The CP-136M is an Audio Panel with Marker Beacon Receiver. This receiver is built in, unlike the CP-136.
The CP-136M is a basic Audio Panel that offers Marker Beacon lights and Mute, self-test function, and pushbutton operation.
An interesting feature of the CP-136M is the ability to monitor more than one audio source. For example, if you push the BOTH button, you can monitor both COMM transceivers at the same time. You may also listen to more than one NAV source at once.
The CP-136M has the following switch positions:
- 2 COMMs
- Both COMMs
- 2 NAVs
- Marker Beacon / DME