weird gm300 problem

[bayfire300]

hi everyone,
i am having a weird problem w/ a gm300.........i have it programmed to the freq and pl's i want. but when i key the mic it does send a signal but my portable cant hear it........i see the s meter go up on the portable but no audio, as if the gm300 is not sending the pl tone.......if i take of the pl's on the portable it all works fine..............i tried it w/ a maxtrac and that works like it should. just the gm300 does it

any ideas?

otto

[txshooter]

hi everyone,
i am having a weird problem w/ a gm300.........i have it programmed to the freq and pl's i want. but when i key the mic it does send a signal but my portable cant hear it........i see the s meter go up on the portable but no audio, as if the gm300 is not sending the pl tone.......if i take of the pl's on the portable it all works fine..............i tried it w/ a maxtrac and that works like it should. just the gm300 does it

any ideas?

otto

Check your programing again........this is most likely the cause.

[bayfire300]

i triple checked........freq n pl are right........i even tried diff pl's.....could there be any onther place in the software which could inhibit the pl's?

otto

[RF_Burns]

Check for PL Inhibit programmed into the accessory connector. If its there, change it to NULL

[bayfire300]

yea i looked it is null

man i am lost
...........maybe te pl board is shot
otto

[jackhackett]

Are you using DPL? Is it a non-moto portable? If so, try programming it with inverted DPL.

Other than that you'll probably need to look at it on a service monitor.

[bayfire300]

no i am tryin to use 192.8...............it recieves the pl ok ........dont seem to transmit it tho......grrrr got me frustrated

otto

[bayfire300]

anyone have any ideas?

otto

[jackhackett]

Well, there is the reference mod adjustment on the RF board, perhaps somebody turned it down. It's the blue pot closest to the front of the radio. The pots usually have a magic marker line on their side from the factory, you can tell they've been adjusted if the mark doesn't line up.

Also the GMs have a problem with the feedthrough connector between the logic and RF boards, see my post here: http://batboard.batlabs.com/viewtopic.p ... eedthrough
I've never seen it cause the problem you're having, but I suppose it's possible.

[bayfire300]

thanks........i'll have a look at it

otto

[bayfire300]

well i tried everything i could...........it just wont tx the pl..........i turned off all signalling ....sequences all i saw in reference to tx.........i tried the logic board connector to........how can i reset the entire radio
maybe that will help

otto

[bayfire300]

i found it weeeeeeeeeeee.........it was an internal jumper.........go figure ....i was playin around w/ the jumpers (i figured i had nothing to lose) and poof the pl was transmitted.........thanks for all youe idea's guys i do appreciate them


otto