[Milsurplus] King KMC 95 Transceiver

[boeing377 at gmail.com]

Jack,

That King HF radio was a bargain at $30. Hope you can restore full transmit
power.

HealthKit had similar reliability problems in their marine radios. They
failed far too frequently. Most failures were corrosion related. Arcing.
Bad contacts. Etc.

MFP varnish seen on military radios mostly solves the problem but no
commercial radios I saw used it.

We put some kind of petro vapor emitter strips in marine electronic gear.
It helped but didn’t totally solve the corrosion problem. We sprayed
silicone oil on the rotary switches. Didn’t degrade their functionality and
kept them free of corrosion.

What worked really well to keep connectors working at sea was to slather
pins threads and sockets with silicone grease. Dow Corning silicone
stopcock grease worked just as well as the more expensive dielectric
grease. The metal to metal pin and socket connections still worked fine. I
think the tight interference fit displaced the grease.

My father, who was a fishing boat captain, wasn’t very romantic about the
ocean. He told me “it wants to sink us, drown us and wreck all our
electronics.”

Mark
AF6IM



On Thu, Aug 29, 2024 at 10:14 AM Jack Antonio <scr287 at att.net> wrote:

> OK, so its not military, but at least it is non-amateur.
> And its not a boatanchor, so I decided to ask here.
>
> Anyone have any experience with the King KMC 95 HF transceiver?
> I have one, with the service manual. It receives well, the
> synthesizer appears to function, but the transmit PA is bypassed,
> rendering it a 5 watt radio.
>
> Just curious about any experiences with this radio.
> Things such as history, known strengths or weaknesses,
> glitches, that sort of thing.
>
> Upcoming project is to start looking closely at the PA, to
> figure out why it was bypassed. Basic checks have turned up
> nothing obvious.
>
> Thanks in advance
>
> Jack Antonio
> WA7DIA
>
>
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