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7247

Information - Help 
ID = 6150
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Hytron; Salem (MA) 
Tube type:  Double Triode   Audio Frequency 
Identical to 7247
Similar Tubes
Normally replaceable-slightly different:
  12DW7
Predecessor Tubes 7025   12AX7   6C4  

Base Noval, B9A
Filament Vf 12.6 Volts / If 0.15 Ampere / Indirect / Parallel / series AC/DC
Description

Dissimilar sections dual triode, intended as preamplifier and phase splitter in Hi-fi amplifiers. First high-mu triode is similar to a section of a 12AX7/7025. The second triode is similar to a 6C4, with high drive capability.
CT heater may be parallel connected to operate at 6.3V 0.3A.
Registered to CBS-Hytron.

 
Text in other languages (may differ)
Tube prices 1 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Röhren-Taschen-Tabelle, (Franzis RTT)   
- - Manufacturers Literature
  7247.png
  7247: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Michael Schlör
 
7247_hammond.jpg
7247: My own collection
Hannu Alho

 
no15_g_3.gif
7247: RTT Schwandt
Günther Stabe

 
7247_techdat01.png
7247: RCA Tube Manual
Peter Hoddow


Usage in Models 1= 1956?? ; 6= 1959? ; 8= 1960?? ; 3= 1960? ; 2= 1960 ; 2= 1961?? ; 1= 1961? ; 2= 1961 ; 1= 1962?? ; 2= 1962? ; 4= 1962 ; 1= 1963?? ; 6= 1963 ; 4= 1965?? ; 1= 1972 ; 1= 1975??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):45


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