John, The radio is on 2M.
Joe Gray W5JG On Sun, Nov 4, 2012 at 5:23 AM, John Ackermann N8UR <[email protected]> wrote: > Joe, the question is whether the DDS spurs and noise on the FE-5680A are > strong enough to interfere with your measurements. I suspect that in the > HF/VHF range, you'd probably be OK, at UHF maybe dicey, at microwave > probably not good (assuming you're multiplying the Rb up). > > I have phase noise measurements of the "narrow DDS" version of the > FE-5680A along with some other low-cost Rbs at > http://febo.com/pages/oscillators/rubes/ > > 73, > John > > On Oct 30, 2012, at 8:28 PM, Joseph Gray <[email protected]> wrote: > > > I know that some here are Amateurs and have used external sources to > > provide a more accurate reference for a receiver. So, I have a noob > > question or two. > > > > Is the programmable FE-5680A suitable to replace the 12.8 MHz > > reference in a Midland XTR? If so, where do I feed the rubidium into > > the circuit (see attached screen clip)? X101 is the 12.8 MHz crystal > > and R107 is used for temperature compensation. > > > > What I have in mind is to use the XTR radio for measuring off-the-air > > carrier frequency error. It's just part of a project that I've been > > thinking of doing. Things are still in the planning and experimenting > > stage. > > > > Joe Gray > > W5JG > > <ScreenClip.png> > > _______________________________________________ > > time-nuts mailing list -- [email protected] > > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
