Maxtracs Trunking 800MHz

Trunking 800MHz Maxtracs
These are radios that usually have model numbers starting with D35 or D45.
You can convert a trunking Maxtrac or Radius back to conventional 800MHz operation. You will need to replace the trunking firmware in the radio with conventional firmware. You will then need to blank the logic board with Lab RSS, and re-initialize it as a conventional radio. Note that before changing the firmware and blanking the board, you should write down all the alignment settings in the radio.
Conventional Maxtrac's make nice receivers for receiving your local trunking system's data channel... for use in Trunker of course. If you don't know what Trunker is, you better check out Lindsay's Site. You will find that if you connect your data slicer to RX Audio (Pin 11) and Ground (Pin 7) on the Accessory Connector, you will have a nice little setup. One thing you will want to check though, is that JU551, a 3 pin jumper header on the logic board, is set to Position A. This will give you flat, unmuted audio on Pin 11 of the Accessory Connector. This is assuming of course that you are using a radio with a 16 pin Accessory Connector, otherwise, you are on your own.
If you're playing with Trunking Maxtracs and TrunkTrackers, you may be interested in this conversion spreadsheet. It is a Microsoft Excel document. It converts Motorola Talkgroup ID's to Maxtrac ID's and TrunkTracker ID's.
If you are working on tuning up a Trunked Maxtrac, here is the information on putting the radio into test mode.