[ARC5] Re: [Milsurplus] ZB-* and R-1/ARR-1 redux

[Mike Morrow]

> YG fed a rotating yagi that sent a CW letter every 45 deg.s.

A pilot's ZB decode card can be found on Mike Hanz's site at:

http://aafradio.org/docs//ZB-_Homing_Decode_Card.jpg

On slight adjustment...the letters were assigned at 30 degree intervals.

>Ingenious dang thing that, if found by surveilance rx, would reveal
>little because who'da thot of demodulating sig with a bcb rx?

It was a clever and useful system, which pre-dated WWII.  The last maintenance manual revision for the AN/ARR-2 that I know of is dated 1 MAY 54, so apparently the system saw usage into the mid-1950s at least.

Mike / KK5F