How high does a Hexbeam need to be?

How high does a Hexbeam need to be?

The Hexbeam works best at heights around 35ft or more but it gives a good account of itself even at 20ft – particularly if it isn’t pointing towards any close obstructions. You will see a marked reduction in SWR when raised to a reasonable height and away from nearby obstructions such as buildings.

How big is a Hexbeam?

If you have a small area and want a monoband performance antenna then the Hexbeam will suit your needs. At only 6.5 meters across it will fit inside most gardens. The turning radius is only 3.25 meters. Compare this to a 20m yagi with a span of 10.75 meters and a turning radius of 5.75 meters.

Who invented the Hexbeam?

Hexbeam vs Dipole The original HEXBEAM was developed by Mike Traffic, N1HXA, in the early nineties. It is true that an “M” over “W” configured yagi antenna that resembled a butterfly was earlier tried successfully.

Is a hex beam antenna directional?

A hexbeam, or hexagonal-beam, is a type of a directional antenna for shortwave, most often used in amateur radio. Its antenna gain is between 5dBi and 6dBi, the forward/reverse attenuation is up to 20dB.

Is a hex beam directional?

Your hexagonal beam is just a variation of the Yagi beam antenna. It receives and transmits best in the direction it is aimed. In other directions, it does not transmit well and you really don’t care.

How does a Hexbeam antenna work?

When the RF wave strikes the reflector element, it induces current in the reflector causing it to radiate in both directions also (green). This causes in the forward direction a resultant stronger wave than either one of them alone. This is how “gain” is achieved in the forward direction.

How do hex beams work?

A hexagonal beam operates exactly the same way but instead of a driven element that is straight like a dipole, it is a wire bent into the shape of the letter M. The reflector, instead of being straight is also a wire bent into a large U shape.

How does a G5RV antenna work?

7 MHz, 40 metres: On 40 metres the G5RV antenna operates using the top section plus nearly 5 metres of the matching section and it operates as a partially folded collinear array with two half waves in phase. Again the antenna presents a reactive load to any transmitter at its input.

What is a cobweb antenna?

The Cobweb antenna is a antenna which is easy and fast to install for portable operations, designed by G3TPW. The Cobweb antenna covers the five upper shortwave bands 20, 17, 15, 12 and 10m. One common balun feeds five dipoles which are folded in a roughly square shape, only one feedline is required.

How does dipole antenna work?

A dipole antenna commonly consists of two identical conductive elements such as metal wires or rods. The driving current from the transmitter is applied, or for receiving antennas the output signal to the receiver is taken, between the two halves of the antenna. Dipoles are frequently used as resonant antennas.

What is a hex beam antenna?

The hexagonal beam (or known by many as the hex beam) has become a wildly popular antenna. It is a directional antenna that provides great performance and does not require a full scale, expensive tower. It allows the average amateur to compete with the big boys for DX and without spending your retirement to do so.

What’s new in the beam calculator interface?

We updated the beam calculator interface and added additional features for calculating beams (calculation of statically indeterminate beams, image saving and section selection)! Support is not defined.

Can you build your own Hex beam?

It can be stealthy against a background of trees or mounted low behind your roof line. The hex can now be bought from a number of commercial sources both here in the U.S. and overseas. But it can also be built by you without fancy tools and a lot of skill. We have tried with this web site to encourage you to build your own hex beam.

What can the beam span calculator do for You?

The beam span calculator will easily calculate the reactions at supports. It is able to calculate the reactions at supports for cantilever or simple beams. This includes calculating the reactions for a cantilever beam, which has a bending moment reaction as well as x,y reaction forces.