[Milsurplus] FT-241 surplus LF crystals chan - freq list ?

[Hubert Miller]

I appreciate your effort, but...this chart is not useful, I think, because the LF frequencies are rounded off the whole kHz.
I am actually sort of rethinking the whole idea of picking out any 'good' freqs anyway. Considering the halflife of the group
at around 70 years, it seems to me the failures will proceed steadily. I do not recall any of the early 'conversion' articles 
mentioning the high failure rate, so it has a time factor. I certainly at this time wouldn't attempt one of the conversion book
lattice filters, even if I wanted to replicate the circuit; I'd worry too much about one of the 4 to 6 crystals quitting on the job.
I was kinda thinking of crystals around 455 or 465 ( or is it 470 ?  ) for add-on single crystal filters, or replacement use for same,
for receivers. But the high failure rate has me thinking now, maybe I should just not bother with these.
I read online some suggestion to refasten the wires plated to the quartz with some kind of conductive glue, but no one had 
apparently actually tried this. Dunno if I want to spend time on that effort. Oh well...at one time, I thought these crystals were
really a swell thing. 
-H 

>Hue, 
Here's and old surplus ad that I depend upon:
.................
Regards,
Al