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HRO-500

HRO-500; National Company; (ID = 676339) Amateur-R
 
HRO-500; National Company; (ID = 676340) Amateur-R
 
HRO-500; National Company; (ID = 676341) Amateur-R
 
HRO-500; National Company; (ID = 676342) Amateur-R
HRO-500; National Company; (ID = 83009) Amateur-R HRO-500; National Company; (ID = 266284) Amateur-R
HRO-500; National Company; (ID = 266286) Amateur-R HRO-500; National Company; (ID = 266287) Amateur-R
HRO-500; National Company; (ID = 1128730) Amateur-R HRO-500; National Company; (ID = 2328226) Amateur-R
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HRO-500; National Company; (ID = 83009) Amateur-R
National Company;: HRO-500 [Amateur-R] ID = 83009 933x469
Select picture or schematic to display from thumbnails on the right and click for download.
For model HRO-500, National Company; Cambridge & Malden (MA)
 
Country:  United States of America (USA)
Manufacturer / Brand:  National Company; Cambridge & Malden (MA)
alternative name
 
National Toy Co.
Brand
Thrillbox
Year: 1964–1973 Category: Amateur-Receiver (amateur bands, may include broadcast bands)
Semiconductors (the count is only for transistors) 37:
Main principle Superhet, double/triple conversion; ZF/IF 2750/230 kHz
Wave bands Broadcast, Long Wave and more than two Short Wave bands.
Details
Power type and voltage Alternating Current supply (AC) / 115 Volt
Loudspeaker - This model requires external speaker(s).
Power out
from Radiomuseum.org Model: HRO-500 - National Company; Cambridge &
Material Metal case
Shape Tablemodel, with any shape - general.
Dimensions (WHD) 420 x 195 x 325 mm / 16.5 x 7.7 x 12.8 inch
Notes

Coverage 5 kHz - 30 MHz in sixty 500 kHz ranges, built in synthesizer, triple conversion up to 4 MHz, double conversion above 4 MHz; linear analog readout, preselector.

Net weight (2.2 lb = 1 kg) 14.5 kg / 31 lb 15 oz (31.938 lb)
Collectors' prices  
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.




  
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