[time-nuts] Re: Help ID'ing Frequency Standard (John Ackermann N8UR)

[vilgotch1 at gmail.com]

This is indeed the frequency standard from the 5110A synthesizer driver. A few years ago I scanned and posted the manual for it on BAMA from where you can download it. I first encountered this marvelous instrument when I was an EE student in the late 1960's and was absolutely blown away by it. I wrote my final year thesis in 1970 on frequency synthesizers and the direct synthesis technology in the 5100A figured prominently. Compared to the other RF signal generators if the day it was way ahead!

Years later I am lucky enough to have a 5100A/5110A combo here and it works beautifully. I had to replace an immolated  SRD with a varactor as described in the prc68 web page which is a story in itself, and it hasn't missed a beat since. The synthesizer has provision for computer control of the push button functions so the frequency can be switched very rapidly by software. I have the connectors and suitable cable but have never got around to building a suitable interface. More modern equipment superseded it but I'm very pleased to have one still working.

73, Morris Odell VK3DOC
Locked down in Melbourne, Australia