Uniden UH820 Series Owner's Manual

To perform a factory reset on the Uniden UH820, turn off the device, then press and hold the PTT and Call buttons while turning the device back on. Hold until the device resets and releases all buttons.
The Uniden UH820 can typically achieve a range of up to 10 kilometers under optimal conditions, such as unobstructed line of sight and minimal interference.
To improve battery life, reduce the transmission power, use the battery save mode, and ensure the device is turned off when not in use. Regularly charging the battery and avoiding extreme temperatures can also help.
If your UH820 is not transmitting, check if the battery is fully charged, ensure the antenna is properly attached, verify that you are on the correct channel, and check for any obstructions or interference in your area.
To change the channel, press the channel button on the side of the device, then use the up or down buttons to navigate to your desired channel. Press the channel button again to confirm your selection.
Yes, the Uniden UH820 can communicate with other brands of transceivers as long as they are on the same frequency and use the same CTCSS/DCS codes for privacy settings.
To activate the VOX feature, press the menu button until the VOX icon appears on the display, then use the up or down buttons to adjust the sensitivity level. Confirm your selection by pressing the PTT button.
If the audio quality is poor, check the volume setting, ensure the microphone and speaker are not obstructed, and verify that you are within range and there are no significant sources of interference nearby.
To use the call tone feature, press the call button on the side of the transceiver. This will send a call tone to other transceivers on the same channel. You can change the call tone by accessing the menu and selecting the call tone option.
If the UH820 does not turn on, ensure that the battery is properly installed and charged. Try replacing the battery if possible and check for any signs of damage to the device. If the problem persists, contact Uniden customer support.