Trap Dipole
Take, for example an 80/40 meter trap dipole. The center section of this antenna is a normal 40 meter dipole of conventional length. One end of each trap is connected to the ends of this dipole. The other end of the trap is connected to
An Updated Version of the G5RV Multiband Dipole
The July 1958 edition of the RSGB Bulletin contained an article by Louis Varney G5RV on a novel multiband dipole which did not require traps. Figure 1 (below) shows the antenna, later to become known universally as the ‘G5RV’.
The Final All Band Antenna Solution
When last addressed, my approach was to use a three band trap dipole to cover 75, 40 and 30 meters Since then I have discovered that trap dipoles exhibit reduced bandwidth. Each antenna appears to be omnidirectional on all bands
Another All Band Vertical
by simply taking half of my 80/40 meter trap dipole and turning it on end. The main difference in utility between the trap vertical and this is the need trap acts as an automatic switch disconnecting sections of the antenna
The Short Dipole
Traps allow operating one dipole on more than one frequency. As an example consider an 80/40 meter trap dipole. On 40 meters it works like a normal 40 meter dipole. On 80 meters the inductance in the traps allows each antenna leg to be
The Children of Ambriz
we scout the area around the house for some way to get the radio antenna up. we're ready: the radio connected to a dipole antenna, hanging way up and Careful, just to make sure there is no hidden trip wires from booby traps
All Band Antenna Solution
All I really need now is a multiband dipole (inverted-vee) for 80, 75, 40, Since I already have the 40 meter traps, all I need to build is the 30 meter two band beam mounted on the second mast which now holds a vertical antenna.
Re: SteppIR Stealth-mounted flush with the roof of a house
My current set up > uses a coax trap dipole folded up in my attic, I can see where such a set up with a stepper IR dipole might be about > all you can do in I was unaware that the StepperIR had upgraded its multiband antenna to
Antennas
TRAP DIPOLE - Easily constructed 40meter traps for an all band antenna. 40M BEAM - Beams don’t all have to be horizontal. SHUNT FEED - Put that tower to work as a vertical antenna. BASIC ANT STUFF - Sometimes it helps to review the
More Multiband Antenna Notes
It used a non-resonant dipole, open wire line, and an antenna tuner. Trap dipoles, windom dipoles, and multiple dipoles off one feedline. The trap dipoles worked but resulted in narrow bandwidths on the lower frequency bands. traps+dipole+antenna: traps+dipole+antenna