GP350 schematic or info

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jistabout
Posts: 159
Joined: Wed Sep 01, 2004 8:22 am

GP350 schematic or info

Post by jistabout »

Hello,

I have a 2ch. UHF GP350 (P94MGC20A2AA) to which I just mounted an aftermarket (Pipo P7-V)DTMF pad. I'm thinking that the best place to tap into power and audio for this is at the connector inside on the bottom of the radio where the OEM DTMF option normally connects.

I need to look at a schematic of this radio if anyone who has one would be so kind.

Thanks Alot!

- Darrell
Aww screw it. I didn't wanna fool with it anymore anyhow.
Will
Posts: 6823
Joined: Tue Sep 04, 2001 4:00 pm

Post by Will »

Same connections as the GP300 and P110.
jistabout
Posts: 159
Joined: Wed Sep 01, 2004 8:22 am

Post by jistabout »

Why thanks Will, but I don't have schematics for either of those either :(

- DBH
Aww screw it. I didn't wanna fool with it anymore anyhow.
Will
Posts: 6823
Joined: Tue Sep 04, 2001 4:00 pm

Post by Will »

I'll look up the pin outs tomorow eve. If i remember, everything needed is on the bottom 'pins'.
jistabout
Posts: 159
Joined: Wed Sep 01, 2004 8:22 am

Post by jistabout »

Thank you :)
Aww screw it. I didn't wanna fool with it anymore anyhow.
Will
Posts: 6823
Joined: Tue Sep 04, 2001 4:00 pm

Post by Will »

There is a row of pads on the bottom of the board called the DTMF pad/Display connector, eight including the ground. Pin one is nearest the notch, and 8 is the ground.

Pin 2 is 5v
Pin 3 is PTT
Pin 4 is TX audio, but do not load down this line, use the biggest series resistor value and still get the 3kdev on the DTMF. Loading this line shunts the radios mic amp. This pin is the input to the IDC and Dev attenuator circuits.
flecom
Posts: 36
Joined: Mon Sep 12, 2005 6:38 am

Post by flecom »

Will wrote:There is a row of pads on the bottom of the board called the DTMF pad/Display connector, eight including the ground. Pin one is nearest the notch, and 8 is the ground.

Pin 2 is 5v
Pin 3 is PTT
Pin 4 is TX audio, but do not load down this line, use the biggest series resistor value and still get the 3kdev on the DTMF. Loading this line shunts the radios mic amp. This pin is the input to the IDC and Dev attenuator circuits.
do you know what the rest of the pins do?
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