Dear Jeong,
Please visit at the following URL for details on PTT. http://nwdigitalradio.com/dv3000-in-japan-portable-dummyrepeater/
I, however, have not updated the unit since I made it working properly and not used for many months. So, you might need to tweak it with the latest info on the both of software and hardware.
Dear Sir,
I was googling to find out the way of controlling DV3000 by PTT(kenwood PTT). I want to compose Soundcard on USB of Raspi and Sound Amplifier and PTT(kenwood PTT). Would send the detailed diagram and controller set of dummyrepeater and so on.
