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Country:  United States of America (USA)
Manufacturer / Brand:  National Company; Cambridge & Malden (MA)
alternative name
National Toy Co.
Year: 1952 ? Category: Amateur-Receiver (amateur bands, may include broadcast bands)
Valves / Tubes 16: 6BA6 6BA6 6BE6 6C4 6BE6 6SG7 6SG7 6SG7 6H6 6H6 6SN7GT 6SJ7 6V6GT 6V6GT 6SJ7 0B2 5V4
Main principle Superhet, double/triple conversion; ZF/IF 2010/455 kHz
Wave bands Broadcast, Long Wave and more than two Short Wave bands.
Power type and voltage Alternating Current supply (AC) / 115 / 230 Volt
Loudspeaker - This model requires external speaker(s).
Power out 8 W (unknown quality)
from Model: HRO-60-R - National Company; Cambridge &
Material Metal case
Shape Rack
Dimensions (WHD) 483 x 267 x 447 mm / 19 x 10.5 x 17.6 inch
Notes coverage 0,05 - 30 MHz (9 coil sets 50-100 / 100-200 / 180-430 / 480-960 / 900-2050 kHz / 1,7-4 / 3,5-7,3 / 7-14,4 / 14-30 MHz, bandspread in HAM bands), AM/CW/SSB (BFO);
double conversion on frequencies above 7 MHz;
internal power supply, optional rack speaker HRO-60RS, optional crystal calibrator XCU-50-2, optional narrow band-FM adaptor NFM-83-50, optional 650S 6V-vibrator pack and MRR-2 mounting rack.
Source of data Shortwave Receivers - Past & Present (3rd ed.)

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.