And (thanks to TVB) -- that's the answer. It's from the 5110A
synthesizer driver, circa 1965.
On 6/6/21 1:28 PM, Poul-Henning Kamp wrote:
--------
Magne Mæhre writes:
On 6/6/21 4:22 PM, John Ackermann N8UR wrote:
Looking through the junk box I came upon a metal box labeled:
Frequency Standard
05110-6014
Series 330
This eBay listing lists it as a 1 MHz HP frequency standard
HP 5110 was the driver HP's first "cash-register" synthesizer.
According to the HP5110A manual:
05110-6014 is "A2 Frequency Standard"
And:
05110-6081 is "A3 Crystal Filter"
https://bama.edebris.com/manuals/hp/5110a/
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