Alinco DR-735D Dual Band UHF/VHF Mobile Transceiver User Manual

1. හැඳින්වීම

The Alinco DR-735D is a dual-band mobile transceiver designed for reliable communication across VHF and UHF frequencies. It features a full-duplex system for simultaneous operation on VHF/UHF, and semi-duplex operation on UHF/UHF, including AM reception for the VHF airband. This manual provides essential information for the proper setup, operation, and maintenance of your transceiver.

ප්රධාන ලක්ෂණ:

• Full duplex operation for simultaneous VHF/UHF communication.
• Up to 50W output power on both VHF and UHF bands.
• Dual band display with independent volume and squelch controls.
• Selectable LCD display color with 8 backlight options, including white.
• Detachable control panel for flexible installation.
• Alinco EMS-78 microphone with dual PTTs and programmable sub-PTT.
• Two microphone connectors (one on main unit, one on control panel).
• CTCSS and DCS tone encoding/decoding included.
• Frequency steps: 5, 6.25, 8.33, 10, 12.5, 15, 20, 25, 30, 50, and 100kHz.
• 1000 memory channels plus 100 dual channels.
• Two external speaker outputs for separate left/right audio.

2. පැකේජ අන්තර්ගතය

Verify that all items listed below are present in your package. If any items are missing or damaged, please contact your dealer.

• Alinco DR-735D UHF/VHF Mobile Transceiver
• Microphone (Alinco EMS-78)
• DC බල කේබලය
• සවිකරන වරහන
• පරිශීලක අත්පොත (මෙම ලේඛනය)

3. පිහිටුවීම සහ ස්ථාපනය

Proper installation is crucial for optimal performance and safety. Ensure the transceiver is installed in a well-ventilated area, away from direct sunlight and excessive heat.

3.1 සම්ප්‍රේෂකය සවි කිරීම

Use the provided mounting bracket to secure the main unit. The control panel can be attached directly to the main unit or separated for remote mounting using an optional separation cable (not included).

3.2 බල සම්බන්ධතාවය

Connect the supplied DC power cable to a 13.8V DC power source. Ensure correct polarity: red to positive (+), black to negative (-). Incorrect polarity can damage the unit. The power source should be capable of supplying sufficient current (e.g., 15A or more) for 50W transmission.

3.3 ඇන්ටෙනා සම්බන්ධතාවය

Connect a 50 Ohm dual-band antenna to the antenna connector on the rear of the transceiver. Use a high-quality coaxial cable with appropriate connectors. A poorly matched antenna can result in reduced performance and potential damage to the transceiver's final ampජීවිතාරක්ෂකයා.

3.4 මයික්රොෆෝන සම්බන්ධතාවය

Plug the EMS-78 microphone into either the main unit's microphone jack or the control panel's microphone jack.

Image: Alinco DR-735D Mobile Transceiver. This image shows the compact design of the transceiver, highlighting its main unit and the detachable control panel, along with the connected microphone. The display is visible, indicating its dual-band capability.

4. මෙහෙයුම් උපදෙස්

This section covers the basic operation of the Alinco DR-735D. Refer to the full user manual for detailed instructions on advanced features.

4.1 බලය සක්රිය / අක්රිය

Press and hold the power button (usually located on the control panel) to turn the transceiver on or off.

4.2 සංඛ්යාත තේරීම

Use the main tuning knob to change frequencies. The DR-735D features dual VFOs (Variable Frequency Oscillators) allowing independent frequency selection for each band displayed.

4.3 පරිමාව සහ ස්කෙල්ච් ගැලපීම

Each band has independent volume and squelch controls. Adjust the volume knob for desired audio level. Adjust the squelch knob to suppress background noise when no signal is present. Turn the squelch clockwise until the background noise disappears.

4.4 සම්ප්‍රේෂණය

To transmit, select the desired frequency and press the PTT (Push-To-Talk) button on the microphone. Speak clearly into the microphone. Release the PTT button to receive. The EMS-78 microphone includes two PTT buttons for main and sub-band transmission.

4.5 LCD Display Color

The LCD display color can be customized. Access the menu settings to select from 8 available backlight colors. You can set different colors for transmit (TX), receive (RX), standby, and for the main and sub-bands.

5. නඩත්තු කිරීම

Regular maintenance ensures the longevity and optimal performance of your Alinco DR-735D.

5.1 පිරිසිදු කිරීම

මෘදු, වියළි රෙද්දකින් සම්ප්‍රේෂකයේ බාහිර කොටස පිස දමන්න. මුරණ්ඩු අපිරිසිදුකම සඳහා, සැහැල්ලුවෙන් රෙද්දක් භාවිතා කරන්න dampened with water. Do not use harsh chemicals, solvents, or abrasive cleaners, as these can damage the casing සහ සංදර්ශකය.

5.2 සම්බන්ධතා

Periodically check all cable connections (power, antenna, microphone) to ensure they are secure and free from corrosion or damage.

5.3 ස්ථිරාංග යාවත්කාලීන කිරීම්

Check the official Alinco website for any available firmware updates. Follow the instructions provided with the update carefully to avoid damaging the unit.

6. දෝශ නිරාකරණය

If you encounter issues with your DR-735D, refer to the following common problems and solutions before seeking professional service.

• බලය නැත:
  Check the power cable connection. Ensure the power supply is providing 13.8V DC and is capable of delivering sufficient current. Check the fuse in the power cable.
• No Audio / Weak Audio:
  Check the volume level. Ensure the squelch is not set too high. Verify external speaker connections if used.
• සම්ප්‍රේෂණය කළ නොහැක:
  Ensure the microphone is properly connected. Check if the PTT button is functioning. Verify the antenna connection and SWR. Ensure the frequency is within the allowed transmit range.
• දුර්වල පිළිගැනීම:
  Check antenna connection and condition. Ensure squelch is not set too high. Verify frequency and mode settings. Check for local interference sources.
• සංදර්ශක ගැටළු:
  If the display is blank or erratic, try cycling the power. If the issue persists, a factory reset (refer to the full manual) may be necessary.

If these steps do not resolve the issue, contact your authorized Alinco dealer or service center.

7. පිරිවිතර

8. වගකීම් සහ සහාය

Alinco products are manufactured to high-quality standards. For warranty information, please refer to the warranty card included with your product or contact your authorized Alinco dealer. Technical support can be obtained through your dealer or by visiting the official Alinco website for service contact details.