WWII U.S. Navy Type CKB-74028 Heterodyne Frequency Meter w/ Calibration Book

WWII U.S. Navy Type CKB-74028 Heterodyne Frequency Meter w/ Calibration Book

Original WWII-era U.S. Navy Bureau of Ships Type CKB-74028 Heterodyne Frequency Meter manufactured by Mission Bell Radio Mfg. Co., Los Angeles, California.

An extremely desirable and visually impressive piece of WWII naval radio test equipment, this unit was designed for precision calibration and frequency checking of military communications equipment. The original Navy data plate remains intact and reads:

• “TYPE CKB-74028”
• “Heterodyne Frequency Meter”
• Frequency Range: 125 to 20000 KC
• Navy Department Bureau of Ships

Front panel features:

• Large precision dial assembly
• Frequency band selector
• Corrector adjustment
• RF coupling controls
• Crystal checkpoint
• Phones jack
• Modulation controls

Most notably, this example retains its original spiral-bound calibration/instruction manual with indexed dial settings and operating instructions — a major bonus rarely found with these units.

Condition is very good original surplus with attractive honest wear, strong markings, and excellent display appeal. Untested.

These Navy frequency meters were critical pieces of wartime communications servicing equipment and are sought after by advanced radio, naval electronics, Signal Corps, and WWII technology collectors.