[Amps] Quick question

[Bill Turner]

ORIGINAL MESSAGE:

At 04:32 PM 3/21/2006, Will Matney wrote:

>I bought an XO made by Vectron for the military. It's a 10 Mhz TTL 
>output. I thought of using it as a frequency reference. Below is the 
>specs on the tolerances, and what is your thoughts on how good it 
>would be? Sorry, I know this is off topic but an interested in your 
>opinions. Thanks to all in advance.

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The long-term stability of this is more or less average. If you want 
to improve it further, put it in a temperature-controlled 
environment, i.e. it's own box with a separate temp control circuit, 
and run it 24/7. After it settles in it should be satisfactory for 
most ham purposes. Crystals do "age" however, so some re-tweaking 
will need to be done from time to time.

Also check the frequency variation with changes in load. It should be 
stable whether the load is an open or short circuit. If there is a 
change, add one or more stages of isolation.

Bill, W6WRT