Re: [time-nuts] Low cost SDR suitable for phase noise measurement?

2016-08-12 Thread Wes
Where can I find this mod? On 8/11/2016 11:36 AM, Brooke Clarke wrote: 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.

Re: [time-nuts] Low cost SDR suitable for phase noise measurement?

2016-08-12 Thread Chris Albertson
> To: Discussion of precise time and frequency measurement <time-nuts@febo.com> > Sent: Thursday, August 11, 2016 9:41 PM > Subject: Re: [time-nuts] Low cost SDR suitable for phase noise measurement? > > Hi > > In a DMTD (or in the equally useful single mixer setup) the ad

Re: [time-nuts] Low cost SDR suitable for phase noise measurement?

2016-08-12 Thread Bob Camp
groups.yahoo.com/neo/groups/GFS-GPSDOs/info > > From: Bob Camp <kb...@n1k.org> > To: Discussion of precise time and frequency measurement <time-nuts@febo.com> > Sent: Thursday, August 11, 2016 9:41 PM > Subject: Re: [time-nuts] Low cost SDR suitable for phase no

Re: [time-nuts] Low cost SDR suitable for phase noise measurement?

2016-08-12 Thread Bob Stewart
y, August 11, 2016 9:41 PM Subject: Re: [time-nuts] Low cost SDR suitable for phase noise measurement? Hi In a DMTD (or in the equally useful single mixer setup) the advantage for frequency measurement comes from the downconversion process. The further you downconvert (10 Hz vs 100 Hz) the

Re: [time-nuts] Low cost SDR suitable for phase noise measurement?

2016-08-11 Thread Bob Stewart
att...@kinali.ch> To: Bob Stewart <b...@evoria.net>; Discussion of precise time and frequency measurement <time-nuts@febo.com> Sent: Thursday, August 11, 2016 5:12 PM Subject: Re: [time-nuts] Low cost SDR suitable for phase noise measurement? On Thu, 11 Aug 2016 19:29:08 + (U

Re: [time-nuts] Low cost SDR suitable for phase noise measurement?

2016-08-11 Thread Bob Camp
/groups/GFS-GPSDOs/info > > From: Bob Camp <kb...@n1k.org> > To: Discussion of precise time and frequency measurement <time-nuts@febo.com> > Sent: Thursday, August 11, 2016 3:13 PM > Subject: Re: [time-nuts] Low cost SDR suitable for phase noise measurement? > >

Re: [time-nuts] Low cost SDR suitable for phase noise measurement?

2016-08-11 Thread Bob Stewart
e time and frequency measurement <time-nuts@febo.com> Sent: Thursday, August 11, 2016 3:13 PM Subject: Re: [time-nuts] Low cost SDR suitable for phase noise measurement? Hi Just to clarify: You are looking for a way to digitize the output(s) of the mixer(s) in a DMTD. The “t

Re: [time-nuts] Low cost SDR suitable for phase noise measurement?

2016-08-11 Thread Attila Kinali
On Thu, 11 Aug 2016 19:29:08 + (UTC) Bob Stewart wrote: > 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

Re: [time-nuts] Low cost SDR suitable for phase noise measurement?

2016-08-11 Thread Bob Camp
m > > GFS GPSDO list: > groups.yahoo.com/neo/groups/GFS-GPSDOs/info > > From: Brooke Clarke <bro...@pacific.net> > To: Discussion of precise time and frequency measurement <time-nuts@febo.com> > Sent: Thursday, August 11, 2016 1:36 PM > Subject: Re: [time-nuts

Re: [time-nuts] Low cost SDR suitable for phase noise measurement?

2016-08-11 Thread Bob Stewart
: Brooke Clarke <bro...@pacific.net> To: Discussion of precise time and frequency measurement <time-nuts@febo.com> 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

Re: [time-nuts] Low cost SDR suitable for phase noise measurement?

2016-08-11 Thread Brooke Clarke
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

[time-nuts] Low cost SDR suitable for phase noise measurement?

2016-08-11 Thread Bob Stewart
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