1. Introduction
The Radtel RT-470 is a versatile 10-watt multi-band handheld ham radio designed for reliable communication across various frequency ranges. It features VHF (2M), VHF2 (1.25M), and UHF (70CM) transmission/reception, along with AM 108-136MHz (aircraft band) and FM 136-620MHz reception. Equipped with a 2800mAh USB-C rechargeable battery and a 1.77-inch TFT color screen, this radio offers advanced functions such as one-key frequency matching, NOAA weather reception, frequency hopping, and scramble functions for enhanced privacy. It is suitable for a wide range of applications including outdoor activities, emergency preparedness, and professional use.
2. Safety Information
- Battery Safety: Use only the specified battery and charger. Do not short-circuit, incinerate, or disassemble the battery. Avoid exposing the battery to extreme temperatures.
- Antenna: Do not touch the antenna during transmission. Ensure the antenna is properly connected before operation.
- Interference: Turn off the radio in areas where radio devices are prohibited or can cause interference, such as hospitals, aircraft, or near medical devices.
- Water Resistance: This device is Not Water Resistant. Avoid exposure to water or high humidity.
- Hearing Protection: Avoid using the radio at high volume levels for extended periods to prevent hearing damage.
3. Package Contents
Verify that all items are present in your package:
- Radtel RT-470 Radio Unit
- Dual Band Antenna
- 2800mAh Rechargeable Lithium-Ion Battery
- Desktop Charger
- USB-C Charging Cable
- Belt Clip
- English User Manual (this document)
Image 3.1: Contents of the Radtel RT-470 package, including the radio, antenna, battery, desktop charger, and USB-C charging cable.
4. Product Overview
The Radtel RT-470 features a robust design with a 1.77-inch TFT color display for clear information display. Key controls and ports are strategically placed for ease of use.
Image 4.1: Detailed view of the Radtel RT-470, highlighting the antenna, power switch/volume knob, status indicator light, PTT launch key, function keys, speaker, on-screen headphone jack, and USB-C charging port.
4.1. Controls and Display
- Antenna: For transmitting and receiving radio signals.
- Power Switch/Volume Knob: Rotate to turn the radio on/off and adjust volume.
- PTT (Push-to-Talk) Key: Press and hold to transmit, release to receive.
- Function Keys: Programmable keys for quick access to features.
- Keypad: Numeric and special function keys for frequency input and menu navigation.
- Display: 1.77-inch TFT color screen showing frequency, channel, battery status, and other operational information.
- USB-C Charging Port: For direct charging of the radio.
5. Setup
5.1. Battery Installation
- Ensure the radio is powered off.
- Align the 2800mAh Lithium-Ion battery with the battery compartment on the back of the radio.
- Slide the battery into place until it clicks securely.
5.2. Antenna Attachment
- Locate the antenna connector on the top of the radio.
- Screw the dual-band antenna clockwise onto the connector until it is finger-tight. Do not overtighten.
5.3. Charging the Battery
The RT-470 battery can be charged using the included desktop charger or directly via the USB-C port.
- Using the Desktop Charger: Connect the desktop charger to a power outlet. Place the radio with the battery installed into the charging cradle. The indicator light on the charger will show charging status.
- Using USB-C: Connect the USB-C charging cable to the radio's USB-C port and to a compatible USB power source. The radio can be charged directly without the desktop cradle.
A full charge typically takes several hours. The battery indicator on the radio's display will show charging progress.
6. Basic Operation
6.1. Power On/Off and Volume
- To power on, rotate the Power Switch/Volume Knob clockwise until you hear a click.
- Continue rotating clockwise to increase volume; rotate counter-clockwise to decrease volume.
- To power off, rotate the knob counter-clockwise until you hear a click.
6.2. Channel and Frequency Selection
The RT-470 supports both VFO (Variable Frequency Oscillator) mode for direct frequency input and Channel mode for pre-programmed channels.
- VFO Mode: Enter frequencies directly using the keypad.
- Channel Mode: Use the up/down arrow keys or the keypad to select from 256 memory channels.
6.3. One-Key Frequency Match
This feature allows for quick pairing and grouping by copying a channel from another radio within close proximity (approximately 1 meter).
- Activate the One-Key Frequency Match function on your RT-470 (refer to the menu for specific activation steps).
- Place the transmitting radio close to your RT-470.
