On Mon, 20 Jan 2020 14:44:01 -0500 Bob kb8tq <[email protected]> wrote: > > On Jan 20, 2020, at 2:38 PM, jimlux <[email protected]> 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).
No, these are from Ebay. A guy in Texas has been salvaging them from (I assume) telecom equipment: https://www.ebay.com/itm/CTS-16-384MHz-OCXO-3-3V-Oven-Controlled-VFControl-50ppb-120mW-VFOV405-TCEDH/113877523761?hash=item1a83a11d31:g:3JQAAOSwxN5WXv4q Obviously all of the caveats about used OCXOs apply, but at least they weren't melted off of scrap PCBs by kids in China. This is a hobby project so I don't plan to build more than half a dozen of my design-in-progress. Assuming it happens at all ;) Regards, Mark _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
