[Boatanchors] FS:XCU-303 Deluxe Crystal Calibrator Unit for National NC-303

[Charlie Hugg]

FS:XCU-303 Deluxe Crystal Calibrator Unit is designed expressly for use with
your NC-303 receiver. In addition to providing crystal controlled marker
frequencies every 100 kilocycles over the entire tuning range of your
NC-303, the Deluxe Calibrator provides for direct calibration of the 100th
harmonic of the 100-kilocycle frequency against WWV (10 mc). The calibrator
consists of an electron-coupled 100-kilocycle crystal oscillator, and a
10-megacycle mixer. The mixer converts the beat between WWV and the 100th
harmonic of the oscillator to 7.07 megacycles. The frequency is marked in
red on the 40 meter dial scale of your NC-303. Nice shape, pictures
available. Removed from a working NC-303. Price is $65 plus shipping.
Thanks, Charlie Hugg, K5MBX