[time-nuts] Old Frequency Electronics standard and synthesizer
brooke at pacific.net
Sun Sep 11 20:38:05 UTC 2011
How about just changing the input voltage and comparing to the meter
reading, i.e. are they 1:1?
If there's a power supply then watch it's output voltage as the input is
brought up and at some point the output voltage will stabilize.
How about some photos?
John Ackermann N8UR wrote:
> Years ago I found an interesting box at a hamfest. It's from
> Frequency Electronics and is labeled as a model FE-6018A Precision
> Frequency Synthesizer.
> It has an FE-10A 5 MHz frequency standard, and several internal
> filter/mixer/other stuff modules. In addition to a 5 MHz output, it
> has the following: 5 kHz square wave, 5 kHz sine wave, 50 MHz, 100
> MHz and 100.05 MHz. (Except that the panel is labeled "KC" and "MC";
> a date stamp indicates that this unit might have been built in 1969.)
> At the time I didn't find any documentation for it, and a Google
> search today didn't turn up much either (even the FE-10A seems
> undocumented, though I'm sure I've seen others). I wonder if anyone
> here has heard of this beast or knows what it was used for?
> Also, its power input is a DC connector that's similar to, but I don't
> think matches, the DC connector HP uses on the 5061 etc. The unit
> came with a clearly after-market 18V power supply with the proper
> connector. I've never been sure, though, whether 18V is the correct
> operating voltage.
> The only clue on the exterior of the box is that the label showing
> proper readings for the meter on the FE-10A module indicates that 17
> volts is proper -- but I don't know if that's being monitored at the
> back panel or at some other point. With the 18V supply hooked up, the
> meter is reading in the lower part of the orange "normal" range.
> Does 18V seem like a sane supply voltage for a piece of gear like
> this, or is it more likely to be 24 volts?
> Thanks for any info; I have the thing warming up now (on its 18V
> supply) and hope to get some idea of how well it works; I had it
> running 20 years ago but probably not since then.
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