On Mon, 25 Jul 2005 16:16:30 -0500 Ben Jackson wrote:

I got a bunch of identically (but cryptically) marked crystals that I
wanted a ballpark idea about so I built the oscillator part of the Pixie
II (up to Q1) and put a scope on it. It was around 20MHz, so I grabbed
my HT and tuned around 20MHz to see if I could find it (this, by the
way, is why you should not borrow the lcd display from your frequency
counter for another project...). What I discovered was several signals
above 20MHz (eg 21.040) that only existed when the oscillator was on.

Could your crystals just be oscillating at 21.040? A real frequency
counter can be really useful in cases like this.

I have some for sale if you, or anyone is interested.

-
-----------------------------------------------
Jim Adney
Madison, WI 53711 USA
-----------------------------------------------