Home > Antennas, M0CVO, M0CVO Amateur Radio, Radio and electronics, radio Antics, Uncategorized > Build Yourself a 40/80m Antenna For Small Gardens Part 2.

Build Yourself a 40/80m Antenna For Small Gardens Part 2.

After writing the previous article on the small antenna for 40 and 80m HF Bands I was asked by several people for photographs of the antenna in question.  Therefore I have done this article as a follow on with pictures.

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Firstly you need the coil to be wound.  This one is 78 turns for 1mm ECW on a 41mm diameter former (plastic pipe) at 140mm long.  The screws hold the wire in place as described in previous blog post.

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Then you take two lengths of wire – one at 10.14m and one at 2m (or longer – I cut this one at 2.5m) and attach them either side of the coil.  Tape the longer section to a fibre glass fishing pole using insulation tape and allow the other end to lay loose beside it.  raise the pole and tie the hanging end off to somewhere convenient – I used the fence.

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A better picture of the coil on final position.

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Use of choc block to attach coax cable – second wire is a 10m long earth wire.

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The earth wire is just run around the garden.

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Final test using an AA30 antenna analyser shows the SWR at 3550kHz – just in the right place for a spot of CW DXing. Obviously , if you wanted the sweet spot higher, use a shorter length of wire at the end.

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  1. January 14, 2019 at 5:46 pm

    Wery nice Balun Antenna Thank you

    • January 14, 2019 at 5:51 pm

      This one doesn’t use a BALUN as is a simple wire vertical. However a 4:1 UNUN could be used at the base to reduce the feedpoint impedance.

  2. January 14, 2019 at 5:47 pm

    Wery Nice Balun Antennas. Thank You. TB9BCD

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