ANTENTOP- 01- 2016 # 020
Attic Antenna for 40-, 30-, 20-,
17-, 15-, 12 and 10 meter Band
antenna was installed on the attic. Antenna was matched with help
an Automatic ATU in 40-, 30-, 20-, 17-, 15-, 12 and 10 meter amateur
Bands. The Antenna worked satisfactory on the above mentioned
making the antenna you need length in 50- meters insulated wire
in diameter 2.0 mm (12- AWG). The antenna is a stub dipole with
dimension 33- cm between wires and length of each side 240 cm.
The dimension between wires is set up by empty plastic bottles
(5- liter water container) that are used here as a spread insulator
between the wires.
for the stub dipole there is used (240cm x 2 x 2= 960- cm) 960
cm of wire. Two lengths of the wire in 40- cm each are connected
to the Automatic ATU. Coaxial cable is going from the Automatic
ATU to shack with transceiver. Rest wire (near 39.6- m) is coiled
around a form in diameter 55- mm. Length of the winding is 80-
of the simplicity of the design the antenna allows satisfactory
work in the range of amateur bands.