Introducció
The Radtel RT-493 is a robust and versatile GMRS (General Mobile Radio Service) handheld two-way radio designed for reliable long-range communication. Featuring a powerful 10W output, IP67 waterproof and dustproof rating, and a 2800mAh Type-C rechargeable battery, it is suitable for various outdoor activities and professional environments. This manual provides essential information for setting up, operating, and maintaining your RT-493 radio.
Què hi ha a la caixa
- 1x RT-493 GMRS Radio
- 1x Li-ion Battery with Type C Port
- 1x carregador d'escriptori
- 1x Antena
- 1x clip de cinturó
- 1x Manual d'usuari en anglès
Producte acabatview
The Radtel RT-493 is engineered for durability and ease of use. Below are key components and features:

Figure 1: Radtel RT-493 GMRS Radio, showing the main unit, detachable battery with Type-C port, desktop charger, and belt clip.

Figure 2: The RT-493 features a hidden display that is not easily scratched, ensuring durability and clear visibility of channel and battery information.

Figure 3: The RT-493 delivers 10W of power for farther penetration and a more stable signal, enhancing long-range communication.
Configuració
1. Instal·lació i càrrega de la bateria
The RT-493 comes with a 2800mAh Li-ion battery. Ensure the battery is fully charged before first use.
- Per instal·lar la bateria: Align the battery with the back of the radio and slide it upwards until it clicks into place.
- To Charge Battery: The radio supports both desktop charger and direct Type-C charging.

Figure 4: The RT-493 offers convenient charging options via a desktop charger or directly through its Type-C port, allowing for flexible charging anywhere.
2. Fixació de l'antena
Enrosqueu l'antena en sentit horari al connector de la part superior de la ràdio fins que quedi ben ajustada amb els dits. No l'estrengueu massa.
Instruccions de funcionament
1. Encendre/apagar i control de volum
Rotate the top-left knob clockwise to power on the radio. Continue rotating to increase volume. Rotate counter-clockwise to decrease volume and power off.
2. Selecció de canals
The RT-493 features 199 channels, including GMRS simplex and repeater channels. Rotate the top-right channel selector knob to choose your desired channel.

Figure 5: The RT-493 supports 44 GMRS simplex channels and 8 repeater channels, providing extensive communication options.
3. Transmissió i recepció
To transmit, press and hold the Push-To-Talk (PTT) button on the side of the radio. Speak clearly into the microphone. Release the PTT button to receive.
4. Funció VOX (centralita operada per veu)
La funció VOX permet el funcionament amb mans lliures. Quan s'activa, la ràdio transmetrà automàticament quan detecti la teva veu.
Per activar VOX: Press and hold both the PTT button and Side Key 2 (SK2) for 3 seconds while powering on the radio. You will hear a confirmation tone.
Video 1: Demonstration on how to activate the VOX function on the Radtel RT-493 radio by holding PTT and SK2 while powering on.
5. Funció de còpia de freqüència
The RT-493 supports one-key frequency copy from another radio.
- Pas 1: Power off the RT-493. Press and hold the PTT button, then power on the radio. Continue holding PTT until you hear three beep tones. The radio is now in frequency copy mode, indicated by a red flashing LED.
- Pas 2: Place the transmitting radio (the one you want to copy from) approximately 40cm (15.7 inches) away from the RT-493. Press the PTT button on the transmitting radio.
- Pas 3: If successful, you will hear one beep and the LED on the RT-493 will flash twice. The frequency is now saved. To copy the next channel, turn the channel knob on the RT-493.

Figure 6: Visual guide for the one-key frequency copy function, demonstrating the steps to transfer frequency settings from another radio to the RT-493.
Video 2: Detailed demonstration of the frequency copy feature on the Radtel RT-493, showing how to transfer frequencies from another radio.
6. UHF Scanning & Receiving
The RT-493 supports UHF scanning to find active channels.
To Activate Scanning: Briefly press Side Key 2 (SK2). The radio will begin scanning through channels. Press SK2 again to stop scanning.
Video 3: Demonstration of the scanning function on the Radtel RT-493, showing how to activate and use it to find active UHF channels.
7. High/Low Power Adjustment
The radio allows adjustment between high and low power output to conserve battery or extend range. Refer to the full user manual for specific button combinations or software programming for this feature.
8. English Voice Annunciation
The RT-493 provides English voice prompts for channel changes and other functions, enhancing usability.
To Switch Voice Prompt Language: Hold the S-K2 button for 5 seconds and power on the radio to switch between English and Chinese voice prompts.
Video 4: Demonstration of switching between English and Chinese voice prompts on the Radtel RT-493.
9. GMRS Repeater Capability
The RT-493 is capable of connecting to GMRS repeaters to extend communication range. Ensure your chosen channel is configured for repeater use.

Figure 7: The RT-493 supports 8 repeater channels, allowing connection to GMRS repeaters for significantly extended communication range.
Manteniment
Proper maintenance ensures the longevity and optimal performance of your Radtel RT-493 radio.
1. Neteja
The RT-493 is IP67 waterproof and dustproof. To clean, wipe the radio with a soft, damp cloth. For stubborn dirt, especially after exposure to mud or dust, you can rinse it under running water, ensuring the Type-C port cover is securely closed.
Video 5: Demonstration of the Radtel RT-493's IP67 waterproof capability, showing it submerged in water and still functioning.
2. Cura de la bateria
To maximize battery life, avoid fully discharging the battery frequently. Store the radio and battery in a cool, dry place when not in use for extended periods.
Resolució de problemes
If you encounter issues with your RT-493 radio, try the following basic troubleshooting steps:
- Sense energia: Ensure the battery is properly installed and fully charged. Check the power/volume knob.
- No es pot transmetre/rebre: Verify you are on the correct channel. Check antenna connection. Ensure the battery has sufficient charge.
- Mala qualitat d'àudio: Adjust volume. Check for obstructions around the microphone or speaker.
- Interval limitat: Ensure you are using high power mode if needed. Obstacles like buildings and terrain can significantly reduce range.
For more complex issues, please refer to the comprehensive user manual included in the box or contact Radtel customer support.
Especificacions
| Característica | Especificació |
|---|---|
| Marca | radtel |
| Número de model | RT-493 |
| Potència de sortida | 10W |
| Nivell de resistència a l'aigua | Impermeable IP67 |
| Nombre de canals | 199 |
| Interval de freqüència | GMRS 462/467 MHz |
| Bateria | Ió de liti de 2800 mAh (inclosa) |
| Carregant | Type-C Charging, Desktop Charger |
| Característiques especials | Built-in Display, VOX function, High/Low power adjustable, English voice annunciation, One key copy frequency, Channel Selector, High gain antenna |
| Pes de l'article | 9.9 unces |
| Dimensions del paquet | 8.82 x 6.5 x 2.64 polzades |
| País d'origen | Xina |
| Data de primera disponibilitat | 15 de juliol de 2024 |
Garantia i suport
The Radtel RT-493 GMRS Radio comes with a 1 anys de garantia del fabricant.
For technical support, warranty claims, or further assistance, please contact Radtel Direct customer service. Refer to the contact information provided in your product packaging or visit the official Radtel weblloc.





