collection of objects

Collection of objects - radio valves, microphone amplifier, and a telegraph relay.

Donated by Mr A Regan

Details

Category:: Electronic Components

Object Number:: Y1972.9

type:: collection of objects

credit:: Gift of Mr A Regan

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Parts

radio valves

Assortment of 10 various radio valves, including early electronic valves and amplifying valves

Object Number:: Y1972.9.1

type:: radio valves

telegraph relay

Telegraph relay; used in early wireless telegraph equipment. No.3330. Round wood base with 7 brass screw terminals, vertical brass cylinder housing mechanism with opening glass topped lid.

Made by Silvertown in 1917.