converting truking maxtrac to conventional, no audio?

mancow · Post by **mancow** » Tue Nov 20, 2001 5:10 am

I can't seem to get any audio out of a truking maxtrac that has been converted to a conventional 800 unit. It appears ok and the light flashes when a signal is received. There are several jumpers inside, do any need repositioned? I tried moving them around with no luck. I know the speaker is good and I can probe around on a couple of the jumpers and get unsquelched audio off them directly to an external speaker. I can't figure it out.
Does anyone have any ideas? I wonder if the audio pa is bad or is there a squelch gate hanging up somewhere?

Thanks

eacradio · Post by **eacradio** » Tue Nov 20, 2001 5:42 am

did it have audio before? What did you do to convert it to conventional? Do you have the jumper in the 16 pin plug?

mancow · Post by **mancow** » Tue Nov 20, 2001 4:21 pm

The radio had a blank controller and I intitialized it as a Maxtrac 300 800 mhz.
What pins need to be jumpered that you refer to?

eacradio · Post by **eacradio** » Wed Nov 21, 2001 5:26 am

You should have a jumper from pin 15 to 16 on the 16 pin conector on back of the logic board. Also, if this was a trunking radio, you will probably have to change the ROM chip to a conventional chip.