[time-nuts] Milliren 240 OCXOs

[Greg Broburg]

Hello group;

update on the Milliren 240 OCXOs that I have.

Quan = 4

version -0545 Frequency = 10M000000 Hz

No reference Voltage output, no EFC in connection.

These are tuned by a trim pot accessible through a
threaded hole in the side. Remove screw to access
trim.

They would be great for a portable frequency counter
upgrade from usual OCXO or worse.

Sorry that they cannot be EFCd.

I also have one Milliren 250 5M000000 Hz same
as 240s no EFC on this one either.

Later style HP 53131 53181 do closed box ref osc
cal and require EFC to work.

Greg