Top View

Bottom view showing traces.

Note the location of the 4PDT switch contacts. One is unused [center contact], locate mounting hole to the far right.

Note the White and Shield tied to Chassis ground near the top right of the picture using a black jumper wire. The red wire next to it is from the battery positive terminal. The black wire soldered across a jumper trace located here is to tie RX and TX switching to common Chassis and battery grounds together back towards the mic cords' entry point into the handset.

Return to CA-75 Microphone page.

Disclaimer: Although the greatest care has been taken while compiling these documents,

we cannot guarantee that the instructions will work on every radio presented.