1. Introduction
This manual provides detailed instructions for the proper operation and maintenance of your TIDRADIO TD-H3 Ham Radio Handheld. Please read thoroughly before use to ensure safe and efficient communication.
2. What's in the Box
- 1 x TIDRADIO H3 Multi-Band Ham Radio
- 1 x Speaker Mic
- 2 x 2500mAh Type-C Batteries
- 1 x USB Cable for Programming & Charging
- 1 x 6.1-inch Stock Antenna
- 1 x 15.12-inch 771 AM Antenna (120/300MHz)
- 1 x Earpiece
- 1 x Back Clip
- 1 x User Manual
- 1 x Lanyard
- 1 x Desktop Charger

Figure 1: The TIDRADIO TD-H3 radio and its complete set of accessories, including two batteries, a speaker mic, and various antennas.
3. Product Features
The TIDRADIO TD-H3 is a versatile multi-band portable two-way radio designed for ham radio enthusiasts. It offers a wide range of features for communication and convenience.
- Multi-Band Reception: Supports 8-band receiving (including AM/FM) and 2-band transmitting.
- Versatile Programming: Features Type-C USB programming, wireless Bluetooth programming via phone, and compatibility with CHIRP and CPS software.
- Enhanced Battery: Comes with two 2500mAh Type-C rechargeable batteries for extended operation.
- 1.44-inch TFT Color Screen: Provides a clear and intuitive display for settings and information.
- One Key Frequency Match: Simplifies frequency matching with other radios.
- NOAA Weather Receiver: Functions as a weather alert system for emergency preparedness.
- DTMF Function: Supports various DTMF operations for advanced communication.
- Wireless Radio Replication: Allows for easy cloning of radio settings between devices.

Figure 2: Overview of the TD-H3's multi-function capabilities, including Chirp support, Type-C programming, NOAA, DTMF, and dual 2500mAh batteries.

Figure 3: Detailed breakdown of the radio's multi-band receiving and transmitting frequencies, including FM, AM, VHF, and UHF ranges.
Video 1: A comparison between the TIDRADIO TD-H3 and TD-H8 models, highlighting their differences and helping users choose the right radio for their needs.
4. Setup
4.1 Battery Installation & Charging
The TD-H3 comes with two 2500mAh Li-ion battery packs. Before first use, ensure the battery is fully charged. You can charge the battery directly via the USB-C port on the battery pack or by placing the radio with the battery installed into the desktop charger.

Figure 4: The radio shown alongside its two 2500mAh batteries, emphasizing long standby and working times.

Figure 5: Illustration of the 2500mAh battery's Type-C charging capability, highlighting its upgraded capacity and charging time.
4.2 Antenna Installation
Carefully screw the provided antenna into the SMA male port on top of the radio. Ensure it is tightened securely but do not overtighten. The package includes a 6.1-inch stock antenna and a 15.12-inch 771 AM antenna for different frequency ranges.

Figure 6: Top view of the radio showing the antenna port and rotary knob.
5. Operating Instructions
5.1 Power On/Off & Volume
To power on the radio, rotate the volume/power knob clockwise until you hear a
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