[Milsurplus] [Glowbugs] FT-241 LF Crystals as a Long - Term Investment Instrument

[Hubert Miller]

"Yeah, but....", it passes some - a minority - of the exact same FT-241 family. 
What I'm going to do is, sort aside ones with "good frequencies" for further study. 
The schematics for crystal testers I have seen, are not that difficult, but with my priorities, I just cannot justify spending any hours whipping one up, I have to keep moving
with Job #1. And Job # N+1....
-Hue

>Subject: Re: [Milsurplus] [Glowbugs] FT-241 LF Crystals as a Long - Term Investment Instrument

Hi Hue - I obviously don't know what's going on here, but the crystals in those FT-241 holders (or any other) have a specified operating load requirement and any "tester" looks like a certain complex impedance to the crystal under test.  If they are not matched adequately you may be getting false "fails" as a consequence. (corroded connections etc. not withstanding...) Just a thought..
Tim
N6CC