Folded Dipole Attic Antenna

The folded dipole antenna or folded dipole aerial is widely used not only on its own but also as the driven element in other antennas like the yagi antenna and various other types of antenna.

Folded dipole attic antenna.

The folded dipole antenna consists of a basic dipole but with an added conductor connecting the two ends together. Hence it is called as half wave folded dipole antenna. Because the folded dipole forms a closed loop one might expect the input impedance to depend on the input impedance of a. A folded dipole is a dipole antenna with the ends folded back around and connected to each other forming a loop as shown in figure 1.

Six meter folded dipole made of 450 ohm ladder line 16 7 strand copper clad steel wire. The 40 meter dipole was loaded with some coils so that i could fit it in the attic. 80 40 meter attic antena i live in a tightly packed urban neighborhood without much room for antennas. Mac af4ps fp 51 note.

Need lots of room keep them away from metal objects like heaters and ducts wire antennas can be run near the peak of the roof inside the attic bent in odd shapes to match the space available. The better your antenna the more success you will have making contacts. Resonates at 50 4 mhz. 8 66 feet 2 64 meters long.

Typically the width d of the folded dipole antenna is much smaller than the length l. Made from sturdy materials including solid aluminum and a waterproof dipole box this antenna is designed to resist the elements even in a non weatherproofed attic so it can continue to provide your household with free access to tv channels for a long time. The infamous attic dipole. I was not very hopefull because the attic has metal wiring and vents and also because it is covered by a slate roof.

A folded dipole is an antenna with two conductors connected on both sides and folded to form a cylindrical closed shape to which feed is given at the center. It gave me 40 20 and 15 with a push because although a 40 meter dipole should give you a resonant 15 meter antenna in this case with the coils for 40 it mucked the maths up and caused the atu some trouble. Dimensions of the finished antenna you could do without a antenna analyzer if you build your six meter folded dipole antenna system with the following dimensions. I decided to install an 40 meter dipole in my attic space which is about 25 by 45 feet and about 25 feet up from the ground.

On 40m it worked a treat. The length of the dipole is half of the wavelength. This antenna is commonly used. Folded dipole antenna basics.