Re: Motorola GM300/Maxtrac rear rx pin not passing audio
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Anything else on the Disc line other than the SC50?? Does the audio into the controller come from the SC50 or DISC audio out??? You have to consider both input impedances in parallel if it is ... but if I recall the DISC out is buffered from an OP amp. ? You will need to troubleshoot the maxtrac. ? Check to see if there is audio on the in of the opamp.
Andy
I will start out by saying this is the second gm300 to do this to me. I use it as a repeater receiver. Does very well for what it is. The unfiltered rx audio from the gm300 feeds a masters SC50 micor squelch/PL board then from there it goes to the rlc controller. The actual receive in the radio still works but that pin on the rear will not pass any audio. When the repeater is keyed it is just a dead key. Can¡¯t give the controller any commands either¡ when this happened the last time I just put in a new GM 300 and problem was solved. They were each in service about a year and a half before this happened. Has anyone experienced the same issue? I have the previous gm300 here with me, but I have not done any digging to see what has failed. The one that¡¯s on the repeater now is still up there till I can find time to go up there and swap it out with something else or get to the bottom of this.. any help is appreciated.
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