What makes a good VHF antenna?

There inner electrical element (the part that radiates and receives signals) of VHF antennas is generally made of one of three types of materials: coaxial cable, copper or brass. While all provide acceptable performance, better antennas use brass or copper for optimum performance and durability.

What should I look for in a VHF antenna?

Other considerations for choosing the right VHF antenna include antenna height and gain. Catoe says the vast majority of powerboats in the 24- to 32-foot range do well using 8-foot antennas with 6-decibel (dB) gain. A 3- to 4-foot antenna that’s 3 dB is generally recommended for boats under 24 feet.

What is the best VHF radio antenna?

Best Marine VHF Antennas

Best Marine VHF Antennas Rating
1. Shakespeare 5226-XT 8′ Galaxy Antenna 99%
2. Shakespeare 5101 Centennial White 8′ VHF Marine Antenna 96%
3. Tram 1607-HC 46-Inch VHF Marine Antenna 93%
4. Shakespeare 5104 4′ Centennial VHF Antenna 89%

How can I improve my VHF radio reception?

How can I expand the range?

  1. Elevate your antenna. Antennas are a vital solution to achieve clear communication not only within base stations, but in temporary and mobile situations as well. …
  2. Invest in a rebroadcast system. …
  3. Increase power.
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How high should my VHF antenna be?

Therefore, you can expect two handheld VHF radios held approximately 3ft above the water will be able to communicate over 3.4M. assuming the handheld radio is 3ft (1m) above the water and the ship’s antenna is 100ft (30m) above the water.

How long does a VHF antenna last?

They typically last for five to ten years. Antenna height, more than anything else, determines the distance you will be able to transmit radio signals. The higher an antenna is mounted on a ship, the further it can “see” over the horizon.

Does a VHF radio need an antenna?

VHF antennas are a crucial part of your VHF installation. … The main purpose of a VHF antenna is to provide a radiator for the power that the transmitter in the radio produces and to radiate this energy in the correct direction.

What is 3dB antenna?

A 2dB or 3dB gain antenna is the compromise in suburban and general settings. A 5dB gain antenna radiates more energy toward the horizon (compared to the 0, 2, and 3dB antennas) to reach radio communication sites that are further apart and less obstructed. Therefore, they are best used in flatlands and open areas.

Why is the height of a VHF radio antenna important?

When considering marine VHF radio communications, more important than all other factors is the height of your antenna. The higher you can place your VHF antenna the further you will be able to communicate. … Any angle beyond vertical will lessen the performance of your radio signal.

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Can you cut a VHF antenna?

VHF Marine Antennas. … CB antennas’ coax generally should NOT be cut.

Why does my radio sound better when I touch it?

Your body conducts radio waves to a certain degree, so when you touch the antenna, you are adding the signals coming through your body to the signal picked up by the radio’s own antenna. Result = stronger signal!

Does aluminum foil boost radio antenna signal?

Generally, it won’t help anything and may actually hurt your reception. It does depend on a couple things though, mainly the antenna itself and the frequency you are trying to recieve. Putting foil on the end of the antenna will in effect make the antenna longer.

Does the height of an antenna matter?

In general the higher the antenna the better its performance will be, but sometimes there are some limits as there is a law of diminishing returns, but often this is outside the reach of amateur radio users but sometimes broadcasters will want particularly high antennas to gain the required coverage at VHF and UHF.

Do VHF radios work by line of sight?

VHF radio waves propagate mainly by line-of-sight, so they are blocked by hills and mountains, although due to refraction they can travel somewhat beyond the visual horizon out to about 160 km (100 miles).

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