Because of increasing noise levels in my neighborhood with S-meter readings seldom under S9 on the lower HF bands I have build this small loop. The loop consists of three turns of PVC insulated 15mm copper tubing in 1 meter diameter and there is a 500pF variable capacitor to tune the circuit into resonance. Noise/signal levels increased considerably compared to my other antennas and it is now possible for me to read weak stations on the lower bands. It is also possible to transmit with the antenna, but no more than 5-10 watts do to capacitor sparking.
Capacitor is hidden under the upper plastic bucket. The thin blue wire loop is the coupling loop feeding the feed line.
The 500pF capacitor works down to 3,5MHz. For 160 meters, 2000Pf is needed.
First edition: 24.06.2009
Lastest edit: 08.01.2012