Quick? How much do you want to pay? $1500 perhaps. On Wed, Apr 6, 2011 at 3:47 PM, Joseph Gray <[email protected]> wrote:
> Murray, > > Do you have any details on the DDS? How difficult is it to change on > the fly if I wanted to? > > Is the FE-5680A that you like +15V only? > > Joe Gray > W5JG > > > On Wed, Apr 6, 2011 at 12:34 PM, Murray Greenman > <[email protected]> wrote: > > Joe, > > I have several of the FEI units. You pay more for these, because > > (assuming you get the right one) they have a DDS synthesizer included, > > which (with suitable modification) allows them to operate from about > > 1kHz to 15MHz in 10mHz steps. Some models require +15V and +5V, others > > just +15V. My preferred unit is the FE-5680A. I have mine mounted on a > > large aluminium plate and powered by a switch-mode computer supply. I > > have set the default frequency to 10MHz. > > > > The LPRO type are fine if you want a simple fixed 10MHz reference, and > > are in general cheaper and use less power. > > > > As for lifetime, they seem to go forever. That said, there's no need to > > power them continuously since (in my experience) they are close to their > > final frequency 5 minutes from a cold start. Power consumption is higher > > than an OCXO, but they really do make a great portable standard. That's > > what I'd use (in fact, that's what I do use). > > > > Murray > > > > > > _______________________________________________ > > 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.
