Image
Category
Object type
Maker
Place
Date
Wavemeter, type TF975

Wavemeter, type TF975

1954-1969

Sullivan heterodyne wavemeter model K5, No. 21 1922

Sullivan heterodyne wavemeter model K5, No. 21 1922

1922

Forward spark 'B' wavemeter 80 meters, 1914-1918

Forward spark 'B' wavemeter 80 meters, 1914-1918

1914-1918

German cavity wavemeter

German cavity wavemeter

Wavemeter, wireless telegraphy, German No. 469

Wavemeter, wireless telegraphy, German No. 469

Japanese absorption wavemeter

Japanese absorption wavemeter

Wavemeter C

Wavemeter C

Telefunken wavemeter PQK2

Telefunken wavemeter PQK2

Telefunken wavemeter, 1908

Telefunken wavemeter, 1908

1908

Siemens wavemeter

Siemens wavemeter

General radio wavemeter, type 758A, 1942

General radio wavemeter, type 758A, 1942

1942

H.W.Sullivan wavemeter s/n 1565/1939

H.W.Sullivan wavemeter s/n 1565/1939

Heterodyne wavemeter, made by Burndept Ltd, c.1923

Heterodyne wavemeter, made by Burndept Ltd, c.1923

1923

H W Sullivan absorption wavemeter, s/n 1274, 1936

H W Sullivan absorption wavemeter, s/n 1274, 1936

German crystal wavemeter type PQK 1 s/n 15651/1939

German crystal wavemeter type PQK 1 s/n 15651/1939

McLachlan-Sullivan modulated C.W. wavemeter

McLachlan-Sullivan modulated C.W. wavemeter

Wavemeter, Air Ministry type W1117 (10D/10220), c. 1939. This battery-operated set could detect frequencies between 125kc/s and 20mc/s, or 125kHz-20MHz.

Air Ministry Wavemeter type W1117, c. 1939

1939

Wavemeter used on the first transatlantic television transmission, from Goonhilly in Cornwall.

Wavemeter used on the first transatlantic television transmission

Short-wave sub-standard wavemeter, No. 835/32, made by H.W. Sullivan and Co., complete with 6 coils

Short-wave sub-standard wavemeter

German wavemeter

German wavemeter

Absorption wavemeter, 10-23 Khz, Serial no.3060/1945, made in 1945, by H.W. Sullivan Ltd., London

Absorption wavemeter

1945

Telefunken wavemeter PQK3

Telefunken wavemeter PQK3

Sullivan and Griffiths substandard wavemeter, type R209, 1947

Sullivan and Griffiths substandard wavemeter, type R209, 1947

1947

Sullivan and Griffiths substandard wavemeter, type R209, 1947

Sullivan and Griffiths substandard wavemeter, type R209, 1947

1947