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Igor,
Search for Heathkit and Kenwood TL-922 on the net. If you can't find exact
replacement you can buy a v. cap with equal or similar plates and re-plate.
Some hams end up with old v. caps that have 6 or so plates screwed up from
arcing or attempted "filing". It takes about an hour to change out the
plates once you get the device out of the amplifier. I have done it twice.
Re-centering or re-spacing the plates during final reassemble is important.
I have not attempted to dress the damaged plates as a repair but I'm sure it
is completely doable after disassembly.
Surplus Sales of Nebraska has v. caps with similar plates. The may even
have a suitable new replacement. I bought a new Tune cap for an SB-221 from
them. It was actually for a SB-220 but the SB-221 chassis will take either
cap. The 221 cap is 1/2 inch longer that the 220.
If you melt solder well you may consider the Kenwood TL-922 QSK mod designed
by Measures to eliminate hot switching. He furnishes most of the parts for
about $21.00. (He should furnish all except the Vacuum relay and charge
more.)
Bob, N5CNN
bhut@nol.net
**************************************
On Sun, 11 Oct 1998 01:29:16 -0700 (PDT) igor rosky <irosky@yahoo.com>
writes:
>
> I have just lost a 3-500z in TL922, it has also caused a lot of arc
>damage to the load capacitor, which has very fine plate spacing, does
>anybody know if this is still available from Kenwood, or is there a
>suitable substitute that will fit in its place.
>
>Igor
>
Arc damage more likely caused the 3-500Z to fail. That Load capacitor
does not like high VSWR or hot switching from that archaic TX-RX relay.
Kenwood still carries TL-922 parts, check their web page or call
310-639-5300 for the Service Dept.
While you are at it make sure there is no damage to the grid and bias
circuit components.
Cant blame this one on parasitics I bet!
73 Carl KM1H
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