Signal Corps. Frequency Meter BC 221 AF.. Very poor condition, paint flaked off on interior and exterior , make a good project . Sold as spares/repairs or display purposes.
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Untested but the frequency dial works freely & looks in good condtion.
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eBay
Made by the Bendix Aviation Corp in Baltimore. I haven't cleaned it, so included in the price are a few bits of cobweb, dust and other detritus. Keep it in the cling film inner wrapper I put it in and place it in a cooler room in your house, with several heavy books on top to keep it flat.
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US Military Frequency Meter US Army BC-221-M Signal Corps Bendix Radio UNTESTED. Untested so listed as spares/repairs, ebay only gives the option to list as new or used. No idea how it works or how to work it.
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Second World War United States Army Air Force B-17 Bomber Signal Corps Frequency Meter BC-221-AH. Poor condition Dial to front of set missing and no back panel. Untested Collection available. Any questions please ask Please view my other items
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eBay