HanRongDa HRD-747 Wide Frequency Receiver User Manual

1. Танилцуулга

The HanRongDa HRD-747 is a compact and versatile wide-frequency receiver designed for optimal radio reception across various bands. Utilizing modern DSP digital demodulation technology, it offers enhanced sensitivity, selectivity, and anti-mirror interference capabilities. This manual provides detailed guidance on the features, setup, operation, and maintenance of your HRD-747 radio.

Key capabilities include reception of:

• FM (давтамжийн модуляц)
• MW (Medium Wave)
• SW (Shortwave) including SSB (Upper Sideband) and LSB (Lower Sideband)
• AIR (Aircraft Band)
• CB (City Band)
• VHF (Very High Frequency Band)
• UHF (Ultra High Frequency Band)
• UBD (User-Defined Band)
• WX (North American National Weather Band)

Зураг 1: Урд view of the HRD-747 Wide Frequency Scanner Radio.

2. Онцлогууд дууссанview

The HRD-747 is equipped with a range of features designed for enhanced usability and performance:

• DSP Digital Demodulation: Improves receiving sensitivity, selectivity, and anti-mirror interference across all bands.
• Өргөн давтамжийн хамрах хүрээ: Comprehensive reception from FM to UHF, including SSB and NOAA Weather Band.
• Multiple Station Selection Methods: Includes Automatic Search Storage (ATS), Manual Search Pre-stored (VM), and Manual Search (VF).
• Санах ойн сан: Stores up to 1000 radio frequencies with manual deletion support.
• Тохируулах тохиргоо: Features like adjustable antenna input attenuation (ATT), various bandwidth circuits (BW), 9-level squelch (SQ), and de-emphasis selection (DE) in FM mode.
• Температурын дэлгэц: Shows temperature in Celsius or Fahrenheit.
• Sleep and Boot Timers: Configurable automatic sleep and boot times.
• Арын арын дэлгэц Warm orange backlight for night use, activating for 10 seconds with any button press.
• Холболт: 3.5mm external antenna input, 3.5mm headphone output, and USB Type-C charging jack.
• Зөөврийн дизайн: Compact size with a product clip for easy carrying.
• Цэнэглэдэг батерей: Uses a removable BL5C 1000mAh lithium battery for extended use.

Figure 2: The HRD-747 features an orange backlight for improved visibility in low-light conditions.

Зураг 3: Нарийвчилсан views of the radio's components including the speaker, Type-C charging port, and audio jack.

3. Хайрцагт юу байна

Upon unboxing your HanRongDa HRD-747, please ensure all the following items are present:

• 1 x HRD-747 SSB Shortwave Radio
• 1 x BL-5C Lithium Battery
• 1 х USB-C цэнэглэх кабель
• 1 x 3.5mm External Antenna
• 1 x оосортой оосор
• 1 x Waterproof Pouch
• 1 x In-ear Headphone
• 1 x Хэрэглэгчийн гарын авлага (энэ баримт бичиг)

4. Тохируулах гарын авлага

4.1. Зай суурилуулах

1. Радиогийн арын хэсэгт зайны тасалгааны тагийг олоорой.
2. Тагийг нь нээнэ үү.
3. Insert the provided BL-5C lithium battery, ensuring the contacts align correctly.
4. Зайны тасалгааны тагийг сайтар хаа.

Figure 4: Installing the BL5C lithium battery into the HRD-747.

4.2. Батерейг цэнэглэж байна

Анх ашиглахаасаа өмнө радиогийн батерейг бүрэн цэнэглэ.

1. Connect the supplied USB-C charging cable to the USB Type-C port on the side of the radio.
2. Кабелийн нөгөө үзүүрийг стандарт USB цахилгаан адаптер (багцад ороогүй болно) эсвэл компьютерийн USB порт руу холбоно уу.
3. The charging indicator on the display will show charging status. A full charge typically takes a few hours.

4.3. Антенны холболт

For optimal reception, especially on SW, AIR, and other bands, extend the telescopic antenna or connect the external antenna.

1. Телескоп антен: Gently pull the telescopic antenna upwards until fully extended. For best reception, orient the antenna vertically.
2. Гадаад антен: For enhanced reception, plug the 3.5mm external wire antenna into the 3.5mm antenna input jack on the radio.

Figure 5: Extending the telescopic antenna for broadcast reception.

