been moved or damaged.
The second issue I have noticed is a pulsing noise in the receiver that affects all bands. If I touch the top of the radio case, I can get the noise to stop. I have eliminated my power source as a possible cause.
Any ideas?
Thanks,
Quinton NU7Y
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