Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 4187
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: National Union Radio Corp.; Orange (NJ) 
Tube type:  High-vacuum Rectifier   Power-supply 
Identical to 1Z2
First Source (s)
10.Aug.1945 : Electron Tube Registration List rec. 420

Base Miniatur-7-Pin-Base B7G, USA 1940 (Codex=Zd)
Filament Vf 1.5 Volts / If 0.3 Ampere / Direct
Description High-voltage rectifier. 20kV PIV, 7.8kV max rms, 2mA max DC. 
Tube prices 3 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature

1Z2: Mia raccolta schemi.
Pier Antonio Aluffi

1z2_so.png 1Z2: ARRL Handbook 1972
Anonymous 10 Collector

More ...

Just Qvigstad
1Z2: SEL Handbuch 1964
Peter Hoddow

More ...
Usage in Models 1= 1955?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Collection of



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]

Data Compliance More Information