The Marconi CR100 HF communications receiver, also known as the B28, was ubiquitous in shacks for many years. Looking back through old Short Wave Magazines it often featured. Nowadays while the RCA AR88 and the HRO Senior are still talked about the CR100 is almost forgotten. The three sets are electrically quite similar, although very different in appearance.
This set, Fig. 1, came with a photocopy of the manual. Fig. 2 shows the top of chassis, with the lid lifted, and Fig. 3 the underside. As ever, the circuit would take up too much space here, but the full manual is available from the VMARS website, kindly made available to all, free:
www.vmarsmanuals.co.uk
It is also available in Wireless for the Warrior, Vol 3, Reception Sets, by Louis Meulstee. You…
