GPSDO for AirSpy

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Stephen Arbogast

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Sep 26, 2025, 12:41:07 AM (7 days ago) Sep 26
to Society of Amateur Radio Astronomers
Finally AirSpy.us   has  confirmed my  order  of a  cable that   I can use for syncing my AirSpy   SDR to GPS....   Don't know when  it will   arrive..    I  seem  to  remember  some one posting   a  comment  about  it  did  not  make much  difference.  Will   try it...      Not  sure  yet   how    I will  measure  the   phase  noise.............

Marcus D. Leech

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Sep 26, 2025, 12:42:37 AM (7 days ago) Sep 26
to sara...@googlegroups.com
On 2025-09-26 00:41, 'Stephen Arbogast' via Society of Amateur Radio
> -
For simple hydrogen observations, a GPSDO will make essentially NO
difference in sensitivity over the TCXO that is on-board the AirSpy.


Stephen Arbogast

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Sep 26, 2025, 12:54:17 AM (7 days ago) Sep 26
to Society of Amateur Radio Astronomers
Yes,    I am  still   thinking   phase coherent   stuff.

Stephen Arbogast

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Sep 27, 2025, 7:58:08 PM (5 days ago) Sep 27
to Society of Amateur Radio Astronomers
Running  my AirSpy R2   with  GPSDO    and yes no difference  but if  one has  their  SDR  outside  subject  to  temp variation....  this is  interesting .

Stephen Arbogast

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Sep 27, 2025, 8:00:15 PM (5 days ago) Sep 27
to Society of Amateur Radio Astronomers
wrong  link.....  hang on...

Stephen Arbogast

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Sep 27, 2025, 8:02:39 PM (5 days ago) Sep 27
to Society of Amateur Radio Astronomers
Try  this  one....    https://www.youtube.com/watch?v=C1KPqAUgab4
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