I've obtained a Hallicrafters SX-122A receiver which has a Johnson 100kHz crystal calibrator installed instead of the optional Hallicrafters HA-19 crystal calibrator which was specified by Hallicrafters for that radio.? Before proceeding to use the Johnson calibrator, I'd like to compare its schematic with that of the Hallicrafters calibrator.? Does anyone have the schematic for the Johnson calibrator ?
Thanks & 73,
Bill
KJ5BNE
