| Problem | Root Cause | Solution | | :--- | :--- | :--- | | No power after install | Battery latch not fully engaged | Remove and re-seat the battery until snap | | High SWR warning (icon flashes) | Antenna not tuned for frequency | Check band selection; replace with correct antenna | | Audio distorted in vehicle | Ground loop from DC supply | Install a ground loop isolator in speaker line | | GPS not locking | Installed near metal roof (Faraday cage) | Use external GPS antenna (HX-GPS-EXT) | | USB programming fails | Driver not installed | Download “CP210x Universal Windows Driver” |
The radio supports a wide array of analog and digital waveforms: radio set hx prc 6020 technical data install