{"product_id":"wwii-u-s-navy-type-ckb-74028-heterodyne-frequency-meter-w-calibration-book","title":"WWII U.S. Navy Type CKB-74028 Heterodyne Frequency Meter w\/ Calibration Book","description":"\u003cp\u003e\u003cspan\u003eWWII U.S. Navy Type CKB-74028 Heterodyne Frequency Meter w\/ Calibration Book\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eOriginal WWII-era U.S. Navy Bureau of Ships Type CKB-74028 Heterodyne Frequency Meter manufactured by Mission Bell Radio Mfg. Co., Los Angeles, California.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAn 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:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e“TYPE CKB-74028”\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e“Heterodyne Frequency Meter”\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFrequency Range: 125 to 20000 KC\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNavy Department Bureau of Ships\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFront panel features:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eLarge precision dial assembly\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFrequency band selector\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCorrector adjustment\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRF coupling controls\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCrystal checkpoint\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePhones jack\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eModulation controls\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMost 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.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCondition is very good original surplus with attractive honest wear, strong markings, and excellent display appeal. Untested.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThese 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.\u003c\/span\u003e\u003c\/p\u003e","brand":"Whiskey Rebellion Antiques","offers":[{"title":"Default Title","offer_id":43046405636173,"sku":null,"price":425.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0610\/9229\/8829\/files\/87734373-0F0F-4E49-8DB4-F656B6A6E16F.jpg?v=1779925468","url":"https:\/\/whiskeyrebellionantiques.com\/products\/wwii-u-s-navy-type-ckb-74028-heterodyne-frequency-meter-w-calibration-book","provider":"Whiskey Rebellion Antiques","version":"1.0","type":"link"}