- The RT-470 will automatically detect and match the frequency and relevant settings.
Image 6.1: Illustration of the One-Key Frequency Match function, showing two RT-470 radios ready for quick channel copying.
7. Advanced Features
7.1. Multi-Band Operation
The RT-470 supports transmission and reception on multiple amateur radio bands:
- VHF (2M): 144-148 MHz
- VHF2 (1.25M): 200-260 MHz (TX/RX)
- UHF (70CM): 420-450 MHz
It also includes wide reception capabilities:
- AM Aircraft Band: 108-136 MHz (Receive only)
- FM Broadcast/Other: 136-620 MHz (Receive only)
Image 7.1: The RT-470's full frequency modulation capabilities, showing reception bands including AM air frequency, civil frequency, radio frequency, VHF frequency, maritime frequency, and police frequency bands.
7.2. NOAA Weather Receiver
The radio can receive NOAA weather alerts, providing timely information on weather conditions. Activate this function through the radio's menu system.
7.3. AM Aircraft Band Reception
Listen to global airport aviation frequencies in real-time within the 108-136 MHz AM band.
Image 7.2: The RT-470's AM Aviation Receiving feature, allowing users to listen to air traffic control communications.
7.4. Privacy and Communication Features
- Frequency Hopping & Scramble: These functions help maintain call privacy.
- CTCSS/DCS: Continuous Tone-Coded Squelch System / Digital Coded Squelch for filtering unwanted signals.
- DTMF: Dual-Tone Multi-Frequency for various control applications.
- VOX: Voice Operated eXchange allows hands-free transmission.
- Scan: Automatically scans through frequencies or channels.
- TOT (Time-Out Timer): Prevents excessively long transmissions.
- BCL (Busy Channel Lockout): Prevents transmission on an occupied channel.
- Repeater Function: Supports communication through repeaters to extend range.
- Roger Beep (Frog Sound): An audible tone indicating the end of a transmission.
Image 7.3: The 'End of Frog Call' feature, where a distinct frog sound indicates the conclusion of a transmission.
8. Maintenance
- Cleaning: Use a soft, damp cloth to clean the radio's exterior. Do not use harsh chemicals or solvents.
- Battery Care: Store the battery in a cool, dry place when not in use. Avoid fully discharging the battery for extended periods.
- Antenna: Regularly check the antenna connection for tightness.
- Storage: If storing the radio for a long time, remove the battery and store it separately.
9. Troubleshooting
- Radio not powering on: Ensure the battery is correctly installed and charged. Check the power/volume knob.
- No reception/transmission: Verify the antenna is securely attached. Check frequency/channel settings. Ensure the battery has sufficient charge.
- Poor audio quality: Adjust the volume. Check for obstructions around the speaker/microphone. Ensure the signal strength is adequate.
- Charging issues: Confirm the USB-C cable and charger are properly connected and functional. Check the charging port for debris.
10. Specifications
| Feature | Specification |
|---|---|
| Model Number | RT470 |
| Item Weight | 1.26 pounds |
| Product Dimensions | 4.92 x 1.97 x 4.92 inches |
| Battery Type | 1 Lithium Ion battery (included) |
| Battery Capacity | 2800mAh |
| Display Type | LCD (1.77" TFT Color Screen) |
| Number of Channels | 256 |
| Frequency Range (TX/RX) | VHF: 144-148 MHz, VHF2: 200-260 MHz, UHF: 420-450 MHz |
| Frequency Range (RX Only) | AM: 108-136 MHz (Air Band), FM: 136-620 MHz |
| Output Power | 10 Watt |
| Talking Range Maximum | 10 Kilometer (approx. 6.2 miles) |
| Voltage | 7.4 Volts |
| Water Resistance Level | Not Water Resistant |
| Special Features | Air Band RX, 10W Power, USB-C Charging, One Key Frequency Match, NOAA Weather Receiver, Frequency Hopping, Scramble, DTMF, VOX, Alarm, LED Flashlight, Squelch, Battery Save, Repeater, CTCSS/DCS, Scan, TOT, BCL, Roger Beep. |
11. Warranty and Support
The Radtel RT-470 comes with a 1-year warranty from the date of purchase. This warranty covers manufacturing defects under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or exposure to water.
For technical support, warranty claims, or service inquiries, please contact Radtel customer service through the official channels provided at the point of purchase or on the Radtel website.
