1. Pengenalan
The Radtel RT-6D PRO DMR Radio is a dual-band two-way communication device designed for both amateur radio enthusiasts and professional users. It supports DMR Tier 1 and Tier 2 digital operations, as well as traditional analog communication, across VHF (144-148MHz) and UHF (420-450MHz) frequency ranges. This manual provides essential information for the proper setup, operation, and maintenance of your RT-6D PRO radio.

Figure 1: Radtel RT-6D PRO DMR Radio
2. Kandungan Pakej
Sahkan bahawa semua item terdapat dalam pakej anda:
- 1x RT-6D PRO Main unit
- 1x Bateri Li-ion 2400mAh
- 1x Dual band antenna
- 1x Klip Tali Pinggang
- 1x Charging base
- 1x Type-C Power cable
- 1x Manual Pengguna Bahasa Inggeris
3. Produk Lebihview
3.1 Komponen Radio

Figure 2: Radtel RT-6D PRO Labeled Components
Familiarize yourself with the main parts of your radio:
- Antena: Untuk menghantar dan menerima isyarat.
- Tombol Saluran: Digunakan untuk memilih saluran.
- Volume/ON/OFF Button: Controls power and audio volume.
- Lampu Penunjuk: Memaparkan status radio (cth., menghantar, menerima, mengecas).
- PTT1 / PTT2: Push-to-Talk buttons for initiating transmissions.
- Side-key: Programmable function button.
- Pad kekunci: For manual frequency input, menu navigation, and DTMF tones.
- Penceramah: Output audio yang diterima.
- Jack fon telinga: Untuk menyambungkan aksesori audio luaran.
- Type-C Charging/Programming Port: For battery charging and connecting to a computer for programming.
3.2 Ciri-ciri Utama
- GPS and APRS Functionality: Integrated GPS for location services and APRS for position reporting.
- Promiscuous Mode: Automatically scans and monitors digital channels for active talk groups and color codes.
- Port USB Jenis-C: Conveniently handles both charging and programming.
- Large Data Capacity: Stores 2,000 contacts, manages 90 Talk Group lists (up to 128 groups each), and accesses a global database of 500,000 contacts with CSV import capability.
- Channel and Zone Capacity: Supports 256 zones and 1024 channels.
- Penyulitan: Operates with AES-256 encryption protocols.
- One-Touch Frequency Scanner: Simplifies signal identification.
- Amaran Cuaca NOAA: Provides live weather feeds.

Figure 3: Radtel RT-6D PRO Feature Icons
4. Persediaan Awal
4.1 Pemasangan dan Pengecasan Bateri
- Sejajarkan bateri Li-ion 2400mAh dengan petak bateri di bahagian belakang radio.
- Luncurkan bateri ke tempatnya sehingga ia mengklik dengan selamat.
- To charge, connect the Type-C power cable to the radio's Type-C port and a compatible power source (e.g., wall adapter, car charger, power bank, or computer USB port). The indicator light will show charging status.
4.2 Lampiran Antena
- Skrukan antena dwi-jalur mengikut arah jam pada penyambung antena di bahagian atas radio sehingga ia ketat separas jari. Jangan terlalu ketatkan.
4.3 Basic Power On/Off
- To power on, rotate the Volume/ON/OFF button clockwise until you hear a click and the display illuminates.
- To power off, rotate the Volume/ON/OFF button counter-clockwise until you hear a click and the display turns off.
5. Operasi Asas
5.1 Pemilihan Saluran
Rotate the Channel Knob at the top of the radio to cycle through available channels. The selected channel will be displayed on the screen.
5.2 Melaraskan Kelantangan
After powering on, rotate the Volume/ON/OFF button to increase or decrease the audio output level.
5.3 Menghantar dan Menerima
- To transmit, press and hold one of the PTT (Push-to-Talk) buttons (PTT1 or PTT2) on the side of the radio. Speak clearly into the microphone.
- Lepaskan butang PTT untuk berhenti menghantar dan kembali ke mod menerima.
- When receiving a signal, the indicator light will illuminate, and audio will be heard through the speaker or connected earphone.
5.4 Contact Management
The RT-6D PRO supports extensive contact management features:
- Local Contacts: Store up to 2,000 individual contacts.
- Talk Group Lists: Manage up to 90 Talk Group lists, each supporting up to 128 groups.
- Global Database: Access a built-in global database of 500,000 contacts.
- Import Functionality: Import custom contact lists via CSV files for streamlined call management.

Figure 4: Contact Management Interface
5.5 GPS and APRS Functions
The integrated GPS module allows the radio to determine its location. This data can be used for APRS (Automatic Packet Reporting System) to transmit your position to other APRS-enabled devices or networks.
5.6 Amaran Cuaca NOAA
The radio can receive NOAA weather alerts, providing timely information on severe weather conditions in your area.
6. Ciri Lanjutan
6.1 DMR Tier 1 & Tier 2 Operation
The RT-6D PRO supports both DMR Tier 1 (unlicensed, direct mode) and Tier 2 (licensed, repeater mode) digital communication, offering enhanced audio quality and spectral efficiency compared to analog modes.

