• Micro-Power Medium Wave Transmitter Board Assembled For Testing Crystal Radio Domestic Use
  • Micro-Power Medium Wave Transmitter Board Assembled For Testing Crystal Radio Domestic Use
  • Micro-Power Medium Wave Transmitter Board Assembled For Testing Crystal Radio Domestic Use
  • Micro-Power Medium Wave Transmitter Board Assembled For Testing Crystal Radio Domestic Use
  • Micro-Power Medium Wave Transmitter Board Assembled For Testing Crystal Radio Domestic Use
  • Micro-Power Medium Wave Transmitter Board Assembled For Testing Crystal Radio Domestic Use
  • Micro-Power Medium Wave Transmitter Board Assembled For Testing Crystal Radio Domestic Use

Micro-Power Medium Wave Transmitter Board Assembled For Testing Crystal Radio Domestic Use

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Micro-Power Medium Wave Transmitter Board Assembled For Testing Crystal Radio Domestic Use

Video For Radio Sound Performance:

http://v.youku.com/v_show/id_XNDQxNDk1NTEzMg==.html

Electrical Parameters:
- Power Supply: 9V2A DC, 5.5 interface, internal positive and external negative (power supply is not included)
- Transmitting Frequency: 530 ~ 1600KHZ (radio medium-wave band)
- High-Frequency Transmitting Power: About 500 mW for uses within 5 to 10 meters.
- Antenna: 5M 1.5 ~ 2.5 copper wire for home uses  
- Audio Input: 3.5mm at both ends
- Audio Source: CD, desktop computer, mobile phone, etc.
- Application: Medium wave radio enthusiasts, for students to study the principle of wireless signal generation and modulation


1: Power Supply (9V. Internal positive & external negative)
2: Audio Input
3: Volume Adjustment
4: Adjust Frequency
5: Adjust Modulation Frequency
6: Antenna Terminal (5M cable for home radio)


Audio amplifier circuit outputs sufficient audio power to modulation circuit.


With collector modulation, this board features small distortion, adjustable amplitude, and excellent sound quality. It is suitable for radio enthusiasts and students' experiment.


Adjust 223 tuning capacitor to change frequency in the range of 530 ~ 1600KHz.


Use and experimental radio transmitters are subject to local radio regulations. Please adjust amplitude knob to minimize power.


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