1. Pengenalan
The Retevis RT622 is a compact and lightweight PMR446 two-way radio designed for clear and reliable communication. This license-free radio features a durable build, VOX hands-free operation, and a long-lasting rechargeable battery, making it suitable for various applications from outdoor activities to professional use in environments like restaurants or schools.
Ciri-ciri utama termasuk:
- Padat dan Ringan: Weighs only 113g and measures 2.14cm wide, making it highly portable.
- PMR446 License-Free: Operates on PMR446 frequencies, ready for use out of the box.
- Bunyi Jelas: Built-in CTCSS/DCS for filtering unwanted signals and ensuring crisp audio.
- VOX Bebas Tangan: Automatically transmits when voice is detected, eliminating the need to press the PTT button.
- Bateri boleh dicas semula: Equipped with a 1000mAh Li-ion battery for extended standby and usage times.
- Mesra pengguna: Simple operation with quick access to multiple functions via side buttons and keyboard shortcuts.
- Reka bentuk tahan lasak: Constructed from robust ABS anti-fall material for comprehensive protection.
2. Maklumat Keselamatan
Please read and understand all safety instructions before using your Retevis RT622 two-way radio. Failure to follow these instructions may result in injury, damage to the radio, or voiding your warranty.
- Keselamatan Bateri: Use only the specified battery and charger. Do not short-circuit, incinerate, or disassemble the battery.
- mengecas: Charge the radio in a well-ventilated area. Do not charge in extreme temperatures.
- Antena: Jangan sentuh antena semasa penghantaran.
- Gangguan: Turn off the radio in areas where radio devices are prohibited, such as hospitals or aircraft.
- Pendedahan Air: While water repellent (IPX4), avoid submerging the radio in water.
- Pembongkaran: Do not attempt to disassemble or modify the radio. Repairs should only be performed by authorized personnel.
- Perlindungan Pendengaran: Keep the volume at a moderate level to avoid hearing damage, especially when using earpieces.
3. Kandungan Pakej
Upon unpacking your Retevis RT622 Two-Way Radio, please verify that all items listed below are present and in good condition:
- 2 x Retevis RT622 Two-Way Radio
- 2 x Bateri Litium
- 2 x Kabel Pengecas Jenis-C
- 2 x Klip Tali Pinggang
- 1 x Manual Pengguna
4. Produk Lebihview
Familiarize yourself with the components of your Retevis RT622 radio:

Figure 1: Retevis RT622 Radio Components
- Antena: Untuk menghantar dan menerima isyarat.
- Power/Voice Volume Knob: Putar untuk menghidupkan/mematikan radio dan melaraskan kelantangan.
- Charger Light / Signal Light: Indicates charging status or signal activity.
- Kunci PTT (Tekan-untuk-Cakap): Tekan dan tahan untuk menghantar, lepaskan untuk menerima.
- Penceramah: Output audio yang diterima.
- MIC / Speaker Port: Untuk menyambungkan aksesori audio luaran.
- mikrofon: Untuk input suara semasa penghantaran.
- Channel Selector Plus (+): Menambah nombor saluran.
- Channel Selector Reduce (-): Mengurangkan nombor saluran.
- Kunci Kunci: Used in combination with channel buttons for specific functions like keypad lock.
- Palam USB: Port jenis-C untuk pengecasan.
- Penyambung Pengecas: Connects to the charging cable.
5. Persediaan
5.1. Mengecas Bateri
Before initial use, fully charge the radio's lithium-ion battery. The RT622 supports convenient Type-C direct charging.
- Connect the Type-C charging cable to the USB plug on the side of the radio.
- Connect the other end of the cable to a compatible USB power source (e.g., wall adapter, power bank, PC, car charger).
- The charger light will indicate charging status. Refer to the radio's LED indicator for full charge notification.

Figure 2: Type-C Direct Charging
5.2. Memasang Belt Clip
The RT622 comes with a removable belt clip for easy portability.
- Selaraskan klip tali pinggang dengan alur di belakang radio.
- Slide the clip upwards until it clicks securely into place.
- To remove, push the release tab (if present) and slide the clip downwards.

Figure 3: Attaching the Removable Belt Clip
6. Arahan Operasi
6.1. Hidupkan/Mati Kuasa dan Pelarasan Kelantangan
To turn the radio on or off and adjust the volume:
- Hidupkan kuasa: Rotate the Power/Voice Volume knob clockwise until you hear a click. The radio will announce the current channel.
- Pelarasan Kelantangan: Continue rotating the Power/Voice Volume knob clockwise to increase volume, or counter-clockwise to decrease volume.
- Matikan: Rotate the Power/Voice Volume knob counter-clockwise until you hear a click.
6.2. Pemilihan Saluran
The RT622 supports 16 PMR446 channels.
- Tekan ke Channel Selector Plus (+) button to move to a higher channel number.
- Tekan ke Channel Selector Reduce (-) button to move to a lower channel number.
- The radio will announce the selected channel number.
6.3. Menghantar dan Menerima
- Untuk Menghantar: Tekan dan tahan butang PTT (Push-to-Talk) button. Speak clearly into the microphone. The signal light will illuminate red.
- Untuk Menerima: Release the PTT button. The signal light will illuminate green when a signal is received.
6.4. Fungsi VOX (Pertukaran Beroperasi Suara)
The VOX function allows for hands-free transmission when your voice is detected.

