Re: [time-nuts] Lady Heather for Z3801A (and other devices)

Hi Mark, Will it work with Z3811 (KS24361) 73, Bill, WA2DVU Cape May ___ 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.

Re: [time-nuts] Adjusting nominal frequency of FTS 1200-100 OCXO?

Hi Best guess: It’s inside the styrofoam block. It’s inside a sealed can in the block It’s (maybe) inside a can inside that one. It’s a SMT part on a board in that can. You set the frequency by pulling what they have there, measuring it and putting in another cap. If they used a series like

Re: [time-nuts] time-nuts Digest, Vol 146, Issue 13

> > > Message: 2 > Date: Mon, 5 Sep 2016 19:48:14 -0700 > From: "Richard (Rick) Karlquist" > To: Discussion of precise time and frequency measurement > > Subject: [time-nuts] Hobbyist grade or homebrew temperature testing > chamber? >

[time-nuts] Adjusting nominal frequency of FTS 1200-100 OCXO?

Christopher, The only way is to open the oscillator up and reselect the capacitor they used to set it on frequency. I've done it once or twice long ago, not easy to do! I have a 1200 with the same problem however it does tune to 1Hz low so I use it as the offset oscillator for my DMTD unit!

Re: [time-nuts] Adjusting nominal frequency of FTS 1200-100 OCXO?

Christopher, my 4060 has been locking exactly 0.5 Hz off of the correct frequency. The 1000B has had a contact problem on the edge connector. Over the years, an insulating black layer had built up between the solder and the gold plating of the contacts. I had to re-solder each of them carefully

[time-nuts] Systron Donner 1702 1GHz Synthesiser

If anyone in UK is interested, I have one for sale. In good working condition. Asking £200 ono. Complete with manual.Prefer collection only.Thanks & regardsRob Sent from my Samsung Galaxy smartphone. ___ time-nuts mailing list -- time-nuts@febo.com To

Re: [time-nuts] Adjusting nominal frequency of FTS 1200-100 OCXO?

Dave, While this is a bit of a tangent out of normal time-nuts, it still has some relevance in terms handling of old equipment. Lets not get to crazy on this tangent. We had a similar issue many years ago. The BGA mounted chips would break away from the boards and rattle around after

Re: [time-nuts] Adjusting nominal frequency of FTS 1200-100 OCXO?

Hi As long as we are cataloging all this stuff: The run of the mill OCXO has a hermetic case on it. You get in and out of the case via pins with glass to metal seals. One of the common things to make the pins out of is Kovar. It’s great stuff, matches the TC of glass fine, easy to work with.

[time-nuts] Normal operating specs of a Morion MV89?

I recently ordered and received what claims to be a 2007 vintage Morion MV89 from ebay (I say claimed as that what the auction item said, but my unit is missing the identifying label on the top and just has '2007 MV89A' written on the side in marker). I've powered it up with a bench power supply

Re: [time-nuts] Normal operating specs of a Morion MV89?

Hi Compared to some MV89’s that’s a bit cold….It certainly is not alarmingly hot for an OCXO case. Bob > On Sep 19, 2016, at 5:31 PM, Tim Lister wrote: > > I recently ordered and received what claims to be a 2007 vintage > Morion MV89 from ebay (I say claimed as that

Re: [time-nuts] Adjusting nominal frequency of FTS 1200-100 OCXO?

Adrian, Your connector has probably experienced a problem common to gold plated contacts and component leads. Years ago, I worked in the avionics repair and calibration facility at the Navy base in Jacksonville, FL. I saw this quite frequently in HP and Tektronix instruments that had been in

Re: [time-nuts] Adjusting nominal frequency of FTS 1200-100 OCXO?

Thanks, Corby. That was my guess. Is this cap buried in the styrofoam block? (Cue "we need to go deeper" meme.) -christopher 73 de AI6KG On Mon, Sep 19, 2016 at 10:18 AM, wrote: > Christopher, > > The only way is to open the oscillator up and reselect the capacitor they

Re: [time-nuts] Adjusting nominal frequency of FTS 1200-100 OCXO?

Hi Adrian, Thank you for your reply. Is this board deep inside the OCXO? I haven't ventured past the output amplifier board stack at the "front." The styrofoam insulation seems pretty fragile from age and heat. -christopher 73 de AI6KG On Mon, Sep 19, 2016 at 12:28 PM, Adrian