The Kenwood/Trio JR-500S Receiver – by Dave Kimber

http://myweb.tiscali.co.uk/g8hqp/radio/radios/JR500Scircuit.gif

This Japanese receiver appeared in the UK around 1969. It was known as the Allied Radio A-2516 in the US - an example of 'badge engineering'. It uses 7 valves, two transistors, and a number of semiconductor diodes. It represents a reasonably serious attempt at the cheaper end of the amateur radio communications receiver market. It uses double-conversion, with a first tunable IF of 8.9-9.5MHz and second IF of 455kHz. The line-up is:

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