What is an Omnidirectional HDTV Antenna?
An omnidirectional HDTV antenna is an antenna that is designed so that it can send and receive equal amounts of signal in all directions. That means that these antennas basically have a donut-shaped radiation pattern that can get signals for miles around. The most common type of this antenna is the dipole – which is an antenna that looks like a T split in half. This is similar to the rabbit ears of days gone by.
There are many places that you can that you can buy one of these antennas. You can look online for an omnidirectional HDTV antenna with mount and you could find many of them. They are at just about any home electronics stores.
This article will help to ask some of the more frequently asked questions about the omnidirectional antenna. It can also answer some questions that you might not have thought about yet. Read on for all the answers.
Frequently Asked Questions
- What is a dipole? The word “dipole” has the prefix “di” meaning two and the root word “pole” and you know what that means. That means a dipole is an antenna with two poles that can get signal from more than one direction.
- How does a dipole create electromagnetic energy? One side of it is always positive and the other side is always negative. Electrons move through conductive elements as current goes through the antenna. When electrical current is applied, all the electrons gather up on the negative side. This leaves the other side positively charged. This draws the negative electrons to the positive and the electrical components polarity changes. Read here for more information about how this works: https://www.quora.com/How-does-an-oscillating-electric-dipole-create-EM-waves. It is very interesting information.
- What is the difference between omnidirectional antennas and directional antennas? There are three big differences between the two – shape, range, and radiation pattern. Directional antennas are more powerful than omnidirectional ones. They are designed to send and receive signals from one direction. They can have a farther reach to and from the destination, such as a cell tower. If they are under perfect conditions, they can reach ten miles.
Omnidirectional antennas send signals in every direction. They are not as powerful as the directional ones. They are best if individual cell towers are within five miles. Their biggest drawback is that they can cause issues with other antennas that are nearby if there is not enough room between them, making them less effective.
- When should an omnidirectional antenna be used? They can be used when there are multiple towers within five miles. They are also good when there are obstacles that are in the way but there is usable signal. These obstacles could include high buildings or dense foliage, as well as valleys and bodies of water.
- Do omnidirectional antennas work? Yes – when they are installed in the right way and in the proper circumstances and they have the potential to be better than directional antennas. These circumstances include what was mentioned above – where there are obstacles in the way but there is a good signal.
- How do you install an omnidirectional antenna? The higher that you can get one of these antennas off the ground, the better. The signal nearer the roof tends to be stronger because there are less obstructions. To install it, you would just use any mounting brackets that came along with it and attach it to a mounting pole or a vent pipe. You just mount it and forget it – you never have to adjust it at all.
- Can I use an omnidirectional antenna with a cell signal booster? This is not possible because they are bi-directional. This makes it hard for them to work together. The antenna and the cell signal booster work at different frequencies, as well. They can’t pick up signals together because of this.
Advantages of the Omnidirectional Antenna
- They are easier to install – this antenna is easier to install because you don’t need to figure out how to adjust it.
- You can use it for multiple carriers – you can boost the signal from multiple carriers or signals at the same time. Learn more about that here. These antennas are awesome this way.
- Good where there are obstructions – even with obstructions in the way, this antenna works very well – it may even work better in these conditions.
- Overload issues – this antenna can help to prevent issues with overload in areas where there is a decent signal.
- Less reach – these antennas have less reach than directional antennas.
- Not ideal – these are not ideal where the signal is more than five miles away.
- Interference – there is a larger chance of interference if it is not installed high enough.
- Interference – it could cause issues with other antennas from other items.
Omnidirectional antennas can be great in certain situations, especially when there is a lot of interference in the area. They can be good if you are within five miles of the signal and they can be used with different carriers. They can be an overall good antenna for many uses.