Maxtrac Audio Jumper

MaxTrac Logic Board Jumpers and Connectors

https://www.repeater-builder.com/motorola/maxtrac/maxtrac-logic-board-jumpers.html

All 16-pin logic boards have three jumpers, JU551, JU601, and JU808. The MaxTrac manuals document two boards: the HLN9313 for the VHF/UHF/800 MHz radios, and the FRN5529 for the 900 MHz MaxTrac only. Any of these models …

The Definitive Guide to the 16 pin MaxTrac series Option ...

https://www.repeater-builder.com/motorola/maxtrac/maxtrac-option-plug.html

If you find a jumper to +12 inside the radio you can pull that jumper and install F801. 11: RX AUDIO: This pin is labeled "DISCR" in the Moto dcoumentation, and …

Maxtrac and Radius Mobiles - BatLabs

http://www.batlabs.com/maxrad.html

Interfacing to a repeater controller - QSL.net

https://www.qsl.net/kb8qeu/MaxTrac_GM300/maxtrac_interfacing.html

The above photo is of the official MaxTrac jumper plug: the top jumper is between pins 15 and 16 to enable the internal speaker. The lower jumper (pin 9 to 7) grounds the alarm input pin (e.g. forces it inactive no matter how the radio is programmed). The holes in the tab

Maxtrac to TinyTrak - QSL.net

https://www.qsl.net/kb8qeu/MaxTrac_GM300/Maxtrac_to_TinyTrak3.html

MaxTracs have the components that implement HearClear (a noise reduction technology based on a compandor circuit) mounted on the microphone jack / volume control circuit board in the control head. To add a COR circuit to a MaxTrac / Radius mobile the