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ID = 20717
Tube type:  Transmitting Triode, air cooled   UHF 
Identical to 6263
Similar Tubes
Normally replaceable-slightly different:
First Source (s)
Nov.1953 : - - Manufacturers Literature RCA datasheet

Base SPECIAL TUBEBASE in general
Filament Vf 6.3 Volts / If 0.28 Ampere / Indirect / Parallel, (AC/DC)

Transmitting, glass-metal, UHF pencil triode; 8W at 500MHz, forced air cooling required for max ratings.
Made by Philips, RCA, Sylvania, Tung-Sol.

Dimensions (WHD)
incl. pins / tip
x 60 x 25 mm / x 2.36 x 0.98 inch
Weight 24 g / 0.85 oz
Tube prices 1 Tube prices (visible for members only)
Literature Röhren-Taschen-Tabelle, (Franzis RTT)   
Tube Lore (I)   
6263: Private collection
Emilio Ciardiello

6263: RTT Schwandt
Günther Stabe

6263: Valvo,Senderöhren, 1983
Anonymous 15 Collector

Usage in Models 1= 1952

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

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