The Marconi B28 (CR100) receiver was a British-made radio developed and built for the Royal Navy and deployed on warships as from 1941. It remained the main radio receiver aboard Navy vessels...

The Marconi CR100 was one of the many communications receivers that appeared on the government surplus market in the 1950s and 1960s. The receiver was a single conversion superhet covering LF, MF, and HF bands.

Broadcast, Long Wave and more than two Short Wave bands. - For headphones or amp. Boatanchor (heavy military or commercial set >20 kg). In 1959, excess B28 receivers have been modified (Lt. Compley-Mey) with installation of a 10 W crystal controlled CW transmitter under the lid of the receiver.

Royal Navy variant, covering 60 kHz - 30 MHz (60-160 / 160-420 / 500-1400 kHz / 1,4-4 / 4-11 / 11-30 MHz), AM, CW (BFO). Linear analog dial, logging scales marked with numbers; 5 bandwidths.

The Marconi CR100 B28 A self - contained Communications Receiver of super heterodyne type with AVC for use on CW or Phone reception. As with other versatile equipment of the Forties, the CR100 was subject to a number of variations, most of them minor in specification, to suit particular Service needs.

'Admiralty Pattern B28' was the standard MF/HF receiver on the Royal Navy and Royal Canadian Navy ships in World War II. After the war, they were phased out and usually replaced with the Murphy B40 receivers in the Royal Navy and Royal Australian Navy.

Development of the Marconi CR100 commenced at the outbreak of the second world war and it finally went into production in 1941. Although it was generally remembered as being a Naval set, variants were in fact used by all three services. For instance, B28/CR100-7 variants saw service aboard Royal Navy warships. RAF versions were known as the R1297.

The CR100/1, /4, /5, /6, /7 and /8 were also called the Admiralty Model B28 receivers. Admiralty Pattern B28 was the standard MF/HF receiver on the Royal Navy and Royal Canadian Navy ships in World War II.

wwii marconi cr 100 receiver (b28) A general purpose communications receiver during World War 2 The Marconi CR100 B28 is a self contained Communications Receiver of super heterodyne type with AVC for use on CW or Phone reception.

Royal Navy variant, covering 60 kHz - 30 MHz (60-160 / 160-420 / 500-1400 kHz / 1,4-4 / 4-11 / 11-30 MHz), AM, CW (BFO). Linear analog dial, logging scales marked with numbers; 5 bandwidths.