Chip, You can find some used units on sale here http://www.ebay.com/sch/i.html?_trksid=p5197.m570.l1313&_nkw=trimble+thunderbolt&_sacat=0&_from=R40 but they're pricey. I bid $50 for this one here, and won the auction. That was about 15 months ago. I'm not really ready to live without it though.
I'd look for a newer one, with an integrated power supply and a passive splitter. The K3 here is connected full-time and the Tbolt is running 24/7, powered as the rest of the station from solar power and an Optima D type battery. The basic unit shown on the eBay site requires +/-12VDC and +5VDC. I had to build a 3-output 12V input power supply from commercial DC-DC (Murata) converters, in order to use the Trimble. Most lab test equipment has a 10 MHz input for a reference frequency. With a splitter, you could run your K3 on the ref full-time, and still have an output for your test equipment at the bench. It's pretty handy to have a 50 ppt freq ref around, at least if you're serious about measurement accuracy. You'll want a good roof-mount antenna. The Lady Heather Disciplined Oscillator program is good for monitoring, and there is Trimble software at their support site for set up and control. Maybe someone on the list wants to sell a unit? Persevere! 73, matt W6NIA K3 #24 == On Tue, 23 Oct 2012 06:07:17 -0500, you wrote: >I would like to fine tune my KX3 for maximum frequency stability, and also >calibrate my frequency counter (and get some idea of its warm-up drift). > >So, anyone willing to lend out a Trimble Thunderbolt or similar GPSDO? I >would even buy one if someone was ready to let one go. > >Thanks and 73, >Chip >AE5KA >______________________________________________________________ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Elecraft@mailman.qth.net > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
