[time-nuts] Inexpensive Alternative to a 5120A

Chris Albertson albertson.chris at gmail.com
Sun Oct 9 18:18:52 EDT 2016


Likely the lowest cost way to get into that is with a TV tuner USB
dongle. They cost about $20.   People are able to get about 2.4 mega
samples per second.  Not a lot of dynamic range but you can control
that.    Use a mixer to move the signal  of interest into the range
the tuner can handle.   Tuniers typically tune from about 20Mhz to
1Ghz or 2Ghz approximate.


On Sun, Oct 9, 2016 at 12:05 AM, Paul Boven <p.boven at xs4all.nl> wrote:
> Hi Randal,
>
> On 2016-10-07 18:52:57, Cube Central wrote:
>>
>> Is there an alternative that someone could point me to that would cost
>> only a couple hundred rather than (what I expect) is a couple thousand?  How
>> would I go about gathering the data needed for these nifty ADEV graphs I see
>> floating about in here?
>
>
> People have reported (also on this list) that some SDR (software defined
> radio) hardware is quite capable of emulating a 5120/5125, and even going
> beyond it in performance.
>
> "Oscillator metrology with software defined radio, Sherman, J.A., J├Ârdens,
> R." - arXiv:1605.03505 [physics.ins-det]
> https://arxiv.org/abs/1605.03505
>
> Regards, Paul Boven.
>
>
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-- 

Chris Albertson
Redondo Beach, California


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