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+++ 1947.a. RCA MI-12875 - first domestic cartridge recorder

RCA  MI-12875 - primul casetofon cu fir de otel.JPG +++  ca. 1944.a.c.  Cosmos Industries MX-303A/ANQ-1 - wire cartThumbnails+++  1947.a.c.  caseta/cartridge  RCA MI-12877+++  ca. 1944.a.c.  Cosmos Industries MX-303A/ANQ-1 - wire cartThumbnails+++  1947.a.c.  caseta/cartridge  RCA MI-12877+++  ca. 1944.a.c.  Cosmos Industries MX-303A/ANQ-1 - wire cartThumbnails+++  1947.a.c.  caseta/cartridge  RCA MI-12877+++  ca. 1944.a.c.  Cosmos Industries MX-303A/ANQ-1 - wire cartThumbnails+++  1947.a.c.  caseta/cartridge  RCA MI-12877

- primul casetofon comercial/pt. public (înaintea sa au existat: (i) aparatul german Textophon - vedeti alaturat caseta lui - care insa nu era destinat publicului, ci numai autoritatilor si (ii) un aparat militar american); foloseşte caseta tip RCA MI-12877 (vezi alăturat), avand ca suport magnetic firul de oțel; datorită concepţiei casetei, prezintă particularitatea montării suprapuse a capetelor , nu alăturate - cum se va face ulterior; 5 tuburi electronice: 6J7, 2 x 6SJ7, 6V6, 5Y3GT ; gama de frecvenţe redate: 100 -10.000 Hz; şasiu metalic, carcasa din bachelită; ventilator de incintă; cca 12 kg.
functional; cu microfon original tip MI-12016G si manuale de reparatie si folosire.

- first in the world domestic wire recorder with removable cassette (before it were just: (i) german item Textophon - see attached its cartridge - but it was used just by the authorities and (ii) an American military item); it uses the cassette type RCA MI-12877 (see photos); due to cassette’s design, it has 2 overlapped heads, not side by side; 5 electronic tubes + frequency range + weight > (see above); fan for enclosure’s cooling.
works ok, w. mike model MI-12016G, service and oper. manuals.

Author
RCA - Radio Corp. of America
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