[ARC5] Need a couple of FT-241A xtals for BC604

[Tom Lee]

Thank you Hue (and J) for the information. Makes sense that moisture would attack the integrity of the plating over time.

— Cheers,
Tom

Sent from my iThing, so please forgive typos and brevity.

> On Jan 11, 2022, at 7:01 PM, Hubert Miller <Kargo_cult at msn.com> wrote:
> 
> The contacts are plated onto the sides of the crystal blank. Apparently due to ingress of moisture over the years,
> the plating lets loose. 
> There is this story, one of these groups had a "group buy" of a big lot of these crystals, and members could elect
> to buy so many of the crystals. I was one of the eager buyers. I discovered, as had others before me, of the very
> high failure rate. I gave away most of mine just to help complete display-only sets of the tank transmitter setups.
> I still have a few of "good" freqs, like 500 kHz maybe, for special use, but at present I really don't have a reliable 
> crystal tester, so the final determination of those can't be done. I know that's not a good excuse. I would be 
> hesitant to use them in ANY circuit now, knowing the clock is ticking for them. Think about those LF SSB filters that
> homebrewers cooked up in the 1950s. I wouldn't bet on their viability at all now. 
> -Hue 
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