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HRO-7-R

HRO-7-R; National Company; (ID = 1429162) Amateur-R
 
HRO-7-R; National Company; (ID = 1429163) Amateur-R
 
HRO-7-R; National Company; (ID = 1429164) Amateur-R
 
HRO-7-R; National Company; (ID = 1429165) Amateur-R
 
HRO-7-R; National Company; (ID = 1429166) Amateur-R
 
HRO-7-R; National Company; (ID = 1429167) Amateur-R
 
HRO-7-R; National Company; (ID = 1429168) Amateur-R
 
HRO-7-R; National Company; (ID = 1429169) Amateur-R
 
HRO-7-R; National Company; (ID = 1429170) Amateur-R
 
HRO-7-R; National Company; (ID = 1429171) Amateur-R
HRO-7-R; National Company; (ID = 1284970) Amateur-R HRO-7-R; National Company; (ID = 1907260) Amateur-R
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HRO-7-R; National Company; (ID = 1284970) Amateur-R
National Company;: HRO-7-R [Amateur-R] ID = 1284970 933x525
Select picture or schematic to display from thumbnails on the right and click for download.
For model HRO-7-R, National Company; Cambridge & Malden (MA):
Aufnahme von der Ham Radio 2012, Friedrichshafen
 
Country:  United States of America (USA)
Manufacturer / Brand:  National Company; Cambridge & Malden (MA)
alternative name
 
National Toy Co.
Brand
Thrillbox
Year: 1947–1949 Category: Amateur-Receiver (amateur bands, may include broadcast bands)
Valves / Tubes 11: 6K7 6K7 6J7 6C4 6K7 6K7 6H6 6H6 6SJ7 6V6GT 6J7 0A2
Main principle Superhet with RF-stage; ZF/IF 456 kHz
Wave bands Broadcast, Long Wave and more than two Short Wave bands.
Details
Power type and voltage Alternating Current supply (AC) / 115 / 230 Volt
Loudspeaker - For headphones or amp.
Power out 1.5 W (unknown quality)
from Radiomuseum.org Model: HRO-7-R - National Company; Cambridge &
Material Metal case
Shape Rack
Notes coverage 0,05 - 30 MHz (9 ganged 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);
rack version of HRO-7, integrated noise limiter, grey micrometer dial and coil sets with linear marks;
external power supply SPU-697 (voltages: filaments 6,3V B+ 240V), optional rack speaker RFSH.
Source of data Communications Receivers
Mentioned in Photofact Folder, Howard W. SAMS (4820-12 Set 50 Folder 12)

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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