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Radio => Antennas => Topic started by: DragoSapien on April 18, 2014, 01:42:33 PM

Title: 80M Inverted V help please
Post by: DragoSapien on April 18, 2014, 01:42:33 PM
Could some of you more experanced hams help me on making my home made 80m V? Seems like everything on the net is both 80m and 40m V's. I just want an 80m by its self. I just need to know the wire length for each side. Everytime i read something on a home made v, i get diffrent numbers and now im all confused. I have the center peace made already.

Thanks for any help.
Title: Re: 80M Inverted V help please
Post by: AD on April 18, 2014, 05:57:24 PM

The book formula is 468/freq in mhz gives the total length of the antenna. Take half of that for the length of each leg. Then some say to take off a small -% for an inverted V.

The above formula assumes you antenna is at least 1/2 wavelength above ground, which would be 40 meters which is impractical in most cases.

So for a flat top dipole you need 130 feet of wire or 65 feet for each leg.

This can drop to 62 feet for an inverted V.

Here is a website with a built in calculator function. (

You will need a tuner to be sure you are resonant on the freq you want to transmit on.

here is another page that will let you input the angle as well. (

Remember to add some extra to terminate (wrap) your ends and allow for trimming is necessary.

Just build and try it.