Loop a quadro per onde medie e lunghe

L'idea, del resto non nuova, mi e'venuta una volta che ho aperto il mio computer per apportarvi una modifica

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160

1.8 a 21 mhz Magnetic loop
For 80 160 connect capacitors accros a & b, use about 390pf

4 meter delta loop
The Delta loop has an impedance of about 100 ohms and to match it we use a quarter wave of 75 ohm coax in series to with the 50 ohm feeder

2m loop full wave antenna
Le caratteristiche piu' interessanti di questa antenna sono, alimentazione diretta in cavo coassiale senza adattatori

14-30 MHz Magnetic Loop Antenna
A high voltage shunt capacitor made from 154 cm 60.5 inches of RG-58/U coaxial cable approximately 150 pF

Two-monoband-magnetic-loop-antennas
The loop for the 21-28 Mhz bands is soldered the ends of the heliax to the butterfly capacitor and to a piece of RG-58 coax

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