80m Inverted V Dipole Length

Place a 1 1 balun on the antenna end of the feedline.

80m inverted v dipole length.

All i needed to fabricate is a replacement 50 ohm coax 1 wave in length and a 1 4 wave length of 75 ohm coax. Build an hf ham radio dipole antenna it is easy to build construct and erect a dipole antenna for the hf bands. The 80m dipole was already on its 48 foot mast with a dx engineering balun and original coax. Formula dipole total length amount frequency each leg of the dipole dipole total length 2 inverted vees total length amount frequency percent each leg of the inverted vee inverted vees total length 2 where full wave 984 half wave 468 quarter wave 234 this tool will help you dynamically to calculate the total length of a dipole inverted v antenna.

Be sure to add the height above ground of the end supports. Fig 1 one form of the simple broadband antenna system. Full half wave inverted vee. Since an 80 meter dipole is approximately 130 feet long and a 160 meter dipole is approximately 250 feet long this space reduction can be critical in getting the.

It resembles a conventional dipole except for the 1 4 wavelength 75 ω segment. Over level ground the minimum height for the apex feedpoint of an inverted vee is determined by the angle downward slope of the vee legs. The larger the wire the wider the bandwidth. If the apex angle is 90 degrees the inverted vee will require approximately 70 percent of the ground space needed by the flat dipole.

The antenna is designed to be fed with 50 or 75 ohm coax cable of most any length with a balun. The inverted vee is is just a lazy dipole that can t hold it s arms up and is about 4 to 5 shorter in its total length. 160 80 40 20 15 10 metres etc using a few simple components at a minimal cost and get great results. The sloping of the dipole wires causes a reduction of the resonant frequency for a given dipole length so about 5 must be subtracted from standard dipole dimensions.

The actual lengths were measured on untensioned cable the antenna is installed as an inverted v with a 140 included angle and an apex height of 60 feet. Both antennas can be constructed just about anywhere using any type of wire you may have and can be used with 50 75 ohm coax or open wire ladder line and a tuner. Enter the frequency in mhz. The wire size can range from 16 awg to 12 awg.

However as with an ordinary dipole it is always best to start with the inverted v a bit too log and trim it to operate with its best performance in the. Build the 80m dipole transmission line resonator. For a dipole or inverted vee antenna. I had lmr 240 ultraflex on hand for the 50 ohm piece.

This works very well with 18 to 12 wire sizes.