Hate to hijack a thread …

On Dec 6, 2:55*am, highlandham wrote:
With your tuneable range ,for 10.100-10.150 MHz you can use any crystal
in the 18.495 to 18.985 MHz range ,probably even a low cost
microprocessor type.

Out of curiosity, what's the difference between the "microprocessor"
type crystals and other crystals? Is it just frequency stability or
is there something more fundamental?