[ARC5] Connector question.

[Mike Morrow]

>An 8 pin connector like the PL-152A that has the markings MX-2/ARR-2 on 
>the cap which covers the place where the wires are supposed to come out 
>the back of it.  On the side of the body it says: CZR30617-1.  ANyone 
>know where this might have been used?

Originally it was used with the R-4/ARR-2 homing receiver when mounted in the early single receiver rack MT-7/ARR-2, which did not have an A-B audio bus select switch in front.  This plug made up connections 1 to 6 to complete the 28 vdc power circuit to the R-4, and pins 5 to 8 to connect the R-4 audio output to audio bus B.

The plug's audio circuit wasn't really needed after the MT-7A/ARR-2 was developed, since that rack has the common A-B switch on the front.  However, it still was commonly used in place of the A.R.C. 6787 wired plug (pins 1 to 6) for local LF/MF/HF receiver control or R-4 remote control in a rack with an A-B switch.  The AN/ARC-5 manuals say that, in that case, the connection between pins 5 and 8 should be lifted, but the several that I have are still factory stock configuration. 

>Sounds like it took the place of a PL-152A on the back of the receiver
>rack when an ARR-2 was installed.

Exactly.
 
Mike / KK5F