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Home page Home page Hobbies & Garden Tools Soldering Irons & Accessories FM Radio Kit for Soldering SYJ-1 RDA5807M and PAM8403 Chips 87–108 MHz Four-Digit LED Display Black PCB 94.5 x 70.8 mm Soldering Education
FM Radio Kit for Soldering SYJ-1 RDA5807M and PAM8403 Chips 87–108 MHz Four-Digit LED Display Black PCB 94.5 x 70.8 mm Soldering Education
FM Radio Kit for Soldering SYJ-1 RDA5807M and PAM8403 Chips 87–108 MHz Four-Digit LED Display Black PCB 94.5 x 70.8 mm Soldering Education 1
FM Radio Kit for Soldering SYJ-1 RDA5807M and PAM8403 Chips 87–108 MHz Four-Digit LED Display Black PCB 94.5 x 70.8 mm Soldering Education 1
FM Radio Kit for Soldering SYJ-1 RDA5807M and PAM8403 Chips 87–108 MHz Four-Digit LED Display Black PCB 94.5 x 70.8 mm Soldering Education 2
FM Radio Kit for Soldering SYJ-1 RDA5807M and PAM8403 Chips 87–108 MHz Four-Digit LED Display Black PCB 94.5 x 70.8 mm Soldering Education 3
FM Radio Kit for Soldering SYJ-1 RDA5807M and PAM8403 Chips 87–108 MHz Four-Digit LED Display Black PCB 94.5 x 70.8 mm Soldering Education 4
FM Radio Kit for Soldering SYJ-1 RDA5807M and PAM8403 Chips 87–108 MHz Four-Digit LED Display Black PCB 94.5 x 70.8 mm Soldering Education 5
FM Radio Kit for Soldering SYJ-1 RDA5807M and PAM8403 Chips 87–108 MHz Four-Digit LED Display Black PCB 94.5 x 70.8 mm Soldering Education 6
FM Radio Kit for Soldering SYJ-1 RDA5807M and PAM8403 Chips 87–108 MHz Four-Digit LED Display Black PCB 94.5 x 70.8 mm Soldering Education 7
FM Radio Kit for Soldering SYJ-1 RDA5807M and PAM8403 Chips 87–108 MHz Four-Digit LED Display Black PCB 94.5 x 70.8 mm Soldering Education 8

FM Radio Kit for Soldering SYJ-1 RDA5807M and PAM8403 Chips 87–108 MHz Four-Digit LED Display Black PCB 94.5 x 70.8 mm Soldering Education

Assemble your own FM receiver with automatic station scanning. The main chips are pre-soldered, and you will solder the other components yourself. Powered by 5 V. Full description
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€34.45
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Overview
FM Radio Kit for Soldering SYJ-1 RDA5807M and PAM8403 Chips 87–108 MHz Four-Digit LED Display Black PCB 94.5 x 70.8 mm Soldering Education

The SYJ-1 FM radio kit is a practical electronic project for anyone who wants to learn to solder or refresh their electronics basics. Once assembled, it becomes a functional radio that receives FM broadcasts in the 87–108 MHz range and automatically scans for stations. The heart of the receiver is the radio chip RDA5807M, which works in conjunction with the microcontroller STM8S003F3P6 and a 32.768 kHz crystal. These three components are pre-soldered onto the PCB from the factory, as soldering them is challenging. You will install and solder the other components yourself, allowing you to practice working with resistors, capacitors, buttons, connectors, and the display.

The integrated amplifier PAM8403 sends sound to the speaker and is characterised by simple wiring, good sound quality, and a wide operating voltage range. The radio is controlled by four buttons: FRE+ and FRE- initiate automatic scanning for stations up and down, while VOL+ and VOL- increase and decrease the volume. On the front of the board, there is a four-digit LED display, a power switch, and a power indicator. The receiver offers noise suppression, a soft mute function, bass enhancement, high sensitivity, and good resistance to interference. The black PCB with a transparent acrylic back panel forms a compact tabletop radio with a telescopic antenna once assembled.

  • Model – SYJ-1
  • Type – FM radio kit for soldering without a front cover
  • Frequency Range – 87–108 MHz
  • Radio Chip – RDA5807M, pre-soldered on the board
  • Control Chip – STM8S003F3P6, pre-soldered on the board
  • Amplifier – PAM8403
  • Display – four-digit LED
  • Control – buttons FRE+ and FRE- for station scanning and VOL+ and VOL- for volume
  • Power Supply – DC 5 V via DC connector or USB-C
  • Current Consumption – at maximum volume, it may peak above 500 mA
  • Board Dimensions – 94.5 x 70.8 mm
  • Package Contents – black PCB with pre-soldered chips, transparent acrylic back panel, four-digit LED display, speaker, telescopic antenna, 2 integrated circuits, 7 electrolytic and 11 ceramic capacitors, 3 resistors, LED, voltage regulator, 4 buttons, power switch, DC connector, USB-C connector, 6 brass standoffs, 6 screws, and a USB power cable with a DC connector

The number of stations the radio can tune into depends on the signal strength in the vicinity. Other electronic devices may interfere with reception, so use the radio at a sufficient distance from them. If the power supply does not provide enough current, the radio may restart at high volume, so it is advisable to use a quality 5 V adapter. After screwing in the antenna, we recommend securing it with solder and using a foam pad to secure the speaker to ensure everything holds firmly.

This soldering kit is suitable for electronics clubs, school education, and self-learners who want to build their own device instead of using a finished product. The most challenging components are pre-soldered, allowing you to focus on assembling the common parts. The finished radio with a LED display serves as a simple receiver for favourite stations on your work desk. Power can be supplied via a USB cable or a USB-C connector, so a 5 V adapter with sufficient current is all that is needed. The kit also makes a great gift for budding electronics enthusiasts.

Price incl. VAT €34.45