I don't have sophisticated instruments, so I did a basic test. Feed 2MHz into
a spectrum analyzer and place a 2MHz crystal in series. I didn't concern
myself with impedance matching or any other details. Just a coax in and out.
It basically acts like a very sharp filter. What it does to phase noise, etc,
is beyond my ability to measure. I'll have to remember this trick.... It
might come in handy!
---------------------------------------
(Mr.) Taka Kamiya
KB4EMF / ex JF2DKG
On Thursday, March 26, 2020, 7:32:24 PM EDT, Perry Sandeen via time-nuts
<[email protected]> wrote:
Learned Gentlemen,
Both the HP 106 and 107 have a post oscillator crystal filter. There is also a
10 MHz crystal filter used in my Tracor 527E FDM.
So the question I have is there anything to be gained by adding 10 MHz crystal
filters to the 10811 and similar OCXO's? They are very inexpensive to purchase.
Regards,
Perrier
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