[hpsdr] Excalibur as an instrument in measuring SSB Phase Noise

[Graham / KE9H]

Ron:

The crystal oscillator you reference will not fit the footprint on the 
Excalibur,
so you would have to "blue wire" it in.  If that is OK, then it would work
electrically.

Output L and C values would have to change from current 11 MHz low pass
to 17 MHz Low pass values, but not a big thing to do. See Wenzel app note
for how to calculate values.

I note that Crystek has a 16 MHz version on the spec sheet, of the 
oscillator I used,
that would be a drop-in, but it is not stocked at Mouser or Digikey.

Perhaps you can get a sample from Crystek directly.

See John A's page for his measured performance of the Excalibur phase noise.

--- Graham / KE9H

==

Ronald Cox wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Graham,
> I am looking for an inexpensive low phase noise oscillator for use in 
> measuring receiver phase noise. Thinking about purchasing a 16 MHz 
> crystek crystal (see: 
> http://www.crystekcrystals.com/crystal/spec-sheets/tcxo/CXOH7.pdf) and 
> putting it on an Excalibur board to test phase noise. 10 MHz is not 
> working well for me due to the strong internal Mercury 10MHz signal. 8 
> dBm out at 16 MHz would be just great.
> Would this be a good solution?
>
> Ron, W9KFB
> Indianapolis
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