Question: How High Does A Ham Radio Antenna Need To Be?

Does a dipole antenna have to be straight?

Dipole antennas need not be installed in a horizontal straight line.

They are generally tolerant of bending, sloping or drooping as required by the antenna site.

Remember, however, that dipole antennas are RF conductors..

Is higher dBi better for antenna?

The higher the dBi number of the antenna, the higher the gain, but less of a broad field pattern, meaning that the signal strength will go further but in a narrower direction, as illustrated in the diagram below.

How do I make my antenna signal stronger?

How To Get More Channels with Your Indoor AntennaExperiment with Different Locations in Your Home. … Use a Longer Cable To Reach That Window. … Face it Towards the TV Transmitter Towers. … Lay Your Antenna Flat Horizontally. … Move it Higher Up (Highly Recommended) … Put it in a Skylight (Highly Recommended) … Use a Better Cable (Highly Recommended) … Eliminate Electronic Interference.More items…•

Can you put an antenna in the attic?

By far, the most critical factor for TV antenna placement is height. … For outdoor TV antennas, the best locations are on your roof or garage. If your attic is accessible, and you don’t have a radiant heat barrier or metal roof, you can also try installing an outdoor TV antenna within your attic.

What is the best antenna for ham radio?

Our Top 12 Best Antenna for Ham RadioGenuine Nagoya UT-72 Super Loading Magnetic Mount VHF/UHF (19-inch) … Tram 1185- Best Dual Band Mobile Antenna. … Bingfu VHF UHF Police Scanner Antenna. … Workman Magnetic Mobile Antenna. … Super Antenna MP1DXTR80 HF SuperWhip. … Tram Amateur Dual Band Hi-Gain Hi-Power Magnet Antenna.More items…

How long is a 40 meter dipole antenna?

Dipole lengthApproximate Lengths for HF Ham Band Dipole AntennasBand (MHz)Length (Feet)Length (metres)3.5 (80 metres)13742.27.0 MHz (40 metres)68.521.110.1 (30 metres)47.514.76 more rows

What is the gain of a dipole antenna?

If no direction is specified, gain refers to peak value in the direction of the antenna’s main lobe. For example, a collinear antenna oriented east-west with 6.41 dBd gain would be able to transmit or receive more than 4 times the signal power of an ideal dipole antenna in the east and west directions.

How high should my dipole be?

0.6 wavelengthsThe optimal minimum height is 0.6 wavelengths over the ground. So, the gain of the half-wave dipole has a regular variation as a function of height over the ground.

Can a TV antenna be used for ham radio?

Ham radio is not an inexpensive hobby, and you do need an outdoor antenna, way up as high as you can get it unless you live in an area surrounded by nearby repeaters. TV antennas can be carefully modified for your ham activity.

Does an attic mounted antenna need to be grounded?

TV antennas in the attic do not require grounding. However, because the coax cable will run on the exterior of the house I recommend that the coax cable be grounded at the location near to where it re-enters your home. … The signal splitter becomes the ground block and grounds the coax cable.

How far can a 5 watt ham radio transmit?

So according to our rule-of-thumb, 2 people around 6 feet tall using a 5 watt handheld two-way radio, used on flat ground with no obstacles, will have a maximum range of approximately 6 miles.

Can a ham radio pick up CB?

The answer is yes, and it comes down to legality and licensing. Licensed hams are not allowed to talk to anyone who is not licensed unless it is an emergency. So by contacting a CB radio using a ham radio, you are going against the FCC and could face legal repercussions.

Can you put a ham radio antenna in the attic?

Attic mounted antennas will work just fine and you will receive pretty close to the same results as you would if the antenna was outdoors. … Attic mounted antennas are a great solution for amateur radio operators looking for an effective VHF/UHF antenna system installed in a limited or restrictive situation.

Does aluminum foil boost antenna signal?

Wrap your TV antenna in tin foil. Wrapping aluminum foil around your antenna will basically increase the surface area and conductivity of the antenna to boost the signal that your TV receives from it.

Can an antenna be too long?

If you have any local transmitters on the AM band, then they can overload the early stages of your radio if your antenna is too long. You will hear the stations even though you’re not tuned to them! Otherwise go for it!

At what height should install an antenna for a better signal?

30 feetIn general, the higher you place your antenna, the better. It would be best to have your antenna placed 30 feet above ground level to give you the clearest over-the-air connection with a tower. For those looking for that height, outdoor antennas are usually a good place to start.

Is higher antenna gain better?

Since an antenna does not make power, increasing gain in one direction will decrease propagation in another. … On an open and flat highway, a high gain antenna will be better… 3 dB, 6 dB, etc. If your desired coverage area is hilly then a ¼ wave omnidirectional antenna will be better.

What is a stealth antenna?

A Stealth Antenna is one which is designed to go unnoticed. This can be accomplished by any of the following: 1. Making it difficult to see.