"Michael Black" wrote in message
ample.org...
On Sun, 7 Sep 2008, raypsi wrote:

On Go back far enough, and hams just needed crystals within the band.
They had relatively little need for exact frequencies.

And Novice regulations required the use of Xtal control, a ready
market...

I suspect even if the Handbook did give such details at one time,
little bits may be lost since when something is current, "everyone
knows" things that may not be obvious to someone who comes later.

Tools, techiques, sources for raw or processed materials. WWII
end provided what seemed to be an endless supply of radio
related parts and equipment. Tons of FT-243 xtals, ready to
use or to regrind, etc. I remember when one could find surplus
455kc xtals to make SSB filters; they are unobtanium now.

Pete, k1zjh

Michael VE2BVW