Batboard

I've got one of those old red Motorola Alert Monitors and she is still working strong and loud ass effing hell. I saw inside there is an accessory port of somekind. What is it for and does anyone know the pinout?

I assume you're referring to the socket on the left side that almost looks like a tube socket. This is a metering socket , where the Mot. test set was plugged in for alignment.

Pin 1 White Wire 455Khz IF
Pin 4 Violet Discriminator
Pin 7 Green 1st Osc. Mult
Pin 8 Red A+
Pin 9 Blue Audio
Pins 11 & 14 Black Ground