Summary

IF Amplifier stage for late World War Two (1939-1945) 'Back pack' field radio telephone. Contains one Rattheon type JRP5678 valve, resistors, capacitors etc.
Handwritten note accompanying this item:
AM427/U - AMPLIFIER STAGE FOR LATE W.W.2. 'BACK PACK' FIELD RADIO TELEPHONE. CONTAINS 1x RAYTHEON TYPE JRP5678 VALVE, RESISTORS, CONDENSERS ETC.

Physical Description

Metal cylinder with 7 pin connector at one end.

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