[sdiy] Black Magic oscillator cans

[Magnus Danielson]

From: "John L Marshall" <john.l.marshall at gte.net>
Subject: Re: [sdiy] Black Magic oscillator cans
Date: Sun, 20 Jul 2003 11:43:22 -0700

> Crystals can be trimmed to an exact frequency with a small variable
> capacitor, either in series or parallel.

When you have a VCXO (Voltage Controlled Crystal Oscillator) you simply provide
CV to a varicap diode sitting in the crystal feedback loop. Crude but
efficient.

Happily it's off the shelf components, which is very fortunate for me.

Cheers,
Magnus