ha scritto nel messaggio oups.com...
Hello, i am looking for a schematic for a 100kHz crystal calibrator,
nothing fancy.
Thanks
Paul

Should you instead want to buy a brand new one, still sealed, look at E-bay item 5823786147. It is a spare part of the Yaesu FR-DX400 receiver (1967)

Presently at about 30$

73

Tony, I0JX