Eddystone EC10 receiver

This was the first transistorised communications receiver. Back in the 1960s, many lusted after one. I eventually got one in the 1970s. 

Actually it was very poor. By modern standards I expect a very low cost SDR is better. They still pop up on auction sites from time to time. They use germanium OC171 transistors which often get leaky and need replacing.

See https://sites.google.com/view/g3xbm4/home/hf-mf-and-lf/commercial-rigs/eddystone-ec10 .