John Sinclair wrote:


Well, I got my PCAS MRX back from ZAON, they added
a EMI filter, but it's still breaking squelch on 123.3
& 5. So, I added a choke filter and she's quiet as
a mouse on ships power. The choke has 4 little coils
(2 in each power lead) with a capacitor going between
them. Can find out the exact description if anyone
want's it.
JJ
PS, I also added a sheet of black plastic (x-ray film)
to cut down reflections and extended it back to act
as glare shield.....slick as snot.


John's choke is a real overkill, but it is "guarranteed to work".
Coils are JW Miller & Bourns FB20010-3B-RC (DigiKey M8694-ND) cost
about 70-85 cents each depending how many you buy. Capacitor is a
standard ceramic 0.47 microFarad. I may have used 1 uF. I do not have
part number, but there is nothing particularly special about it (just
do not get one rated for 1kV ).

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Best I can do for schematic is above. Put it as close to the noise
generator as possible.

Cheers,

Henryk Birecki