Re: [time-nuts] Some results on a very interesting Sulzer OCXO

I had a 5 MHz Sulzer in my lab for 20+ years, later adding a 2.5 MHz version. Living in Denver made tracking WWVB very easy with three different comparators over the years. I never managed to run them without a power interruption for anything close to 4 years. I also obtained two with an

[time-nuts] FE-5680A software calibration units ?

I’ve designed and built a small power/interface board for my FE-5680A. It takes DC power from a surplus laptop power supply (16-24 VDC) and uses a buck converter to drop that down to 15v and a 5v LDO to supply the 5v pin. It brings the serial and PPS out to a 4 pin SIP header and the 10 MHz to

[time-nuts] Some results on a very interesting Sulzer OCXO

I just did some measurements on a Sulzer 5 MHz OCXO that dates from the early '60s. Not only is the performance quite amazing, but there's a surprise: it's not on the frequency you'd expect, and it may have some historical interest. Details at http://blog.febo.com/wp/?p=17 (I'm playing with

Re: [time-nuts] Some results on a very interesting Sulzer OCXO

Hi Very interesting. Given the way those OCXO’s were made, one can only wonder at what the original cost on an “odd” frequency must have been….I doubt it shipped very quickly. Bob > On Sep 19, 2015, at 4:47 PM, John Ackermann N8UR wrote: > > I just did some measurements on a

Re: [time-nuts] Some results on a very interesting Sulzer OCXO

I recently scored some old Austron 5MHz oscillators at a military surplus store. They were listed at $10 each. (The price may have gone lower after I BSed with the owner for a while) One is a Sulzer model 1120N from 1972. The other is a Sulzer model 1150C from 1971. That 5 MHz oscillator has

[time-nuts] The Pendulum Paradigm by Martin Beech, 2014

Hi: I just started reading the subject book where the mathematics of the pendulum are used as a unifying idea to tour physics. Included is a correct illustration on page 205 of Foucault's gyroscope demonstration that the earth turns 360 degrees in a sidereal day. Maybe there will be a