Introduzione
This manual provides comprehensive instructions for the operation, maintenance, and troubleshooting of your Retevis RA685 (VHF/UHF Dual Band) or RA85 (GMRS) two-way radio. Please read this manual carefully before using the device to ensure safe and optimal performance.
Figure 1: Retevis RA685/RA85 Two-Way Radio Overview. Key features include dual-band operation (UHF/VHF or GMRS), Type-C charging, frequency measurement, and VFO mode.
Caratteristiche del prodotto
- Funzionamento a doppia banda: RA685 supports VHF (144-146MHz TX/RX) and UHF (430-440MHz TX/RX). RA85 supports GMRS.
- Capacità del canale: RA685 features 128 channels, RA85 features 60 channels.
- Adjustable TX Power: RA685 offers 5W/3W/1W adjustable power. RA85 offers 5W/0.5W.
- Ricarica USB di tipo C: Convenient and efficient charging via USB Type-C port. Supports wall, car, power bank, and PC charging.
- 1.6 Inch Dot Matrix Display: Provides clear display of data and details.
- Funzione di misurazione della frequenza: Measures frequency and CTCSS/DCS, with copy function.
- Special Digital Mute Function: CTCSS/DCS/DTMF signaling code rejects unnecessary calls, ensuring secure communication and no eavesdropping.
- Funzione VOX: Consente il funzionamento a mani libere senza premere il pulsante PTT.
- Radio FM digitale: Built-in FM radio (65-108MHz).
- One-click Alarm Function: Per situazioni di emergenza.
- Canali meteorologici NOAA: (GMRS version only) Keeps you informed with the latest weather forecasts.
- Compatto e portatile: Lightweight design (223g including antenna and battery) with comfortable grip. Dimensions: 121*61*33mm.
- Comunicazione a lungo raggio: Compatible with repeaters to strengthen signal and communication range.
- Funzioni aggiuntive: TOT (Time-out Timer), Monitor, Busy Channel Lockout, Squelch, Keyboard Lock, Power Save, Backlight, Flashlight, Dual Watch.
Contenuto della confezione
Si prega di verificare che tutti gli articoli elencati di seguito siano inclusi nel pacchetto:
Figure 2: Retevis RA685 Package Contents. Includes the radio unit, antenna, user manual, USB charger, and battery.
Figure 3: Retevis RA85 Package Contents. Includes the radio unit, antenna, user manual, USB charger, and battery.
- 1 x Two-Way Radio (RA685 or RA85 model)
- 1 x Antenna (Note: RA685 GMRS and RA685 EU antennas are not removable)
- 1 x Manuale utente
- 1 x Caricabatterie USB
- 1 x Battery (1800mAH Li-Ion)
Istruzioni di installazione
1. Installazione e ricarica della batteria
The radio comes with an 1800mAh Li-ion battery. Ensure the battery is fully charged before first use.
- Per installare la batteria, allineare il pacco batteria con le scanalature sul retro della radio e farlo scorrere verso l'alto finché non scatta in posizione.
- To remove, press the PUSH button above the battery and slide it downwards.
- Connect the USB Type-C charger to the charging port on the side of the radio.
- The radio supports multiple charging methods: Wall Charging, Car Charging, Power Bank, and PC Charging.
Video 1: Demonstrates battery installation, Type-C direct charging, and multiple charging methods for the Retevis RA685/RA85 radio. It also shows the detachable antenna and flashlight function.
Figure 4: Type-C USB Charging. The radio can be charged via various USB sources.
Figure 5: Charging options for the radio, including a charging base and direct USB-C connection.
Figure 6: Battery specifications, showing 1800mAh capacity, 14 hours working time, and 48 hours standby time at 5W.
2. Attacco dell'antenna
Screw the antenna clockwise into the antenna connector on top of the radio until it is firmly seated. Ensure a secure connection for optimal signal performance.
Figure 7: Detachable antenna connection point (SMA-F type for RA685).
Istruzioni per l'uso
1. Controlli di base e display
Familiarize yourself with the radio's layout:
Figure 8: Radio Components and Controls.
- Power/Volume Switch (6): Rotate clockwise to turn on and increase volume, counter-clockwise to decrease volume and turn off.
- PTT (Push-to-Talk) Button (9): Tenere premuto per trasmettere, rilasciare per ricevere.
- Screen Display (7): 1.6 Inch Dot Matrix Display shows frequency, channel, battery status, and other operational information.
- Programmable Side Keys (10, 11): These buttons can be customized for various functions like Flashlight (PF1 short press), Emergency Alarm (PF1 long press), or FM Radio (PF2).
Figure 9: The 1.6-inch dot matrix display provides detailed information.
2. Selezione del canale e della frequenza
- Modalità canale: Utilizzare i tasti freccia su/giù per navigare tra i canali preprogrammati.
- Modalità VFO (modalità frequenza): Allows manual input of frequencies. Press the V/M button to switch between Channel and VFO modes. Use the numeric keypad to enter desired frequencies.
Figure 10: Manually inputting frequencies in VFO mode.
3. Frequency Measurement and Copy
The radio can measure and copy frequencies and sub-audio tones (CTCSS/DCS) from other devices. For accurate measurement, ensure the distance between the transmitting and receiving radios is within 1 meter.
