Programming Motorola GM300 and GM338 with homemade cable

DIY Motorola Programming: Save Money & Build Your Own Cable! 🔌

Radio enthusiasts often struggle with the "Motorola tax"—expensive, hard-to-find programming cables for legacy gear. But if you have a GM300 or GM338, you don’t need to buy one!

VU3DXR has published a great walkthrough on creating a homemade programming cable. Whether you're setting up a repeater or just putting a local frequency into your mobile rig, this DIY solution is a lifesaver.

What’s inside: ✅ Pinout diagrams for GM300 & GM338. ✅ Circuit interface details. ✅ Tips for successful communication with the radio.

Read the full guide here: 👉 https://vu3dxr.in/programming-motorola-gm300-and-gm338-with-homemade-cable/

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