Addac adding machine
1926
Telephone crossbar switch, Swedish Ericsson, 1921
1921
Desk telephone transmitter and receiver (sectioned), 1926.
1926
Tablet Stone, Moretonhampstead & South Devon Railway
1924
model steam locomotive London, Brighton & South Coast Railway
1925
Working Model locomotive
1922
London & North Eastern Railway Steam Locomotive, 'Flying Scotsman'
1923
cane presented to Mr. Sidney Foreman for his first-aid work at the Charfield railway disaster
1924
Amplion loud speaker with wooden horn, 1925
1925
Straight horn loudspeaker, 1921-1926
1921-1926
Radio tuning coil No. 100, 1922-1923
1922-1923
Radio tuning coil No. 150, 1922-1923
1922-1923
Radio tuning coil No. 200, 1922-1923
1922-1923
Radio tuning coil No. 300, 1922-1923
1922-1923
Loud speaker valve type L.S.5. W/T, 1923
1923
Replica of the first Morse telegraph, 1835
1934
Demonstration radio receiver
1926
Gold amulet in the form of a cobra
2000-100 BCE
Gecophone broadcast receiver, model B.C 3200, 1924
1924
Novelty model
1955; 1830
"Swiftsure" copper posser by the British Vacuum Wsher Co. of Islington
1921
Framed poster advocating vaccination against smallpox
1923
Petrol locomotive
1925
model locomotive, London & North Western Railway
1925
Freud electronic laughing ball
1990-96
Main part of Marconi 1.5KW transmitter from 2LO
1922-1925
Ceramic milk jug, London & North Eastern Railway
1924
V2A Marconiphone receiver (long-range model) , 1922-1924
1922-1924
Gecophone Crystal Detector Radio Set No. 1, 1923
1923
Radio tuning coil No. 75, 1922-1923
1922-1923
Radio tuning coil No. 500, 1922-1923
1922-1923
Radio tuning coil No. 1000, 1922-1923
1922-1923
Radio tuning coil No. 750, 1922-1923
1922-1923
Radio tuning coil No. 400, 1922-1923
1922-1923
Ora wireless receiving triode, 1921
1921
Experimental television receiver used by JL Baird in demonstration, made 1925-1926
1925-1926
No. I.T. Morse tape printer, 1925
1925
Replica of Morse's second model of telegraphy apparatus, 1934
1934
Set concert coils, 1922-1923
1922-1923
Burndept mark IV tuner with glass back, 1922-1923
1922-1923
Burndept Ultra IV wireless receiver, glass back No. 4798, 1923
1923
Kelvinator electric compression domestic refrigerator no 5534
1926
Three-valve radio receiver, 1922-1925
1922-1925
BBC printing stamp issued to the Willesden Wireless Company
1922-1924
Loaded submarine telegraph cable, 1926
1926
Popular Wireless no. 1 vol. 1, 1922
1922
Model of Great Central Railway "Atlantic" Express Locomotive
1903 (original); 1982 (model)
Neolithic flint scraper
4000-2001 BCE
Card of Authority to use portable receiver, 1922
1922
Portable thermometer screen
1925