Figure 4: Activating VOX Function
To quickly activate the VOX function:
- Tune the radio to channel 7.
- Matikan radio.
- Tekan dan tahan butang Channel Selector Plus (+) button while turning the radio back on.
- You will hear a voice prompt indicating "VOX ON" or "VOX OFF".
6.5. Fungsi Kunci Pad Kekunci
Kunci pad kekunci menghalang perubahan tetapan secara tidak sengaja semasa penggunaan.

Figure 5: Keypad Lock/Unlock
Untuk mengunci atau membuka kunci pad kekunci:
- In standby mode, simultaneously press the Channel Selector Plus (+) dan Channel Selector Reduce (-) butang.
- A single beep indicates the radio is locked. Repeat the process to unlock.
6.6. Pertukaran Bahasa
You can switch the voice prompt language between Chinese and English.

Figure 6: Switching Language
To switch the language:
- Tune the radio to channel 16.
- Matikan radio.
- Tekan dan tahan butang Channel Selector Plus (+) button while turning the radio back on.
- The language will switch between Chinese and English.
7. Penyelenggaraan
7.1. Penjagaan Bateri dan Penjimatan Kuasa
Penjagaan bateri yang betul memastikan prestasi optimum dan jangka hayat yang panjang.

Figure 7: Battery Management Features
- Fungsi Penjimatan Kuasa: If there is no operation for more than 10 seconds, the power saving function will automatically activate and resume upon receiving a signal.
- Amaran Bateri Rendah: Apabila bateri voltage drops to its lowest level, the radio will emit a "Please Charge" tone, indicating that the battery needs recharging or replacement.
- Kitaran Pengecasan: For best battery life, avoid frequent partial charges. Fully charge and discharge the battery periodically.
- Storan: If storing the radio for an extended period, ensure the battery is partially charged (around 50%) and store in a cool, dry place.
7.2. Pembersihan
- Lap permukaan radio dengan lembut, damp kain.
- Jangan gunakan bahan kimia, pelarut atau pembersih yang kasar.
- Pastikan penutup port pengecas ditutup rapat untuk mengelakkan habuk dan kelembapan daripada masuk.
7.3. Ketahanan

Figure 8: Strong Shell Material
The RT622 is built with a strong PC material shell, providing superior impact and abrasion resistance, making it suitable for various outdoor and demanding environments.
8. Penyelesaian masalah
If you encounter issues with your Retevis RT622 radio, refer to the following common troubleshooting steps:
| Masalah | Kemungkinan Punca | Penyelesaian |
|---|---|---|
| Radio tidak dihidupkan | Bateri habis atau tidak dipasang dengan betul. | Charge the battery fully. Ensure the battery is correctly seated. |
| Tidak boleh menghantar atau menerima | Saluran yang dipilih salah. Di luar julat. Bateri lemah. | Sahkan bahawa kedua-dua radio berada di saluran yang sama. Bergerak lebih dekat ke radio yang satu lagi. Cas semula bateri. |
| Kualiti bunyi yang buruk atau statik | Weak signal. Interference. Volume too low/high. | Move to an open area. Adjust volume. Ensure no obstructions. |
| VOX function not working | VOX is off. Microphone sensitivity too low. | Activate VOX as per instructions (Section 6.4). Ensure you are speaking clearly into the microphone. |
| Pad kekunci tidak bertindak balas | Kunci pad kekunci aktif. | Unlock the keypad by simultaneously pressing CH+ and CH- (Section 6.5). |
9. Spesifikasi
Detailed technical specifications for the Retevis RT622 Two-Way Radio:
- Jenama: Retevis
- Nombor Model: EUA9121H
- warna: Hitam
- Bilangan Saluran: 16
- Julat Kekerapan: 446.00625-446.19375MHz (PMR446)
- Julat Percakapan Maksimum: 3 Kilometers (in open and unobstructed areas)
- Voltage: 3 Volt
- Tahap Rintangan Air: Water Repellent (IPX4)
- Dimensi Produk (D x W x H): 2.1 x 5.5 x 13.5 cm
- Berat Barang: 113 Grams (battery included)
- Jenis Bateri: Litium Ion
- Purata Hayat Bateri: 10 Jam (penggunaan berterusan)
- Masa Siap sedia: Lebih kurang 72 Jam
- Bunyi Boleh Didengar: 40 Desibel
- Julat Suhu: -20 hingga 50 Darjah Celcius
- Peranti Serasi: Walkie talkies with the same PMR frequency band and Kenwood dual pin headphones.
10. Waranti dan Sokongan
Retevis provides comprehensive warranty and support for your RT622 Two-Way Radio:
- Tempoh Waranti: Waranti 2 tahun untuk badan radio dan waranti 1 tahun untuk aksesori.
- Polisi Pemulangan: Polisi pemulangan tanpa sebab 30 hari.
- Perkhidmatan Selepas Waranti: Perkhidmatan penyelenggaraan tersedia selepas tempoh jaminan; pembeli bertanggungjawab ke atas kos yang berkaitan.
- Sokongan Pelanggan: For any inquiries or support needs, please contact Retevis customer service on Amazon. We aim to reply within 12 hours.