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Valporquero HF 3 MHz test
Underground station (-80 m.) Sil de las Perlas, Valporquero cave, León,
(Yaesu FT817ND, 0,5 w RF power, WormAnt antenna, 80 m. band)
Two surface stations:
- Point A: distance 240 m (WormAnt antenna).
- Point B: distance 980 m. (SoilAnt antenna).
SoilAnt Green, an easy soil ant for Hams
If you want explore the soil ants performance this simple model it's for you!
Only needs a ATU1), a balum and some meters of conductor. The details in the images and a link for download the full article at the end 
.
Home made RX tactical loop
A simple but effective RX antenna for 40 meters HAM band. S/N RX improvement. Click on image for full article.
: 1)
Automatic Antenna Tunner
start.txt · Last modified: 2024/08/29 11:50 by eb1hbk
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