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Description: ‘The radio sensation of the Century’ and possibly the first portable valve radio that could fit in a coat pocket. The use of HIVAC valves and its modular construction made it a small and simple-to-build radio. This booklet contains instructions for wiring and assembling Grid Leak’s Pocketphone’ radio receiver
![Grid Leak’s Pocketphone Instruction Manual 1937](https://www.valve-radio.co.uk/wp-content/uploads/2022/01/front-back-cover-300x218.jpg)