Antenna for 144...146 MHz
This antenna is manufactured according to the information received from the Polish radio Amateurs. The antenna is a phased system of radiators.
Vibrator antenna shown in Fig.1.
By repeating antenna please note that winding lengthening coils are made in different directions. Drawing frames extension of the coils shown in Fig.2.
The antenna serves as duralumin or metal plate, bent at an angle of 90 degrees. To it are attached the counterweight, as shown in Fig.3. On a horizontal platform is attached the bottom of the extension coil and a coaxial connector for cable, vertical Playground serves for fixing the antenna to the mast. In compliance with the dimensions of the antenna VSWR is less than 1.5.
For more detailed settings, you can alter the length of the top pin. CWS carefully tuned antenna close to 1. The antenna is not critical to the installation site, and the local ties is not inferior to directional antennas.
Author: S. Ilyashenko (EW3CS), Brest; Publication: N. Bolshakov, rf.atnn.ru