My last one was eBay as well. Thomas Knox
> Date: Wed, 3 Apr 2013 23:15:06 -0400 > From: bobda...@triad.rr.com > To: time-nuts@febo.com > Subject: Re: [time-nuts] Question about FTS 1050A > > Dick, > > If you're asking about the FTS 1050A it was on Ebay. I believe > Symmetricom still sells them but I can't justify buying one from them. > > bob > > On 4/3/2013 10:56 PM, Richard Solomon wrote: > > Just curious, where are you getting these from ? > > > > Tnx, Dick, W1KSZ > > > > > > On 4/3/2013 7:21 PM, Robert Darby wrote: > >> A little follow-up. > >> > >> I looked at all four 1000B outputs with the scope; one pair is at > >> 1.2V rms and the second is at .7V rms. The waveform looks clean and > >> is close to the 1.0V and .5V described on the spec sheet so I > >> conclude that the oscillator is fine. > >> > >> I disassembled the doubler case to check the voltage there and found > >> that the voltage regulator is working correctly. There are two > >> identical boards inside. The oscillator feeds a Mini-Circuits AK-2(+) > >> frequency multiplier directly and each doubled output is fed into two > >> identical circuits each with with 4 2n2222's, two diodes, assorted > >> resistors and caps thence out through a Mini-Circuits wideband > >> transformer TMO4-6. With the boards on the bench I jury rigged an > >> oscillator to drive the input and I get the same low output, albeit > >> rather cleaner. I'm going to order some connectors so I can be > >> certain about the signal path and check the doublers again. > >> > >> I wonder if someone needed four low level 10MHz outputs and > >> ordered/modified the amplifiers to suit. I'm not sure they're > >> working perfectly but I suspect most of the noise I'm seeing is due > >> to my hook-up to the tnc connectors. I'll know more once I get some > >> connectors and meanwhile I'll attempt to draw a schematic of the > >> circuit. > >> > >> Thanks for everyone's comments; more later. > >> > >> Bob Darby > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.