[ARC5] ARR-2 (ZBX) vs ARR-1/ZB/ZB-1/ZB-2/ZB-3

[MARK DORNEY]



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The electronics pictured are not quite in the process of being restored yet, and are minus any accessories. On the left is an AN/ARR-2 (ZBX) navigation radio with the ZB homing device built into it. On the right is a ZB-1 homing device. The AN/ARR-1, ZB, ZB-2 and ZB-3 are almost identical to the ZB-1, with the ZB and the ZB-1 having different coaxial connectors on the rear of the device (not pictured). The ARR-1 /ZB “Adapters” are better described as a “demodulators” in that they demodulated a scrambled signal hidden inside the carrier wave of another frequency into CW that (normally) the pilot of the USN receiving aircraft would hear, and using a decode card issued to him just before flight,  giving him the code letters for and the bearing to the sending transmitter ( an aircraft carrier or NAS ). The ARR-2 was a receiver coupled with a ZB demodulator coupled with a demodulator and switching gear all together in one electronic device. 
73

Mark D. 
WW2RDO


“In matters of style, float with the current. In matters of Principle, stand like a rock. “.   -   Thomas Jefferson 

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