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Month: September 2015

3 Vintage Sulzers Compared

September 27, 2015 n8ur Leave a comment

I did two hour measurement runs of three ’60s vintage Sulzer frequency standards against perhaps the best modern quartz standard…

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Posted in: Time and Frequency

TASS Switching System announced, and fun with enclosures

n8ur Leave a comment

Today TAPR announced availability of a project I’ve been working on for a while, a computer-controlled switch system called the…

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Posted in: Ham Radio, TAPR Projects, Test and Lab Equipment, Time and Frequency

Testing a ’60s vintage Sulzer OCXO — with a twist

September 19, 2015 n8ur Leave a comment

Over the years I’ve acquired a whole bunch of Sulzer OCXOs.  One is dead, several have oven temperature control problems,…

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Posted in: Time and Frequency

More OCXO Adjustments

September 6, 2015 n8ur Leave a comment

More twiddling of the OCXOs this afternoon. Austron 1250A:  was tune 375, +3.9e9; now tune 340, +4.5e12 FTS 1050A: was…

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Posted in: Time and Frequency

Some Frequency Trimming

n8ur Leave a comment

I normally don’t adjust the frequency of the half dozen high quality quartz oscillators I have running in the lab. …

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Posted in: Time and Frequency

John’s New Geekblog

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I’ve intermittently had a blog running at febo.com for years now.  I used it mainly as a logbook of experiments,…

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Posted in: General

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