John Miles wrote:

In article ,
says...

Hi

need a low-noise xtal oscillator using 14.7 or 15.7MHz rubber xtals in
series mode circuit to sweep xtal filters with good as possible noise
distance. The available xtals are believed to pull +/-10kHz or more.

Any suggestions.


Use a DDS hooked up to your PC's parallel port?

-- jm

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http://www.qsl.net/ke5fx
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A DDS isn't going to have good enough phase noise. The OP is correct in
using a pullable crystal oscillator.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com