• Paese
• USA (Stati Uniti d'America)

• Produttore / Marca
• MILITARY U.S. (different makers for same model)

• Anno
• 1941–1945

• Categoria
• Strumento da laboratorio

• Radiomuseum.org ID
• 71778

Clicca sulla miniatura dello schema per richiederlo come documento gratuito.

• Numero di tubi
• 3

• Valvole
• VT-167 VT-116 VT-116

• Gamme d'onda
• Gamme d'onda nelle note.

• Tensioni di funzionamento
• Batterie a secco / 135/6 Volt

• Altoparlante
• - solo per cuffie o auricolari

• Materiali
• Vari materiali

• Radiomuseum.org
• Modello: SCR-211-BC-221- - MILITARY U.S. different makers

• Forma
• Apparecchio portatile > 20 cm (senza la necessità di una rete)

• Dimensioni (LxAxP)
• 10.5 x 15 x 9.75 inch / 267 x 381 x 248 mm

• Annotazioni
• Precision heterodyne frequency meter designed to measure or radiate radio-frequency impulses between 125 kHz and 20 MHz. Portable, self-contained, used mainly to calibrate field radio receivers and transmitters by direct comparison with the crystal-calibrated variable frequency oscillator of the instrument. Frequency readings provided by a calibration book. In 1941-1945, there were 25 different BC-221 models produced with suffix letters A, B, C, D, E, F, J, K, L, M, N, O, P, Q, R, T, AA, AC, AE, AF, AG, AH, AJ, AK and AL. Each model letter denoted a different military order and(or) different manufacturer - Allen D. Cardwell, Bendix Radio, Philco, Rauland or Zenith Radio. All of the BC-221 models were similar as far as basic operation was concerned, but there were many differences in the mechanical arrangement of the cabinets and controls as well as in electrical circuit design. Supplied with wooden or aluminum-alloy metal cabinet. Required P-18, P-20 or HS-30 headset. Sample Dimensions, Valves and Weight are given for model BC-221-AK of Philco in a wooden cabinet. Please refer to the individual BC-221 model pages to add your images and to post forum entries and questions.

• Peso netto
• 36 lb (36 lb 0 oz) / 16.344 kg

• Bibliografia
• -- Original-techn. papers. (- - -)

• Letteratura / Schemi (1)
• TM 11-300 (20 July 1944)

• Autore
• Modello inviato da un iscritto da D. Utilizzare "Proponi modifica" per inviare ulteriori dati.

• Altri modelli

• In questo link sono elencati 398 modelli, di cui 350 con immagini e 210 con schemi.
  Elenco delle radio e altri apparecchi della MILITARY U.S. (different makers for same model)