1. Introduction
Thank you for choosing the TYT TH-UV99 Walkie Talkie. This device is a high-performance, dual-band, dual-wait, and dual-standby radio designed for reliable communication. Featuring IP68 waterproofing, 10W power output, and a 2800mAh Type-C rechargeable battery, it is suitable for various outdoor and professional applications. This manual provides essential information for safe and efficient operation of your TH-UV99.
2. Package Contents
Upon unpacking, please ensure all items listed below are present and in good condition:
- 1 × TYT TH-UV99 10W IP68 Radio body
- 1 × 2800mAh Type-C Charging Port Li-ion Battery Pack 7.4V
- 1 × 136-174MHz & 400-480MHz Dual Band SMA-Male Antenna
- 1 × Desktop Charger
- 1 × AC Adapter
- 1 × Type-C Charging Cable
- 1 × Battery Clip
- 2 × Battery Clip Fixing Screw
- 1 × User Manual

The video below demonstrates the unboxing and initial inspection of the TYT TH-UV99 Walkie Talkie and its accessories.
Video 2.1: Unboxing and Initial Overview of TYT TH-UV99
3. Product Overview
Familiarize yourself with the components and controls of your TH-UV99 Walkie Talkie.

3.1. Parts and Controls
- Antenna: For transmitting and receiving radio signals.
- Indicator: LED light for status indications (e.g., transmission, reception, charging).
- Speaker: Outputs received audio.
- Function/Enter key: Used to access and confirm menu options.
- Numberal key: For direct frequency input and menu navigation.
- Power/Volume button: Rotates to turn the radio on/off and adjust volume.
- Microphone: For voice input during transmission.
- LCD display: Shows frequency, channel, menu options, and status.
- A/B switch key/Exit: Switches between A and B bands or exits menu.
- Flashlight: Activates the built-in torch.
- 1750Hz for repeater access and transmit DTMF and 2/5 tone signaling: Multi-function button for repeater access and tone signaling.
- PTT (Push-To-Talk): Press to transmit and release to receive.
- MONI: Short press disables noise squelching. Long press to scan (in FM radio mode).
- MIC/SP: Connection points for external microphone, earphone, and program cable.

4. Specifications
The following table details the technical specifications of the TYT TH-UV99 Walkie Talkie:
| Category | Specification |
|---|---|
| General | |
| Channel | 200 |
| Operating Voltage | 7.4VDC |
| Operating Temperature | -10°C ~ +50°C |
| Weight | 295g (Battery and antenna included) |
| Dimension | 126*62*43mm |
| Transmitter | |
| Frequency Range | 144-148/420-450MHz USA Version 144-146/430-440MHz EU Version 136-174/400-480MHz |
| Power | 10W |
| Modulation Type | FM |
| Spurious Power | ≤-15dB |
| Modulation Noise | <-40dB |
| Modulation Distortion | <5% |
| Frequency Stability | 5ppm |
| Max Fr. Deviation | ≤±5KHz |
| Current | ≤1600mA |
| Audio Response (300-3400Hz) | +6.5~-14dB |
| Adjacent Ch Power | ≥65dB |
| Receiver | |
| Frequency | 144-148/420-450MHz USA Version 144-146/430-440MHz EU Version 136-174/400-480MHz |
| Sensitivity | ≤0.2uV |
| Occupied Bandwidth | ≤16KHz |
| Selectivity | ≥65dB |
| Inter-mediation | ≥55dB |
| Audio Power | >500mW |
| Audio Distortion | ≤10% |
| Frequency Stability | 5ppm |
| Current | Standby:60mA, Working: 250mA |
| Audio Response (300-3400Hz) | +7~-12.5dB |
5. Setup
5.1. Battery Installation
- Align the battery pack with the grooves on the back of the radio.
- Slide the battery pack upwards until it clicks into place.
- Ensure the battery release latch is securely engaged.

5.2. Antenna Attachment
- Screw the SMA-Male antenna clockwise into the antenna connector on top of the radio until it is finger-tight. Do not overtighten.
5.3. Charging the Battery
The TH-UV99 features a 2800mAh Li-ion battery with a convenient Type-C charging port.
- Using the Desktop Charger: Connect the AC adapter to the desktop charger and plug it into a power outlet. Place the radio with the battery installed into the charging cradle. The indicator light will show charging status.
- Using the Type-C Port: Open the rubber cover on the bottom of the radio to expose the Type-C port. Connect the Type-C charging cable to the radio and a compatible USB power source.

