RE: [time-nuts] Xtal Oscillator Aging

2005-10-26 Thread Richard \(Rick\) Karlquist \(N6RK\)
It has nothing to do with throwing off atoms. A Xtal is actually a This only happens in very low quality crystals that have impurities on the surface. Going in the other direction, the mechanical resonant frequency changes with time because, as the xtal vibrates, microscopic cracks

[time-nuts] connection info for HP hockey puck oscillator E1938-60207

2005-10-26 Thread Stan Searing
Hello, I have a couple of these interesting shaped oscillators and was wondering if anyone has a manual, specs, or even just the pinout of the 25 pin D connector. I'd like to fire one up and see how it does. I'm new to this list. By way of introduction, I'm inexplicably interested in old HP

RE: [time-nuts] Xtal Oscillator Aging

2005-10-26 Thread jim_johnson
Hi, I posed this question to Jack Kusters, now retired from HP/Agilent. He and Charles Adams commercialized the SC-cut crystal for HP in the 10811A oscillator. He gave me permission to post his response on the reflector. Jim Johnson [EMAIL PROTECTED]

Re: [time-nuts] connection info for HP hockey puck oscillatorE1938-60207

2005-10-26 Thread Tom Van Baak
Hi Stan, Welcome (at last!). See if the DB25 hockey puck oscillator looks like this: http://www.leapsecond.com/museum/e1938a/ I have a Tracor 527A manual you can borrow - unless some else on the list has already scanned it (?). /tvb http://www.leapsecond.com/time-nuts.htm