Figure 5: 1024 Channel Capacity and Call Types
6.2 Promiscuous Mode
This mode allows the radio to automatically scan and monitor all digital channels, identifying active talk groups and color codes without prior programming, facilitating seamless communication in dynamic environments.
6.3 Encryption Protocols (AES-256)
For secure communications, the RT-6D PRO supports AES-256 encryption, ensuring privacy and preventing unauthorized interception of your transmissions.
6.4 Programming via Type-C Port
The radio can be programmed using Customer Programming Software (CPS) via the Type-C USB port. This allows for customization of channels, contacts, talk groups, and other advanced settings. Refer to the specific CPS software manual for detailed programming instructions.

Figure 6: 10W High Power Transmission
7. Maklumat Keselamatan
Please read and adhere to the following safety guidelines to ensure safe operation and prevent damage to your radio:
- Persekitaran Operasi: Operate the radio in environments with temperatures between 0-40°C and below 2000m altitude. Operating outside these conditions may damage the radio.
- Nilai SAR: The radio has been tested for Head SAR (25mm from device) and Body SAR (0mm from device, with headset and belt clip). Specific Absorption Rate (SAR) values are: Face up (25mm): 0.277W/Kg; Back (0mm): 4.061W/Kg; Hand (0mm): 4.270W/Kg.
- Keselamatan Bateri: Risiko letupan jika bateri diganti dengan jenis yang salah. Buang bateri terpakai mengikut peraturan tempatan.
- Amaran Am: Be cautious of electric shock, flammable materials, and ionizing radiation.

Figure 7: Safety Declaration (German original, summarized above)
8. Penyelenggaraan dan Penjagaan
Proper care will extend the life of your Radtel RT-6D PRO radio:
- Pembersihan: Gunakan yang lembut, damp kain untuk membersihkan bahagian luar radio. Jangan gunakan bahan kimia atau pelarut yang keras.
- Tahan Air: Radio ini adalah Bukan Tahan Air. Avoid exposure to water, rain, or high humidity.
- Penjagaan Bateri: Store the battery in a cool, dry place when not in use. Avoid overcharging or fully discharging the battery frequently.
- Storan: When storing for extended periods, remove the battery and store the radio in a dry, dust-free environment.
9. Penyelesaian masalah
9.1 Isu dan Penyelesaian Biasa
| Isu | Kemungkinan Punca | Penyelesaian |
|---|---|---|
| Radio tidak dihidupkan | Low or depleted battery; improperly installed battery. | Charge the battery fully. Ensure the battery is correctly installed. |
| Poor signal reports or audio quality | Loose antenna connection; incorrect microphone gain setting; wrong frequency/channel. | Ensure antenna is securely attached. Adjust microphone gain via CPS if available. Verify correct frequency and channel settings. |
| Difficulty programming via Type-C port | Incorrect CPS version; driver issues; antivirus interference; faulty cable. | Download the latest CPS from the official Radtel website. Install necessary drivers. Temporarily disable antivirus software during installation/programming. Try a different Type-C cable. |
| Incorrect time display or GPS issues | Firmware bug; poor GPS signal reception; incorrect UTC offset setting. | Check for firmware updates. Ensure the radio has a clear view of the sky for GPS signal acquisition. Verify UTC offset settings in the radio menu or CPS. |
| Radio stops receiving intermittently | Software/firmware issue; channel interference. | Restart the radio. Try switching to a different channel and then back. Check for firmware updates from Radtel. |
10. Spesifikasi
| Ciri | Spesifikasi |
|---|---|
| Nombor Model | RT-6D PRO |
| Berat Barang | 1.45 paun |
| Dimensi Produk | 1.5 x 2.36 x 9.84 inches (radio body: 1.57"D x 2.36"W x 10.23"H) |
| Jenis Bateri | 1x 9V Li-ion battery (included) |
| Bilangan Saluran | 1024 |
| Julat Kekerapan | 144-148Mhz / 420-450Mhz |
| Julat Percakapan Maksimum | 6 Kilometer |
| Voltage | 7.4 Volt |
| Tahap Ketahanan Air | Bukan Tahan Air |
| Ciri Khas | GPS/APRS, Type C Charging, Digital/Analog, 500K Global Contacts |

Figure 8: Radtel RT-6D PRO Dimensions
11. Waranti dan Sokongan
11.1 Maklumat Waranti
The Radtel RT-6D PRO radio comes with a Waranti 1 Tahun. Sila simpan bukti pembelian anda untuk tuntutan waranti.
11.2 Sokongan Pelanggan
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact Radtel customer support through their official website or the retailer where the product was purchased. Ensure you have your model number and purchase details ready when contacting support.