1. Entwodiksyon
Thank you for choosing the Retevis RB639P Mini Two-Way Radio. This manual provides essential information for the safe and efficient use of your device. Please read it thoroughly before operating the radio and keep it for future reference.
2. Enfòmasyon sou Sekirite
Toujou obsève prekosyon sekirite debaz sa yo pou diminye risk dife, chòk elektrik ak blesi:
- Pa sèvi ak radyo a nan atmosfè eksplozif (pa egzanp, gaz ki ka pran dife, patikil pousyè, poud metalik).
- Do not open the radio casing. Repairs should only be performed by qualified technicians.
- Sèvi ak sèlman pil ak chajè ki apwouve.
- Kenbe radyo a lwen dlo ak imidite.
- Evite ekspoze pwolonje a limyè solèy la dirèk oswa tanperati ki wo.
- Pa sèvi ak radyo a si antèn la domaje.
3. Pake kontni
The Retevis RB639P package includes:
- 4 x Retevis RB639P Radio
- 4 x Wireless Headset
- 4 x Clip senti
- 2 x Type-C One-to-Two Charging Cable
- 1 x manyèl itilizatè

Figure 3.1: Included components of the Retevis RB639P package.
4. Pwodwi souview
The Retevis RB639P is a compact and portable mini two-way radio designed for convenient communication. It features a slim design, VOX function, and USB-C charging.
4.1. Konpozan Radyo

Figure 4.1: The ultra-slim design of the RB639P, measuring 18mm in thickness.

Figure 4.2: Multi-functional menu button with VOX, Bluetooth, Call Tone, and Roger Beep indicators.
5. Enstalasyon
5.1. Chaje batri a
The RB639P radio is equipped with a 1000 mAh rechargeable Li-ion battery. Before first use, fully charge the battery.
- Konekte kab chaje Kalite-C a nan pò USB-C radyo a.
- Connect the other end of the cable to a USB power source (e.g., USB adapter, PC, power bank, vehicle charger).
- The charging indicator will show the charging status. A full charge typically takes about 3 hours.

Figure 5.1: Various Type-C charging methods for the RB639P.

Figure 5.2: Battery specifications and features.
5.2. Tache Clip Belt la
Align the belt clip with the designated slots on the back of the radio and slide it down until it clicks into place.
5.3. Connecting the Wireless Headset
The RB639P supports wireless headset connection for hands-free operation.
- Ensure both the radio and the wireless headset are powered on.
- Follow the headset's instructions to enter pairing mode.
- On the radio, activate Bluetooth pairing via the multi-functional menu button (refer to Figure 4.2).
- Once paired, the headset will connect automatically when both devices are on and within range.

Figure 5.3: Wireless headset connection for hands-free use.
6. Operasyon
6.1. Power On/Off
To power on the radio, rotate the power/volume knob clockwise. To power off, rotate it counter-clockwise until it clicks.
6.2. Seleksyon chanèl
The RB639P has 16 channels. Rotate the channel selector knob to choose your desired channel. Ensure all radios in your group are on the same channel for communication.
6.3. Ajiste Volim
Vire bouton pouvwa/volim nan pou ajiste volim koute a.
6.4. Transmisyon ak Resepsyon
Pou transmèt, peze epi kenbe bouton PTT (Push-to-Talk) ki sou kote radyo a. Pale klè nan mikwofòn nan. Lage bouton PTT a pou resevwa.
6.5. Fonksyon VOX (Echanj ki opere pa vwa)
The VOX function allows for hands-free transmission without pressing the PTT button. To activate/deactivate VOX:
- Press the multi-functional menu button (refer to Figure 4.2).
- Use the + button to navigate to the VOX setting.
- Press the menu button again to confirm activation or deactivation.

Figure 6.1: Hands-free operation using the VOX function and wireless headset.
6.6. Fonksyon Alam Ijans
The RB639P includes an emergency alarm feature for critical situations.
- To activate the emergency alarm, press and hold the designated emergency button (often a side button, refer to your specific radio's button layout).
- The radio will emit a loud alarm sound.
- To deactivate, press the PTT button.

Figure 6.2: Emergency alarm feature for enhanced safety.
7. Antretyen
7.1. Swen batri
- Evite twòp chaj oswa vide batri a nèt.
- Sere batri a nan yon kote ki fre, sèk lè li pa itilize.
- Si w pa pral itilize radyo a pou yon bon bout tan, retire pil la.
7.2. Netwaye Radyo a
- Siye radyo a ak yon mou, damp twal.
- Pa sèvi ak pwodwi chimik piman bouk oswa pwodui netwayaj abrazif.
- Ensure the USB-C port cover is securely closed to maintain water resistance.
NAN. Depanaj
| Pwoblèm | Kòz posib | Solisyon |
|---|---|---|
| Radyo a pa limen | Batri fèb; Batri a pa byen enstale | Charge the battery; Reinstall the battery |
| Pa ka transmèt oswa resevwa | Incorrect channel; Out of range; Low battery | Verify channel settings; Move closer to other radios; Charge the battery |
| Pòv kalite odyo | Low battery; Obstructions; Volume too low/high | Charge the battery; Move to an open area; Adjust volume |
| Wireless headset not connecting | Not paired; Out of range; Headset battery low | Re-pair headset; Move closer; Charge headset battery |
9. Espesifikasyon
| Karakteristik | Detay |
|---|---|
| Nimewo Modèl | RB639P |
| Mak | Retevis |
| Koulè | Nwa |
| Kantite Chanèl | 16 |
| Gamme frekans | 446.00625-446.19375 MHz (PMR446) |
| Maksimòm Ranje Pale | 3 Kilomèt |
| Kalite batri | Iyon ityòm (1000 mAh) |
| Lavi batri | 11 èdtan |
| Tan pou chaje | Apeprè. 3 èdtan |
| Chaje Metòd | USB-C |
| Voltage | 3.7 Volts |
| Nivo rezistans dlo | Dlo ki reziste (IP67) |
| Dimansyon pwodwi (D x W x H) | 1.8 x 5.5 x 16.8 cm |
| Pwa | 200 gram |
| Karakteristik espesyal | Light and thin, VOX, Bluetooth |
| Aparèy konpatib | Ekoutè |
| Ranje Tanperati | -20 ~ + 55 ° C |
10. Garanti ak sipò
Retevis offers a 2-year warranty on the radio body and a 1-year warranty on accessories. Additionally, there is a 30-day no-reason return policy. After the warranty period, maintenance services are still available, with buyers responsible for associated costs.
For any inquiries or support, please contact us via Amazon. We aim to respond within 12 hours.
11. Videyo pwodwi yo
There are no official product videos specifically for the Retevis RB639P model available in the provided data.





