- Country
- Netherlands
- Manufacturer / Brand
- NSF Nederlandsche Seintoestellen Fabriek, Hilversum
- Year
- 1926
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 69747
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 4
- Main principle
- TRF with regeneration
- Wave bands
- Broadcast (MW) and Long Wave.
- Power type and voltage
- Storage and/or dry batteries
- Loudspeaker
- - This model requires external speaker(s).
- Material
- Wooden case
- from Radiomuseum.org
- Model: M4 [A410] - NSF Nederlandsche
- Shape
- Tablemodel, low profile (big size).
- Dimensions (WHD)
- 540 x 340 x 325 mm / 21.3 x 13.4 x 12.8 inch
- Notes
-
Four valve receiver with variometer tuning. The blue aluminium front is divided into three sections: the left section contains the knob for primary tuning, in the middle a small scale, a wave length switch and secondary tuning. The right section contains reaction control, a loudspeaker connection and a lever for selectivity control (stronger/weaker). The receiver was available in three models: the M4 without doors (fl 250,-), the M4A with doors (fl 265,-) and the M4 Luxe, a luxurious model with doors (fl 285,-).
The tube set was changed into the set A435 A415 A415 and B405 later on.
- Net weight (2.2 lb = 1 kg)
- 11.9 kg / 26 lb 3.4 oz (26.211 lb)
- External source of data
- Radio Amateur Museum / Frans J.J. Driesens + ISBN 90-76014-04-3.
- Source of data
- Opkomst van de Nederlandse Radio-Industrie
- Literature/Schematics (1)
- Radio Historisch Tijdschrift 1995, attachment Nr. 3
- Other Models
-
Here you find 160 models, 118 with images and 85 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from NSF Nederlandsche Seintoestellen Fabriek, Hilversum