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)

Before publishing review are moderated