6. Operating Instructions
6.1. Power On/Off and Volume Control
Rotate the Power/Volume knob clockwise to turn on the radio. Continue rotating to increase the volume. Rotate counter-clockwise to decrease volume and turn off the radio.
6.2. Channel and Frequency Selection
Use the up/down arrow keys to navigate through channels or adjust frequencies. The A/B switch key allows you to toggle between the two available bands (VHF/UHF).
6.3. One Key Frequency Copy
The TH-UV99 supports one-key frequency duplication. This feature allows you to quickly copy frequency settings from another radio. Refer to the menu options for 'One Key Frequency Copy' to initiate this process.

6.4. VOX (Voice Operated Transmission)
The VOX function enables hands-free transmission. When activated, the radio will transmit automatically when it detects your voice. Adjust the VOX sensitivity level in the menu to suit your environment.

6.5. Scanning Functions
The radio supports various scanning modes including Freq/Ch/CTCSS/DCS Scan. Access the 'SCAN' option in the menu to initiate scanning for active frequencies or tones.

6.6. FM Radio
The TH-UV99 can receive commercial FM radio broadcasts (65-108MHz). Use the menu to switch to FM radio mode and scan for stations.

6.7. Flashlight Function
The radio is equipped with a built-in flashlight. Press the dedicated flashlight button (often combined with another function key) to turn it on or off.

7. Advanced Features
7.1. Scrambler
The scrambler function encrypts your voice transmission, providing privacy for your conversations. Activate and deactivate the scrambler through the radio's menu settings.
7.2. DTMF/2Tone/5Tone Signaling
The TH-UV99 supports DTMF, 2Tone, and 5Tone signaling for advanced communication features such as selective calling or remote control. Configure these settings in the menu.

7.3. 1750Hz Repeater Access Tone
To access repeaters, the radio can transmit a 1750Hz tone. This is typically activated via a dedicated function key or through the menu, as indicated in the product overview.

8. Maintenance
8.1. General Care
- Keep the radio clean by wiping it with a soft, damp cloth. Avoid harsh chemicals or abrasive cleaners.
- Do not expose the radio to extreme temperatures or direct sunlight for prolonged periods.
- Ensure the Type-C charging port cover is securely closed when not charging to maintain IP68 waterproofing.
8.2. Battery Care
- Charge the battery fully before first use.
- Avoid overcharging or completely draining the battery to prolong its lifespan.
- Store the battery in a cool, dry place when not in use for extended periods.
9. Troubleshooting
If you encounter issues with your TH-UV99, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Radio does not power on | Low or dead battery; improperly installed battery | Charge the battery; ensure battery is correctly installed. |
| Cannot transmit or receive | Incorrect frequency/channel; antenna not attached; out of range | Verify frequency/channel settings; attach antenna securely; move closer to other radios or repeater. |
| Poor audio quality | Low signal strength; microphone/speaker issues; high noise environment | Check signal strength; ensure external accessories are connected properly; activate RX ENC (Environment Noise Cancellation). |
| Battery not charging | Charger/cable fault; improper connection | Check charger and cable for damage; ensure proper connection to radio and power source. |
10. User Tips
- Maximize Range: For optimal communication range, ensure your antenna is securely attached and you have a clear line of sight to the other radio or repeater. The 10W output provides significant power for extended range.
- Utilize Waterproofing: The IP68 rating means your radio is highly resistant to dust and water. Feel confident using it in challenging outdoor conditions, but always ensure port covers are sealed.
- Quick Frequency Setup: Use the 'One Key Frequency Copy' feature to quickly synchronize your radio with another TH-UV99 or compatible device, saving time during group setups.
- Clearer Audio: If you're in a noisy environment, enable the RX ENC (Environment Noise Cancellation) function to improve the clarity of received audio.
- Hands-Free Operation: Activate the VOX function for hands-free communication, especially useful when your hands are occupied. Adjust the VOX level to prevent accidental transmissions.
- Emergency Light: The built-in flashlight can be a handy tool in low-light conditions or emergencies.
11. Warranty & Support
For warranty information and technical support, please refer to the documentation provided with your purchase or contact the seller directly. Keep your proof of purchase for any warranty claims.