Figure 11: Frequency measurement and copy function. Maintain close proximity for best results.
4. Power Selection
Adjust the transmit power (5W/3W/1W for RA685, 5W/0.5W for RA85) based on your communication needs to optimize battery life and range.
Figure 12: Power selection options for RA685, balancing signal strength and power saving.
Figure 13: Power selection options for RA85, balancing signal strength and power saving.
5. Funzioni di emergenza
- One-click Alarm: For emergency situations, activate the alarm function (often assigned to a programmable side key).
Figure 14: The one-click alarm function is designed for emergencies.
6. Funzione VOX
The Voice Operated Exchange (VOX) function allows you to transmit by speaking into the microphone without pressing the PTT button. This is useful for hands-free operation.
Figure 15: VOX function enables hands-free communication.
7. Radio FM digitale
The radio includes a digital FM radio function (65-108MHz). Refer to the user manual for specific instructions on tuning and saving FM stations.
Figure 16: The radio features a built-in FM radio.
8. NOAA Weather Channels (RA85 GMRS Version Only)
The RA85 GMRS version can receive 10 NOAA weather channels, providing real-time weather forecasts. This feature is crucial for outdoor activities and emergency preparedness.
Figure 17: NOAA Weather Channels (GMRS version only) for up-to-date weather information.
Manutenzione
- Pulizia: Utilizzare un morbido, damp panno per pulire la superficie della radio. Non utilizzare prodotti chimici aggressivi o detergenti abrasivi.
- Cura della batteria:
- Evitare di sovraccaricare o scaricare completamente la batteria.
- Conservare la batteria in un luogo fresco e asciutto quando non viene utilizzata per lunghi periodi.
- If the battery is not used for a long time, charge it once a month to maintain battery life.
- Magazzinaggio: Conservare la radio in un ambiente asciutto e privo di polvere, lontano da temperature estreme.
- Antenna: Ensure the antenna is securely attached. Do not bend or force the antenna, as this can damage the radio.
Risoluzione dei problemi
| Problema | Possibile causa | Soluzione |
|---|---|---|
| La radio non si accende. | La batteria è scarica o non è installata correttamente. | Caricare la batteria o reinstallarla correttamente. |
| Impossibile trasmettere o ricevere. | Frequenza/canale errati, antenna allentata o fuori portata. | Verify frequency/channel settings. Check antenna connection. Move closer to the other radio or use a repeater. |
| Qualità audio scadente. | Low battery, incorrect squelch level, or interference. | Charge battery. Adjust squelch level. Move away from sources of interference. |
| La durata della batteria è breve. | High transmit power, frequent use, or aging battery. | Reduce transmit power. Limit continuous transmission. Consider replacing the battery if it's old. |
Specifiche
Figura 18: Specifiche tecniche dettagliate.
| Categoria | Parametro | RA685 | RA85 |
|---|---|---|---|
| Generale | Gamma di frequenza | 144-146MHz (RX/TX), 430-440MHz (RX/TX) | GMRS |
| Canale n. | 128 canale | 60 canale | |
| Spaziatura dei canali | Frequenza 25/12.5 kHz | 12.5 kHz | |
| Ingresso volumetage | 7.4 VCC | ||
| Batteria (configurazione standard) | 1800mAH (Li-Ion) | ||
| Battery Life (5-5-90, High power transmission) | Circa 14 ore | ||
| Temperatura di esercizio | da -20℃ a +60℃ | ||
| Walkie-talkie size (With battery, but without antenna) | Dimensioni: 121×61×33 mm | ||
| Trasmettitore | Trasmettere la potenza di uscita | 5W / 3W / 1W | 5W / 0.5W |
| Modulazione | 16K0F3E@25KHz, 11K0F3E@12.5KHz | 16K0F3E@25KHz, 11K0F3E@12.5KHz | |
| Emissione spuria | -36dBm < 1GHz, -30dBm > 1GHz | ||
| Rapporto segnale/rumore FM | 45dB@25KHz, 40dB @ 12.5KHz | ||
| Distorsione audio | ≤5% | ||
| Ricevitore | Sensibilità di ricezione | 0.25μV (SINAD 12dB) | |
| Selettività del canale adiacente | ≥60dB@25KHz, ≥55dB@12.5KHz | ||
| Immunità all'intermodulazione | ≥60dB@25KHz, ≥55dB@12.5KHz | ||
| Emissioni spurie condotte | ≤-57dB@25KHz, ≤-57dB@12.5KHz | ||
| Potenza di uscita audio | 1 W su 16 ohm | ||
Garanzia e supporto
RETEVIS provides comprehensive support for its products. For warranty information, technical assistance, or service, please refer to the following:
- Resi gratuiti: Entro 90 giorni dall'acquisto.
- Garanzia di consegna rapida: Ricevi un buono da 1.00 $ per la consegna in ritardo. Rimborso in caso di pacco smarrito o articoli danneggiati. Rimborso in caso di mancata consegna entro 60 giorni.
- Sicurezza e privacy: I tuoi dati personali sono protetti e non vengono condivisi con terze parti senza il tuo consenso.
- Software & Support: Drivers and firmware updates may be available on the official RETEVIS websito.
Figure 19: Software and Support options.
For further assistance, please contact RETEVIS customer service or visit their official websito.
