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RBJ; National Company; (ID = 755777) Commercial Re RBJ; National Company; (ID = 755778) Commercial Re
RBJ; National Company; (ID = 755779) Commercial Re
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RBJ; National Company; (ID = 755777) Commercial Re
National Company;: RBJ [Commercial Re] ID = 755777 933x407
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For model RBJ, National Company; Cambridge & Malden (MA):
National RBJ with British Made Power Supply from the Collection of HMS Collingwood Radio Museum
Country:  United States of America (USA)
Manufacturer / Brand:  National Company; Cambridge & Malden (MA)
alternative name
National Toy Co.
Year: 1941 ? Category: Commercial Receiver (may include amateur bands)
Valves / Tubes 9: 6D6 6D6 6C6 6C6 6D6 6D6 6F8 6C6 6V6
Main principle Superhet with RF-stage; ZF/IF 456 kHz
Wave bands Broadcast, Long Wave and more than two Short Wave bands.
Power type and voltage Alternating Current supply (AC) / 220-230 Volt
Loudspeaker - For headphones or amp.
Power out 2 W (unknown quality)
from Model: RBJ - National Company; Cambridge &
Material Metal case
Shape Rack
Notes coverage 50 - 400 kHz, 480 kHz - 30 MHz (9 plug in coil sets numbered 00 - 7), AM, CW (BFO);
Navy variant of the HRO junior in Rack, no crystal filter, no S-Meter, no bandspread; similar to RAS but with 456 kHz IF;
Navy designation CNA-46081, optional power supply CNA-20125, optional coil rack CNA-10075, optional mounting rack CNA-10036.
Net weight (2.2 lb = 1 kg) 66 kg / 145 lb 6 oz (145.374 lb)
Source of data Communications Receivers

Model page created by Martin Bösch. See "Data change" for further contributors.

All listed radios etc. from National Company; Cambridge & Malden (MA)
Here you find 430 models, 275 with images and 162 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.