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Marconi

Valve List

R Type & DER Advert.
•Wireless World
•April 14, 1923.
R Type Advert.
•Wireless World
•April 28, 1923.
Brand Advert.
•Modern Wireless
•July, 1923.
Brand Advert.
•Modern Wireless
•August, 1923.
R Type & DER Advert.
•Wireless World
•August 8, 1923.
R Type & DER Advert.
•Modern Wireless
•September, 1923.
DER Advert.
•Modern Wireless
•November, 1923.
DE3 Advert.
•Modern Wireless
•December, 1923.
DER Advert.
•Wireless Weekly
•December 12, 1923.
R Type & DER Advert.
•Radio Valves and How to Use Them
•January, 1924.
Brand Advert.
•Modern Wireless
•January, 1924.
Brand Advert.
•Modern Wireless
•March, 1924.
DER Advert.
•Modern Wireless
•April, 1924.
R Type, DER & DE3 Advert.
•Modern Wireless
•May, 1924.
Brand Advert.
•Wireless Weekly
•May 14, 1924.
DE5 Advert.
•Wireless Weekly
•May 28, 1924.
DE4 & DE6 Advert.
•Wireless Weekly
•August 20, 1924.
Brand Advert.
•Wireless Weekly
•August 20, 1924.
Brand Advert.
•Wireless Weekly
•September 3, 1924.
KL1 Advert.
•The Wireless World and Radio Review
•February 2, 1927.
KL1 Advert.
•Wireless World
•February 2, 1927.
DEP215 Advert.
•Wireless World
•March 23, 1927.
DEP215 Advert.
•Wireless World
•May 11, 1927.
KL1 Advert.
•Wireless World
•May 25, 1927.
DEH210, DEL210 & DEP215 Advert.
•Wireless World
•June 1, 1927.
HL210 Advert.
•Wireless World
•November 28, 1928.
SG Valves S215, S410, S610 & S.8 Advert.
•Wireless World
•September 18, 1929.
SG Valves S215, S410, S610 & S.8 Advert.
•Popular Wireless
•September 21, 1929.
AC Valves Advert.
•Popular Wireless
•January 17, 1931.
HL2 Advert.
•Wireless World
•May 6, 1931.
HL2 Advert.
•Wireless World
•May 6, 1931.
Brand Advert.
•Valve Data Booklet, Wireless World
•1932.
AC Range & MH4.
•Popular Wireless
•December 17, 1932.
VP21 & B21 Advert.
•Wireless World
•November 17, 1933.
VS24 & VP21 Advert.
•Wireless World
•December 8, 1933.
VS24 & VMS4B Advert.
•Wireless World
•March 8, 1935.
'Stabilovolt' Voltage Stabiliser Advert.
•Wireless World
•September 4, 1936.
'Stabilovolt' Voltage Stabiliser Advert.
•Wireless World
•October 9, 1936.
Television CRT Advert.
•Television and Short-Wave World
•September, 1937.
KT2 Advert.
•Wireless World
•November 25, 1937.
'Stabilovolt' Voltage Stabiliser Advert.
•Wireless World
•March 2, 1939.
Brand Advert.
•Wireless World
•September, 1946.
TV Advert.
•Wireless World
•December, 1948.
Brand Advert.
•Radio Valve Data, Wireless World
•January, 1949.
Brand Advert.
•Festival of Britain Guide
•1951.
Brand Advert.
•Radio Valve Data 3rd Edition, Wireless World
•1952.
 
 

R

Q24

DEL210

L610

U12

KT2

HL2

X61MET

D41

PX4

KT33C

DH107

PCL84
 
 
 
 
 
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