Hi
> On Jan 20, 2020, at 3:12 PM, jimlux <jim...@earthlink.net> wrote: > > On 1/20/20 11:44 AM, Bob kb8tq wrote: >> Hi >>> On Jan 20, 2020, at 2:38 PM, jimlux <jim...@earthlink.net> wrote: >>> >>> On 1/20/20 10:01 AM, Mark Haun wrote: >>> >>>> A fair question... in fact I was initially planning to use the ABLNO + >>>> a PLL. The OCXOs I found, however, are CTS VFOV405's with phase noise >>>> claimed to be just as good as the ABLNO or CVHD VCXOs: >>>> https://www.ctscorp.com/wp-content/uploads/VFOV405.pdf >>>> They are reasonably low power, small[-ish], and have adequate stability >>>> for my needs. You can see why it is tempting to make the multiplier >>>> scheme work, as it should save on both power and board area. (The >>>> target application is a battery-powered SDR.) So far there don't seem >>>> to be any show-stopper issues with the plan, except that I am going to >>>> have to put together a phase-noise measurement system, or find a friend >>>> with one. >>> >>> Have you checked delivery times? - Just because it's listed in the catalog >>> does not mean you can get it in the next few weeks or months. If the online >>> sources (Digikey, mouser, Newark, etc.) have them in stock, then you're >>> good to go, but otherwise you could be looking at 6 months or more. >> …. and maybe nasty stuff like minimum order quantities in the range of 10 or >> 20 pieces ( or prices below that which work out to the same thing). > > > Been there, done that. I have a few extra 100 MHz tiny Vectron EX-421 OCXOs > at work because I had to order more than the 3 I needed. I need to find a > project at work to use them. Hmmm … wonder who talked you into that silliness …. :) :) :) Bob > > These are 100MHz units, ran about $262 each (in qty 6) (I'm going to guess > that Vectron has a minimum order of $1500 or something like that) > > The PN performance is better than either of the other two, but it's also not > a VCXO. It's probably "representative" of the performance that's achievable > in a small package at low power, though. > > FWIW, they seem to work fine in space, although they're not space qualified - > over 6 months or so, I didn't see any particular changes in frequency > compared to GPS or a CSAC that wouldn't just be aging. > > > <PNoise_EX-421-100MHz.pdf><ADEV_EX-421-100MHz.pdf>_______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
