Frequency Meter TS-323/UR

Hoffman Radio Corp. U.S.A. -  1942.

The TS-323/UR is a crystal controlled heterodyne frequency meter, frequency range from 20 to 450 MHz . It is the VHF/UHF version of the more well-known BC-221. The circuit use 5 tubes: 9002, 6C4, 9001, and n.2 6AK5. In the case upper connector can be inserted a telescopic rod antenna. An headphone is used to listen the beat note between the unknown  frequency and the local oscillator. Battery power supply: 6 V (2 x BA-203/U in parallel) and 135 V (3 x BA-59 in series). An AC stabilized power supply can be fitted in the back batteries space. Under the front door there is another space closed by a plate and 6 screws, with inside the spare tubes. - U.S.A. 1942.
Il TS-232/UR e' un frequenzimetro a eterodina controllato a quarzo, frequenza operativa da 20 a 450 MHz. E' la versione VHF/UHF del piu' conosciuto BC-221. Il circuito utilizza 5 valvole: 9002, 6C4, 9001, e n.2 6AK5. Nel connettore sulla parte superiore del cabinet puo' essere inserita un'antenna telescopica. Viene utilizzata una cuffia per ascoltare il battimento tra la frequenza incognita e l'oscillatore locale. Alimentazione a batterie: 6 V (2 x BA-203/U in parallelo) e 140 V (3 x BA-59 in serie). All'interno del vano batterie e' possibile inserire un alimentatore da rete stabilizzato. Sotto allo sportello frontale c'e' un altro vano chiuso da una piastra con 6 viti, dentro il quale ci sono le valvole di scorta. - U.S.A. 1942.
TS-323 carrying case - Click to enlarge Click to enlarge Click to enlarge
Click to enlarge TS-323 serial number - Click to enlarge Click to enlarge
TS-323 calibration book - Click to enlarge TS-323 calibration book - Click to enlarge TS-323 frequency accuracy - Click to enlarge
Click to enlarge Main tuning variable condenser - Click to enlarge Click to enlarge
Click to enlarge Click to enlarge the TS-323 circuit diagram 1 MHz Crystal holder - Click to enlarge
chassis bottom view - Click to enlarge chassis bottom view - Click to enlarge chassis bottom view - Click to enlarge
Power supply - Click to enlarge Click to enlarge the TS-323 ac power supply diagram Power supply - Click to enlarge
Click to enlarge spare part space TS-323 main tuning knobs - Click to enlarge Click to enlarge spare part space
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