Folded Dipole Attic Antenna

Attic antennas many types of antenna can be mounted in the attic if you don t have radiant barrier tech shield.

Folded dipole attic antenna.

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. 8 66 feet 2 64 meters long. This was installed at a previous qth i will be the first or millionth remember i m from fl to affirm that the antenna is the determining factor for success when it comes to one s station set up. The folded dipole antenna consists of a basic dipole but with an added conductor connecting the two ends together.

On 40m it worked a treat. Resonates at 50 4 mhz. Mac af4ps fp 51 note. A folded dipole antenna of length l.

Hence it is called as half wave folded dipole antenna. 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. This antenna is commonly used. The better your antenna the more success you will have making contacts.

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. 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. The length of the dipole is half of the wavelength.

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. 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. Because the folded dipole forms a closed loop one might expect the input impedance to depend on the input impedance of a. 80 40 meter attic antena i live in a tightly packed urban neighborhood without much room for antennas.

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. Typically the width d of the folded dipole antenna is much smaller than the length l. 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.