[Milsurplus] Let's appreciate crystals

[Mike Feher]

Piezo electric transducers are still being produced in large quantities for sonobouys for ASW use. If the market was there, it would not be difficult to make them for other applications. 73 - Mike 

Mike B. Feher, N4FS
89 Arnold Blvd.
Howell NJ 07731
908-902-3831

-----Original Message-----
From: milsurplus-bounces at mailman.qth.net <milsurplus-bounces at mailman.qth.net> On Behalf Of hwhall--- via Milsurplus
Sent: Tuesday, October 28, 2025 9:55 PM
To: Bob Camp <kb8tq at n1k.org>
Cc: Military Surplus net List <milsurplus at mailman.qth.net>
Subject: Re: [Milsurplus] Let's appreciate crystals

Back in the very early radio days, there were hams who were making their own crystals. How many? I don't know but the radio magazines of the time had articles on how to do it.

Speaking of crystals, it would also be a cottage industry if someone produced the crystals that were so common in microphones & record players.

Wayne
WB4OGM


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