Jalzdieod Mini SAF775X Radio SDR Receiver User Manual

Introduction

Welcome to the user manual for your new Jalzdieod Mini SAF775X Radio SDR Receiver. This device is a high-quality digital radio featuring the SAF7751 chip, designed for comprehensive reception across long-wave, medium-wave, short-wave, and FM bands. Its compact size and durable metal shell make it suitable for both indoor and outdoor use, powered conveniently via a Type-C input. This manual provides essential information for setting up, operating, and maintaining your radio receiver to ensure optimal performance and longevity.

Product Overview

Key Features

• Multi-Band Reception: Supports FM (87MH-108MH), FL (76MH-86.9MH), MW (520KH-1710KH), LW (153KH-279KH), and SW (2300KH -26100kH).
• Advanced Chipset: Utilizes the SAF7751 chip for high-quality digital radio performance.
• Dual Antenna Differential Reception: Enhances signal stability and reception quality.
• Durable Construction: All-metal shell provides superior heat dissipation, reduces clutter, and offers strong anti-interference capabilities.
• Portable Design: Small and compact, can be powered by a power bank for outdoor use.
• Versatile Audio Output: Features 3.5mm headphone analog audio output and coaxial digital audio output.
• Adjustable Backlight: Brightness and duration of the LCD backlight are customizable.
• Station Memory: Supports manual station saving and power-off memory settings.
• SDR Receiver Capability: Can be connected to an external decoder for HIFI-level listening.

Components and Controls

Familiarize yourself with the various components and controls of your SAF775X Radio Receiver:

Front panel of the SAF775X Radio Receiver, highlighting the Frequency knob, Volume knob, Power switch, and control buttons: TUNE (tuning mode), STUP (stepping mode), BANT (band selection), and FILTER.

Rear panel of the SAF775X Radio Receiver, showing the Main FM/AM, LW, MW & SW antenna input, Sub-FM input, Coaxial RCA digital audio output, 3.5mm analog audio output (PHONE), 5V Type-C socket (DC5V), and heat emission holes.

General front view of the SAF775X Radio Receiver.

Setup

Unpacking

Carefully remove the radio receiver and its accessories from the packaging. Verify that all components listed in the package contents (Radio Receiver, Type-C Charging Cable) are present.

Power Connection

Connect the provided Type-C charging cable to the DC 5V port on the rear of the radio receiver. Plug the other end into a compatible 5V DC power source, such as a mobile phone charger or a power bank. The unit is designed to be compatible with standard mobile phone chargers.

Antenna Connection

For optimal reception, connect the appropriate antenna to the corresponding input on the rear panel. Use the FM1/AM input for main FM, LW, MW, and SW bands, and the FM2 input for sub-FM signals. Ensure connections are secure.

Audio Output Connection

To listen to audio, connect headphones to the 3.5mm PHONE jack for analog audio output. Alternatively, for digital audio, connect a coaxial cable to the COAXIAL RCA digital audio output port and connect it to a compatible audio system or decoder.

Operating Instructions

Powering On/Off

Locate the POWER switch on the front panel. Slide the switch to the 'On' position to power on the device. Slide it to the 'Off' position to power off.

Tuning and Frequency Selection

Use the large 'FREQ' knob on the left side of the front panel to adjust the frequency. The 'TUNE' button allows you to switch tuning modes, and the 'STUP' button adjusts the stepping mode for fine-tuning.

Band Selection

Press the 'BANT' button to cycle through the available frequency bands: FM, FL, MW, LW, and SW. The selected band will be displayed on the LCD screen.

Volume Control

Adjust the audio output level using the 'VOL' knob on the right side of the front panel. Rotate clockwise to increase volume and counter-clockwise to decrease it.

Backlight Adjustment

The LCD screen's backlight brightness is adjustable. Consult the on-screen menu or specific button combinations (if available, not detailed in product description) to modify brightness levels and set the backlight duration. The backlight can also be turned off completely.

Automatic Station Search and Saving

The radio supports automatic station search. You can set the threshold and speed for this function. Stations can also be saved manually to memory for quick access.

Power-off Memory

The device retains your settings and saved stations even after being powered off, ensuring a consistent user experience upon restart.

Maintenance

Cleaning

To clean the radio receiver, gently wipe the exterior with a soft, dry cloth. Do not use liquid cleaners, aerosols, or abrasive materials, as these can damage the finish or internal components.

Storage

When not in use for extended periods, store the radio receiver in a cool, dry place, away from direct sunlight and extreme temperatures.

Heat Management

The SAF7751 chip has high power consumption, and the unit may generate a significant amount of heat during operation (current can reach 700-800mA). To prevent overheating and ensure proper function, always use the radio at room temperature and keep it away from other heat sources. Ensure the heat emission holes on the rear panel are not obstructed.

Water Resistance

This radio receiver is NOT waterproof. To prevent short circuits and damage, keep the unit away from water, moisture, and high humidity. Do not expose it to rain or splashes.

Troubleshooting

Specifications

• Model: 1
• Brand: Jalzdieod
• Main Control Chip: 32-bit MCU for ARM architecture
• Receiver Chip: SAF7751 for NXP
• Input Voltage: DC 5V (Type-C interface)
• Display Screen: LCD1602 MINI
• Display Area: 36 x 10mm / 1.4 x 0.4inch
• Dimensions: 120 x 88 x 38mm / 4.7 x 3.5 x 1.5inch
• Material: Metal (Shell: aluminum alloy; Front panel: copper clad PCB)
• Main Receiving Frequencies:
  • FM: 87MHz - 108MHz
  • FL: 76MHz - 86.9MHz
  • MW: 520KHz - 1710KHz
  • LW: 153KHz - 279KHz
  • SW: 2300KHz - 26100KHz
• Audio Output: 3.5mm headphone analog audio output, Coaxial digital audio output
• Power Consumption: Can reach 700-800mA during operation

Dimensions and material details of the SAF775X Radio Receiver.

Warranty and Support

For warranty information or technical support regarding your Jalzdieod Mini SAF775X Radio SDR Receiver, please refer to the product packaging or contact Jalzdieod customer service directly. Keep your purchase receipt as proof of purchase for any warranty claims.

For further assistance, including frequently asked questions or additional resources, please visit the official Jalzdieod website or contact their dedicated support team through the channels provided with your product.