1. Introducció
The YAESU FT-1907R is a high-performance UHF FM mobile transceiver designed for reliable communication in various environments, including vehicles. It features a compact and durable design, making it suitable for outdoor sports, travel, and driving applications. This manual provides essential information for the proper installation, operation, and maintenance of your FT-1907R radio.
2. Contingut del paquet
Please check the package carefully to ensure all items are present and undamaged. If any items are missing or damaged, contact your dealer immediately.
- FT-1907R Transceiver
- DTMF Microphone MH-48A6J
- DC Power Cord with Fuse
- Fuse (32V/15A)
- Clip de micròfon
- Mobile Mounting Bracket MMB-36
- Jocs de cargols
- Manual de funcionament (aquest document)
3. Configuració i instal·lació
Proper installation is crucial for optimal performance and safety. Ensure the vehicle's electrical system can support the radio's power requirements.
3.1 Mounting the Transceiver
Use the provided Mobile Mounting Bracket (MMB-36) and screw sets to securely install the transceiver in your vehicle. Choose a location that allows for easy access to controls, good ventilation, and does not obstruct driving visibility or airbag deployment. The bracket can be adjusted for optimal viewangle de ing.
3.2 Connexió d'alimentació
Connect the supplied DC Power Cord to the power input jack on the rear of the transceiver. The red wire connects to the positive (+) terminal of your vehicle's 13.8 VDC battery, and the black wire connects to the negative (-) terminal. Ensure the fuse (32V/15A) is properly installed in the power cord. Avoid connecting to the cigarette lighter socket as it may not provide sufficient current for 55W transmission.
3.3 Connexió de l'antena
Connect a suitable UHF antenna (not included) to the M-type antenna interface on the rear of the transceiver. Ensure the antenna is properly tuned for the 400-470MHz frequency range to prevent damage to the radio and ensure efficient operation.
3.4 Connexió del micròfon
Plug the DTMF Microphone MH-48A6J into the microphone jack on the front panel of the transceiver. Secure the microphone using the provided microphone clip in a convenient location within the vehicle.
4. Instruccions de funcionament
This section covers the basic operation of your FT-1907R mobile radio.
4.1 Encès/Apagat
Press the red power button (labeled with a circle and vertical line) on the front panel to turn the radio ON or OFF.
4.2 Ajust de volum
Rotate the VOL knob (typically the leftmost knob) clockwise to increase the audio output volume from the built-in speaker, and counter-clockwise to decrease it.
4.3 Selecció de freqüència i canal
The FT-1907R supports both VFO (Variable Frequency Oscillator) mode for direct frequency input and Memory mode for stored channels.
- Mode VFO: Use the main DIAL knob (rightmost knob) to adjust the operating frequency. The step size can often be changed using the MHZ button or menu settings.
- Mode de memòria: Press the MW D/MR button to switch to Memory Recall mode. Rotate the DIAL knob to select from the 200 conventional storage channels or 8-channel distribution repositories.
- Direct Frequency Entry (DTMF Microphone): Use the keypad on the DTMF Microphone MH-48A6J to directly enter frequencies.
4.4 Transmissió i recepció
To transmit, press and hold the PTT (Push-To-Talk) button on the side of the DTMF microphone. Speak clearly into the microphone. Release the PTT button to return to receive mode. The radio operates in FM mode within the 400-470MHz frequency range with selectable transmission power (55W, 25W, 10W, 5W).
4.5 Keypad Functions (DTMF Microphone MH-48A6J)
The MH-48A6J microphone provides additional control over the transceiver:
- Teclat numèric: Used for direct frequency entry and DTMF tone generation.
- Function Buttons (P1, P2, P3, P4): These are programmable buttons that can be assigned various functions via the radio's menu.
- Botons A/B/C/D: Often used for quick access to specific functions or memory banks.
- LAMP Botó: Controls the backlight of the microphone keypad.
- Botó BLOC: Locks the microphone keypad to prevent accidental input.
5. Manteniment i cura
To ensure long-lasting performance and reliability of your FT-1907R, follow these maintenance guidelines:
- Neteja: Use a soft, dry cloth to clean the exterior of the transceiver. For stubborn dirt, a slightly damp cloth with mild soap can be used, followed by a dry cloth. Avoid using abrasive cleaners or solvents.
- Connexions: Comproveu periòdicament totes les connexions dels cables (alimentació, antena, micròfon) per assegurar-vos que estiguin ben fixades i que no presentin corrosió.
- Ventilació: Ensure the radio's ventilation openings are clear of obstructions to prevent overheating, especially during prolonged high-power transmissions.
- Protecció del medi ambient: Protect the radio from extreme temperatures, direct sunlight, dust, and moisture.
6. Solució De Problemes
If you experience issues with your FT-1907R, refer to the table below for common problems and their solutions before seeking professional service.
| Problema | Causa possible | Solució |
|---|---|---|
| Sense poder | Power cable disconnected; Blown fuse; Vehicle battery low. | Check power cable connection; Replace fuse (use correct rating); Charge/check vehicle battery. |
| Sense recepció o mala recepció | Antenna disconnected or damaged; Incorrect frequency/channel; Squelch level too high. | Check antenna connection and condition; Verify frequency/channel settings; Adjust squelch level. |
| No es pot transmetre | Microphone not connected; PTT button faulty; Antenna issue. | Ensure microphone is securely connected; Test PTT button; Check antenna connection and SWR. |
| Mala qualitat d'àudio | Volume too low/high; Speaker obstructed; Microphone issue. | Adjust volume; Clear speaker grille; Test with another microphone if available. |
7. Especificacions
Technical specifications for the YAESU FT-1907R Mobile Radio:
| Característica | Especificació |
|---|---|
| Frequency Range (Tx/Rx) | 400 - 470 MHz |
| Recompte de canals | 200 Conventional Storage Channels, 8-channel Distribution Repository |
| Potència de transmissió | 55W / 25W / 10W / 5W (selectable) |
| Mode d'operació | FM |
| Potència de sortida d'àudio | 3W (built-in speaker) |
| Dimensions (AxAxP) | 140 x 40 x 146 mm (Knob not included) |
| Interfície d'antena | M-type |
| Potència Voltage | 13.8 VDC (±15%) |
| Pes | Aproximadament 1.2 kg |
8. Consells d'usuari
- Always ensure your antenna is properly connected and tuned before transmitting to prevent damage to the radio's final ampmés viu.
- For optimal voice clarity, speak at a normal volume into the microphone, holding it a few inches from your mouth.
- Regularly check the power connections for tightness, especially in a mobile environment where vibrations can loosen them.
- Familiarize yourself with the programmable function buttons on the microphone (P1-P4) to customize your radio's quick access features.
9. Garantia i Suport
This product comes with a 90-day warranty from the date of purchase. For technical support, service, or warranty claims, please contact your authorized dealer or the manufacturer's customer service. Keep your purchase receipt as proof of purchase.





