Other Radio brands may work with the setup

• an APRS igate with Tx capability [for personal use] for a baofeng

There are many ways to achieve the audio cable connections. Below are simple diagrams. You can go even more advanced with more components and cleaning up audio

Source: reddit

ANother version.

• Android to UV-5r APRS cable schematic (M0TZO)
• Miklor UV Technical - Pinouts, PTTs, etc (M0TZO)