military: CKB-74028; Heterodyne Frequency Meter
ID: 219237
This article refers to the model: Heterodyne Frequency Meter CKB-74028 (MILITARY U.S. (different makers for same model))
military: CKB-74028; Heterodyne Frequency Meter
26.Apr.10 14:24
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The 74028 heterodyne frequency meter is the main part of the model LM-(*) crystal calibrated frequency indicating equipment, in the models LM-10 and higher, for use in the Naval radio service.
The 3 letter code is a manufacturer identification: CRR=Bendix Radio, CKB= Mission Bell Radio, and CBLC=Loral Electronics. There might be more manufacturers.
The LM-1 to LM-9 equipment used a similair frequency meter with a low range oscillator from 195-400 Khz.
Jan Terranea.
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