2502; Philips Radios - (ID = 721891) Radio 2502; Philips Radios - (ID = 366910) Radio
2502; Philips Radios - (ID = 366911) Radio 2502; Philips Radios - (ID = 366909) Radio
2502; Philips Radios - (ID = 632208) Radio 2502; Philips Radios - (ID = 721892) Radio
2502; Philips Radios - (ID = 888762) Radio 2502; Philips Radios - (ID = 1048279) Radio
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2502; Philips Radios - (ID = 721891) Radio
Philips Radios -: 2502 [Radio] ID = 721891 933x650
Select picture or schematic to display from thumbnails on the right and click for download.
For model 2502, Philips Radios - Deutschland
Country:  Germany
Manufacturer / Brand:  Philips Radios - Deutschland
Deutsche Philips-Ges.
Year: 1927/1928 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 3: B442 B424 B443
Main principle TRF with regeneration; 1 Special; 1 AF stage(s)
Tuned circuits 2 AM circuit(s)
Wave bands Broadcast (MW) and Long Wave.
Power type and voltage Storage and/or dry batteries / 4; 150; 18 Volt
Loudspeaker - This model requires external speaker(s).
Power out 1 W (unknown quality)
from Model: 2502 - Philips Radios - Deutschland
Material Various materials
Shape Tablemodel, with any shape - general.
Dimensions (WHD) 310 x 180 x 140 mm / 12.2 x 7.1 x 5.5 inch

Das Modell 2502 wurde hergestellt in den NSF-Werken in Hilversum (Niederlande).

Externer Lautsprecher 2000 ohm, meistens der Philips 2003.

Bis zum Abschluss eines Gerätevertrages zwischen Telefunken und Philips (24. November 1931) war es Philips nicht erlaubt Rundfunkgeräte in Deutschland herzustellen. Philips-Geräte die bis dann in Deutschland verkauft wurden, sind in den Niederlanden hergestellt worden. Lorenz hat in diesen Jahren aber einige Philips-Modelle (wie Paladin) ohne Röhren importiert und mit Telefunken-Röhren in Deutschland verkauft.

Net weight (2.2 lb = 1 kg) 4.6 kg / 10 lb 2.1 oz (10.132 lb)
Collectors' prices  
Source of data Radiokatalog Band 1, Ernst Erb
Mentioned in Les Radio PHILIPS de collection
Picture reference Eine Abbildung findet sich im Doppelband "Radio von gestern"

All listed radios etc. from Philips Radios - Deutschland
Here you find 2488 models, 2200 with images and 1502 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.


Forum contributions about this model
Philips Radios -: 2502
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philips: Philips 2502;
Francisc VISKY

The valve F215 is very difficult to find it. So I decided to replace it with E433. But there is a difference in heating voltage: for F215 is 2.5V, 1.5A and for E438 is 4V, 0,8A.

So I decided to build a small transformer from 2.5V to 4V. Calculating, I obtained: Q=2.5 cm2, n1=20 turn, 1 mm in diameter and n2=68 turn, 0.6 mm in diameter: n1 is connected to the transformer and n2 is connected to the filament of E438.

You can see in the picture attached. The only difficulty is a good shield for the transformer to have no influence in the audio circuit.

MH: I took the liberty of rendering this text anew for legibility. Regards, Mark


Philips Radios -: 2502
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