Gary,
This evening I set about doing the grounding to the mic socket as you
suggested. I got down on 80m this evening and I am told the transmit
audio is as good as anything any of other radios. No fuzzyiness,
distortion, crackling or nasally sound.
I am pretty happy that this issue which has been plaguing me since I
attached the KPA100 over a year ago appears to have been resolved. I
will test other bands tomorrow to make sure all is well on those also.
Many... many... many thanks. I appreciate your advise enormously.
Regards,
Dave
VK2NA
Gary Surrency wrote:
> Hi David,
> <SNIP>
>
> Is the mic connector grounded? If not already done, the mic connector
> should be grounded. I do this by removing the left side panel and
> scraping away enough green solder mask right next to the threaded part
> of the connector so that I can solder it directly to the PCB ground
> plane. If you remove the PCB coating about 1/4 of the way around the
> threaded portion of the mic shell, it’s enough to allow a good
> soldered connection. A tiny jewelers screwdriver works well for
> removing the resist. Use the side of a soldering iron tip and enough
> heat to get the shell hot enough to take solder and then apply solder
> between the PCB and the bottom edge of the connector shell. Cool the
> threaded mic connector with a damp rag or sponge when done, so you
> don't burn yourself on the hot connector.
>
> Also check your station ground for problems, the coax cables, etc.
>
> <SNIP>
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