5. Ашиглалтын заавар

5.1. Асаах/унтраах

• -г удаан дар ХҮЧ button located on the top right of the radio to turn it on or off.

5.2. Хамтлаг сонгох

• дээр дарна уу БАНД button to cycle through available frequency bands (FM, MW, SW, AIR, CB, VHF, UHF, UBD, WX).

5.3. Tuning and Frequency Adjustment

• Shuttle Tuning Knob: -г ашиглана уу ТААРУУЛАХ knob on the right side of the radio to adjust the frequency. Rotate it clockwise to increase frequency and counter-clockwise to decrease. The shuttle stepping can be adjusted for faster tuning.
• STEP Button: дээр дарна уу АЛХАМ button to change the tuning step value for the current band. This allows for fine or coarse tuning.
• Дээш/Доош сум: Use the up and down arrow buttons below the TUNE knob for incremental frequency adjustments.

Figure 6: The shuttle pulley (tuning knob) allows for precise frequency selection.

5.4. Mode Selection (SSB/LSB)

• When in Shortwave (SW) band, press the MODE button to switch between AM, SSB (Upper Sideband), and LSB (Lower Sideband).
• For SSB/LSB reception, fine-tuning with the TUNE knob is crucial to clarify voice signals.

5.5. Memory Functions (MEMO)

The radio can store up to 1000 radio frequencies.

• Станцыг хадгалах: Tune to the desired frequency. Press and hold the Санамж button until the display indicates the station is saved.
• Станцыг эргэн санах нь: товчийг дарна уу Санамж button, then use the TUNE knob or arrow buttons to navigate through stored frequencies.
• Станцыг устгах: Select the stored station you wish to delete. Press and hold the ДЭЛ button until the display confirms deletion.

5.6. Automatic Search Storage (ATS)

• To automatically scan and store available stations in the current band, press and hold the БАНД button. The radio will scan and save strong signals.

5.7. Дууны түвшний хяналт

• -г ашиглана уу VOL+ болон VOL- buttons to adjust the audio output volume.

5.8. Advanced Settings (SET Menu)

дээр дарна уу SET button to access advanced settings. Use the TUNE knob or arrow buttons to navigate and the SET button again to confirm selections.

• ATT (Attenuation): Adjusts antenna input attenuation to prevent signal overload, especially with external antennas.
• BW (Bandwidth): Selects various bandwidths for improved signal clarity and interference reduction.
• SQ (Squelch): Adjusts the 9-level squelch to mute weak signals and background noise.
• DE (De-emphasis): Selects de-emphasis settings in FM band mode.
• Country/Region Settings: Adjusts FM and AM band frequencies for different regions.
• Алхам: Allows adjustment of step values for each wave band.
• Температурын нэгж: Switch between Celsius and Fahrenheit display.

5.9. Түгжих функц

• дээр дарна уу TOCK button to lock all buttons and prevent accidental changes. Press again to unlock.

5.10. Sleep Timer and Auto Boot

• These functions can be configured within the SET menu to automatically turn the radio off after a set period or turn it on at a specific time.

6. Засвар үйлчилгээ

6.1. Цэвэрлэгээ

• Радиог зөөлөн, хуурай даавуугаар арчина. Зүлгүүрийн цэвэрлэгч, уусгагчийг бүү ашигла.
• Avoid exposing the radio to excessive dust or moisture.

6.2. Зайны арчилгаа

• If the radio will not be used for an extended period, remove the BL-5C battery to prevent leakage.
• Батерейг ашиглахгүй байсан ч гэсэн ашиглалтын хугацааг нь хадгалахын тулд тогтмол цэнэглээрэй.

6.3. Хадгалах

• Радиог нарны шууд тусгал, хэт температураас хол, сэрүүн, хуурай газар хадгална.
• Use the provided waterproof pouch for protection during travel or storage.

Figure 7: The HRD-747 features a convenient clip for portability.

7. Алдаа засах

8. Техникийн үзүүлэлтүүд

9. Баталгаат хугацаа ба дэмжлэг

For warranty information and technical support, please refer to the warranty card included with your product or contact HanRongDa customer service directly. Contact details are typically provided on the product packaging or the official HanRongDa webсайт.

Худалдан авалтын баримтаа баталгаат нэхэмжлэлийн шаардлагад нийцүүлэн хадгална уу.