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  1. Bluebell

    Electrically small antennas for 433 MHz

    Hi jbartos, I've built a helix before simliar to one in your article, but the gain is only -20dBi. Care to give your comments?
  2. Bluebell

    Electrically small antennas for 433 MHz

    I've done something like this before.The antenna is about 30mm in height with a reasonable gain. The idea is to attach a simple matching network to the antenna, that's all.
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