Hi Brooke,
It looks like I've asked a question poorly, yet again. So, let me try again.
I have this idea of combining a DMTD with an SDR. So, said that way, it looks
like what I really need is a 2-channel audio SDR. And having said that, maybe
what I'm looking for is an external USB sound card. Those I can find. I can
probably even figure out how to convert them to DC and supply them with a
disciplined oscillator, if needed.
Bob
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From: Brooke Clarke <[email protected]>
To: Discussion of precise time and frequency measurement <[email protected]>
Sent: Thursday, August 11, 2016 1:36 PM
Subject: Re: [time-nuts] Low cost SDR suitable for phase noise measurement?
Hi Bob:
The SDR-IQ has a lower frequency limit of 500 Hz.
http://www.prc68.com/I/Bats.shtml#SDRIQ
There is a mod that replaces the on board 66 MHz oscillator with one locked to
10 MHz.
--
Have Fun,
Brooke Clarke, N6GCE
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
The lesser of evils is still evil.
-------- Original Message --------
> A number of posts have appeared about Zynq SDRs on the "Shera revisited"
> thread. So, I'd like to ask the more general question: Are there any low
> cost SDRs that are suitable for measuring phase noise when coupled with a
> DMTD? I believe what I'm looking for is something with enough bits to work
> in the audio range down to DC. Yes, I could use a modified sound card, but
> I'm really looking for something not sound card related. My thought was to
> use a DMTD with a heterodyne frequency of maybe 5KHz.
>
> Bob -----------------------------------------------------------------
> AE6RV.com
>
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