radiomuseum.org

 
Please click your language flag. Bitte Sprachflagge klicken.

RTP4

Information - Help 
ID = 27353
       
Country:
Italy
Brand: Fivre - tubes; Milano (MI)
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Vacuum Pentode   Power/Output 
Identical to RTP4 = E443H = L496D = PP4101 = RES964 = DW9
Similar Tubes
Normally replaceable-slightly different:
  PM24M
Other base:
  AL1
First Source (s)
Apr.1933 : Philips Bulletin
Successor Tubes 1935   AL1  

Base Europe 5-Pin (O5A, B5)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1.1 Ampere / Direct / Parallel, (AC/DC)
Description

By model of the very similar USA-types PZ or 47 from 1931, with the E443H Philips now introduced output pentodes in Europe with equally 250 Volts screen and plate voltage, it also brought the 7k-ohms load-standard to Europe which remained until the end of the tube era. The former E443N required 400 Vp, but extra 200 Vg2 [J.R. 2003-01-19]

 
Text in other languages (may differ)
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
zenithrtp4.jpg
RTP4: A. De Poi's collection
Alessandro De Poi

 
4_63.png
RTP4: Telefunken Werkstattbuch
Wolfgang Bauer

 


You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  
rmXorg