Murphy Radio Model B31 From 1937

Cheapest of the 1937 Murphy range is this B31 straight receiver. It utilises the same cabinet as the AC/DC mains AD32, which as noted above is the cheapest mains model in the range that year. However, although the same cabinet is used for both, unexpectedly and surprisingly the battery version is rather more common today than the mains version. The AD32 is now a rarely seen radio, though the B31 still turns up. The B31 features an extra knob on the front of the cabinet for reaction, this being a T.R.F. radio. The picture below shows the small plywood back in position, as can be seen it still leaves easy access to the shelf on top where the H.T. battery would be positioned and to the right where the accumulator stood. Only three valves are used. Valve line-up is VP210, HL2, PEN231. 

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