Amplifier AD8129 for Active Magnetic HF Antenna 1MHz-20MHz for Hula Loop
Amplifier AD8129 for Active Magnetic HF Antenna 1MHz-20MHz for Hula Loop
Active HF Antenna AMPLIFIER project
will work for receiving shortwave HF/SSB/AM radios
you set frequency range with hula-loop diameter and tuning potentiometer
Loop coil are not included, you need to make your own coil (simple way - RG6 coax)
Electrical circuit of this active antenna board based on high impedance differential amplifier wired across the loop. Frequency tuned with varicap. By selecting size and inductance of hula-loop turn you can set desired HF range of the antenna. For example with 60cm diameter hula-loop turn you can get approximately 5MHz- 15MHz range.
BNC connector for RF
ONLY Preamplifier AD8129 for Active Magnetic HF Antenna 1MHz-20MHz for Hula Loop
You will get
- soldered and testes preamp (30dBm) on AD8129 in waterproof box
You need
- Magnetic loop (RG6 coax with lenght about 1-6 meters)
- power supply 12 VDC 100 mA or more (connector 5.5*2.1mm)
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