Where do I find the distribution amplifier? Bob
On Sat, Oct 31, 2015 at 12:19 PM, Mel Farrer via Elecraft < [email protected]> wrote: > I agree, and when you put the GPS referenced osc against my HP8920 and the > old HP 5346M on X-Y scope input, the circle hardly moves. > Mel, K6KBE > > From: Bob W7AVK <[email protected]> > To: 'Elecraft' <[email protected]> > Sent: Saturday, October 31, 2015 11:40 AM > Subject: Re: [Elecraft] 10 MHz Reference Oscillator > > For evaluation I purchased last spring directly from China one of the > BG7TBL 10 mhz sine output GPS Defined Oscillators when the price was > $125. These very nice units are now being sold from CA for a bit more > and comes with everything needed, Unit, GPS antenna, power supply. > > http://www.ebay.com/itm/10MHZ-Output-Sine-Wave-GPS-Disciplined-Clock-GPSDO-GPS-Antenna-Power-Supply-US-/261977676713?hash=item3cff161ba9:g:ZJQAAOSwrklVf3wV > > > It uses the Russian Morion Double oven crystal oscillators controlled by > voltage feedback against the GPS1 pulse per second signal using a very > long time constant control loop. If you would like a block drawing > contact me directly. > > I gave the unit to KE5FX, a member of the "Time Nuts" group, who has the > equipment to evaluate it. His results are posted at > http://www.ke5fx.com/gpscomp.htm It was found due to the pulse width > method of creating the Morion oscillator control voltage this unit was > operating 2 to 3 times ten to the minus 11 cycles low. I wouldn't get > too upset at this as that error would only be 3 hz off at 100 GHZ. > > Found the unit works great as a master reference for not only the K3 but > lab gear like counters and signal generators. > > 73 Bob W7AVK > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
