[Milsurplus] Re: [The WS No.19 Group] FT-241A Crystals

[J Forster]

I'm working on redistributing the estate of a SK friend of 40+ years and
today found a couple of chassis that appear to be a crystal filters and
a crystal filter & IF /detector:

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Chassis 1 has 3 IF transformers, one marked 455 KHz, and 4 ctrystals.
This seems to be a home brew filter. The components are cxonnected  IFT
-- 2 xtals -- IFT ---2xtals -- IFT. The crystals are about 1.125 square
and .375 thick and are socketed.  There are no tubes in the thing.
Construction is fair.They are marked: marked:

Chan 42  24.2 MHz & Chan 324  32.4 MHz.  The second pair are likely the
same, but one is missing its name plate.

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Chassis 2 has 2 IF transformers, 6 tubes, 6 crystals in cases as above
and what appears to be an audio output transformer. It's home brew, and
at a guess is a crystalk filter and detector.. Controls are a rotary
switch, two toggle switches, and a pot.  Construction is fair.

The circuit appears to be;

IFT - tube - IFT - xtal pair - xtal pair - tube - IFT - 2 tubes - xtal
pair - tube - tube - output xfmr

The crystals are:

1st pair:     Chan 316  31.6 MHz & Chan 318  31.8 MHz
2nd pair:    Chan  37  23.7 MHz &  Chan 38   23.8  MHz
3rd pair     Chan  37  23.7 MHz &  Chan 38   23.8  MHz

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If you are interested, please email me off list. Thanks for looking,
-John