Rebecca/Eureka transponding radar – British Radio Navigation SystemThe Rebecca/Eureka system was a British-developed radio navigation aid used during the Second World War [...]Read More... Posted October 17, 2026 (updated October 18, 2026) by Patrick
S-Phone Type 13 Mk. IV (1943) – Portable UHF Radio Transmitter-ReceiverThe S-Phone UHF duplex radiotelephone was a short-range wireless communication system over ultra high frequency bands developed during … Posted March 3, 2026 (updated July 15, 2026) by Pascal
