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Gecophone crystal detector radio set no. 1, 1923

Radio Communication

1923

Three-valve radio receiver, 1922-1925

Radio Communication

1922-1925

The British Laundry Marking Machine

Water Supply & Sanitation

around 1922

Crystal radio receiver

Radio Communication

c.1923

Savoy Hill 'Meat Safe' Microphone Stand

Television

1923

Amplion loud speaker with wooden horn, 1925

Radio Communication

1925

Radio Times volume 1 No. 1, 1923

Radio Communication

1923

The Terminus (Penzance Station)

Pictorial Collection (Railway)

1925

Main part of Marconi 1.5KW transmitter from 2LO

Radio Communication

1922-1925

Marconi-Sykes Magnetophone

Television

1923

Popular Wireless no. 1 vol. 1, 1922

Radio Communication

1922

Type C crystal radio receiver

Radio Communication

c.1925

"Dreadnought" bookmaker's bag by the Richmond Time Recording Co.

Time Measurement

c. 1925

Flying Scotsman

Locomotives and Rolling Stock

1923

Framed poster advocating vaccination against smallpox

Public Health & Hygiene

1923

No. I.T. Morse tape printer, 1925

Telecommunications

1925

Gecophone broadcast receiver, model B.C 3200, 1924

Radio Communication

1924

H.M.V. table grand gramophone, model 103, 1925.

Sound Reproduction

1925

BBC printing stamp issued to the Willesden Wireless Company

Radio Communication

1922-1924

Model of the periodic system of de Chancourtois

Experimental Chemistry

1925; 1862

V2A Marconiphone receiver (long-range model) , 1922-1924

Radio Communication

1922-1924

Pathé Baby-Cine 9.5mm camera

Cinematography

1923

Marconi-Sykes Magnetophone microphone

Television

1923

child's china tea plate, 1922-1923

Radio Communication

1922-1923

Two-wire telephone repeater, 1923-1925

Telecommunications

1923-1925

Radio tuning coil No. 750, 1922-1923

Radio Communication

1922-1923

Burndept Ultra IV wireless receiver, glass back No. 4798, 1923

Radio Communication

1923

'Caerphilly Castle' Steam locomotive

Locomotives and Rolling Stock

1923

Set concert coils, 1922-1923

Radio Communication

1922-1923

Radio tuning coil No. 300, 1922-1923

Radio Communication

1922-1923

Hailwood's type 01 miner's lamp

Coal Mining

c. 1925

Ceramic milk jug, London & North Eastern Railway

Passenger Comforts

1924

Radio tuning coil No. 1000, 1922-1923

Radio Communication

1922-1923

Cosmos DE.11 general-purpose triode valve (McVitie Weston valve collection), 1924

Electronic Components

1924

16-mm cine camera

Photographic Technology

c.1925

Radio tuning coil No. 400, 1922-1923

Radio Communication

1922-1923

loud speaker valve type L.S.5. W/T, 1923

Electronic Components

1923

Radio tuning coil No. 75, 1922-1923

Radio Communication

1922-1923

Burndept mark IV tuner with glass back, 1922-1923

Radio Communication

1922-1923

Radio tuning coil No. 150, 1922-1923

Radio Communication

1922-1923

Cossor Wurncell W.1 output triode valve (McVitie Weston valve collection), 1923

Electronic Components

1923

Thorpe 4-electrode valve (McVitie Weston valve collection) 1924

Electronic Components

1924

Radio tuning coil No. 100, 1922-1923

Radio Communication

1922-1923

Radio tuning coil No. 500, 1922-1923

Radio Communication

1922-1923

Radio tuning coil No. 200, 1922-1923

Radio Communication

1922-1923

Section of Distribution Frame

Telecommunications

1922

Card of authority to use portable receiver, 1922

Radio Communication

1922

model locomotive, London & North Western Railway

Railway Models

1925

Manufactured insulin, 'Iletin', United States, 1923

Therapeutics

1923

Peter Pan 'box camera' folding gramophone, 1924.

Sound Reproduction

1924