Search results
The details of the three antenna configuration modelled with 4NEC2 are as follows; · An antenna wire of 18.7 mtr in total length with 15.7 mtr installed horizontally at 2.5 mtr above the ground and with a 3 mtr 30 degrees angled lead in section to the RF source or the graphed impedance load point.
All you need for a random wire antenna is some wire, your tuner, one or more supports up as high as you can get them to string the wire from the supports to the tuner, at least one or two insulators and a little time.
sample types of end-fed antennas. A wire stuck in the antenna connector of a radio and tossed over a tree branch. A quarter wave or similar vertical antenna, fed against a ground plane or ground rod. They may use traps or other methods for multiband operation.
2.1. Antenna length based on the following formulars: 1/2 λ dipole (feet)= 468 / frequency in Mhz. 1/2 λ dipole (meters) = 142.65 / frequency in Mhz. Full wave loop (feet) = 1005 / frequency in Mhz. Full wave loop (meters) = 306.32 / frequency in Mhz. Cut wire slightly longer for connecting insulators and pruning. 22-Jun-2007 09:30 AM.
All you need for a random wire antenna is some wire, your tuner, one or more supports up as high as you can get them to string the wire from the supports to the tuner, at least one or two insulators and a little time.
Using an eye-hook at each point, attach a length of nylon rope. Tie the other end of the nylon rope to each insulator. The bare copper wire is strung from between the insulators, as shown in the diagram.
Antena „Long Wire” (LW) jest rzeczywiście najprostszą anteną wielopasmową o niekrytycznych wymiarach. Aby używać jej z powodzeniem trzeba jednak zadbać o uziemienie i dopasowanie. Budowa anteny LW. „Long Wire” (LW) to antena utworzona przez pojedynczy przewód zawieszony w wolnej przestrzeni, dołączony
