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541; Hofrela, (ID = 17315) Radio
541; Hofrela, (ID = 17316) Radio
541; Hofrela, (ID = 1641) Radio 541; Hofrela, (ID = 1189443) Radio
541; Hofrela, (ID = 1189444) Radio 541; Hofrela, (ID = 1189446) Radio
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541; Hofrela, (ID = 1641) Radio
Hofrela,: 541 [Radio] ID = 1641 698x525
Select picture or schematic to display from thumbnails on the right and click for download.
For model 541, Hofrela, Hochfrequenzlaboratorium; Zürich, ab 1938 Grenchen
Country:  Switzerland
Manufacturer / Brand:  Hofrela, Hochfrequenzlaboratorium; Zürich, ab 1938 Grenchen
Year: 1940/1941 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 5: ECH11 EBF11 EL11 AZ11 EFM1
Main principle Superheterodyne (common); ZF/IF 468 kHz
Tuned circuits 6 AM circuit(s)
Wave bands Broadcast, Long Wave and Short Wave.
Power type and voltage Alternating Current supply (AC) / 110-250 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 19 cm = 7.5 inch
Power out
from Model: 541 - Hofrela,
Material Wooden case
Shape Tablemodel, low profile (big size).
Price in first year of sale 345.00 SFr
External source of data E. Erb 3-907007-36-0
Source of data Radiokatalog Band 2, Ernst Erb
Circuit diagram reference Thali-Schemasammlung und Tungsram-Röhrenbestückung.
Picture reference Das Modell ist im «Radiokatalog» (Erb) abgebildet.

All listed radios etc. from Hofrela, Hochfrequenzlaboratorium; Zürich, ab 1938 Grenchen
Here you find 5 models, 5 with images and 5 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.