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
GP350 schematic or info
Moderator: Queue Moderator
GP350 schematic or info
Aww screw it. I didn't wanna fool with it anymore anyhow.
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.
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?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.