Difference Between VHF And UHF Antennas

The Federal Communication Commission (FCC) controls the operating frequencies that are present in every wireless communication such as radios and cell phones. Knowing the differences between VHF and UHF Antennas will give you a better understanding of choosing the right antenna. High-frequency electricity is generated by a transmitter, which is absorbed by the antenna and coupled into space as electromagnetic waves. When the antenna is removed while the transmitter is generating high-frequency energy, phenomena occur.  The energy flows until the antenna is removed, during the time it reflects the transmitter on the same conductor from which it emerged. That being the case it is important to have an antenna.

VHF vs UHF Antennas

The main difference between VHF and UHF antennas is that the VHF has slightly larger antennas that directly help to improve its range and how far it can travel. On the other hand, UHF antennas are small and have stubby antennas.

VHF vs UHF

Very high-frequency antennas or VHF are internal parts of regularity systems. These are majorly used in systems that possess a range of 30 to 300 MHz to receive signals. VHF antennas in the outdoors have V-shaped elements and some clustered straight elements. 

Ultra high-frequency antennas or UHF are used majorly in TV broadcasting, cell phones, and other wireless communications channels and satellites including GPS. UHF antennas have small elements and are only a few inches wide. You can distinguish these antennas by their arrangement in parallel rows of straight prongs.

Comparison Table Between VHF And UHF

Parameters of ComparisonVHF AntennasUHF Antennas
MeaningVHF stands for very high frequency and these antennas use frequency signals for commercial communications.UHF stands for ultra-high frequency and these antenna signals are used for two-way radio public safety channels.
Range of FrequenciesVery high-frequency waves.Smaller frequency waves.
Battery lifeVHF doesn’t use a lot of its battery life.UHF uses a lot of battery life compared to VHF.
CostVHF antennas usually come at a lower cost.UHF antennas come at a higher cost.
Signal TravellingVHF antennas signal mostly travel outdoors.UHF signals from antennas can travel through wood, steel, and concrete, etc.

What is VHF Antennas?

A VHF antenna is also known as aerial stands for a very high-frequency antenna that transmits signals through its device for communicable devices such as radios, televisions, cell phones, and other cordless phones, etc.

The waves of frequency range from as low as 3 MHz to as extremely high as 30 MHz. Some CB radios and shortwaves use very high frequency, but it is commonly used for FM radio. 

VHF cannot exceed the local radio horizon of 100 miles. Atmosphere noise, any electrical equipment causing trouble, and any other interferences are less probable to cause any disturbances in VHF frequencies.

There are different kinds of bands present in VHF frequency. Low band VHF frequencies and high band VHF frequencies are present within VHF frequency. 

The low band frequencies range is 49 MHz and is found in radio-controlled toys, cordless phones, and in the transmission of wireless microphones, etc.

The higher band frequencies that range from 54 to 72 MHz operate in 2 to 4 channels of television and some wireless networks. The higher band frequencies that range from 76 to 88 MHz operate in 5 to 6 channels.

VHF antennas are the simplest antennas for your outdoors. 

What are UHF Antennas?

Ultra-High Frequency (UHF) is a term used to describe a frequency that is lower in frequency.

It’s a band that sits between VHF and SHF, or Very High Frequency and Super High Frequency, respectively.

The frequency range for ultra-high frequency is 300–3000 MHz (3GHz)

The military, notably the Navy, embraced and exploited this band form, and it became “stuck.” 

YV sets used to have 11 VHF channels, and then the FCC opened up UHF for TV, giving at least one, and in some cities two, additional TV channels. 

These antennas were mainly smaller stations that weren’t linked with any network, such as NBC, CBS, or ABC, and instead bought syndication rights for older shows and made their own locally produced shows.

The production’s sets resembled something you’d see in a high school play, and they occasionally fell over and collapsed in the middle of the show.

UHF is generally seen as a selectable between channel kinds on very ancient TVs (as in, dials for controls and no remote style old). In this case, it’s similar to the difference between FM and AM on the radio. This also applies to radio bands.

Main Differences Between VHF And UHF Antennas

  1. Bands 1 and 2 are used by VHF, while Bands 3 and 5 are used by UHF.
  1. VHF has longer wavelengths and less capacity, UHF has shorter wavelengths and more bandwidth, allowing it to transmit more data if needed.
  1. Since VHF has a larger range, it needs a longer antenna (although fatter shorter ones can be used). UHF doesn’t go as far as VHF, but it bends better around and inside structures. 
  1. VHF allows fewer data to transmit since it has bigger wavelengths and since UHF has shorter wavelengths, channels typically require more bandwidth, allowing for more data to be transmitted.
  1. VHF is good for open spaces, while UHF is good for cities.
  1. Broadcast radio, marine communications, air traffic control, and beacons are all best suited with VHF antennas while cellphones, 2.4 GHz WiFi and Bluetooth, and TV broadcasts are all best suited with UHF.

Conclusion

If you are stuck in choosing between VHF and UHF antennas, VHF is great when you are outside, at its most basic level. It travels a lot further than UHF, but it has a hard time penetrating solid surfaces. 

UHF penetrates objects more effectively (so it can get through walls if you’re in a building), but it doesn’t travel as far.

VHF has longer wavelengths and less bandwidth. Whereas, UHF has shorter wavelengths and more bandwidth, which allows it to carry more data if necessary.

In general, UHF is a fair compromise between the qualities of VHF and the higher frequencies of 700/800 MHz. 

The 700/800 MHz band has a relatively small range and is primarily used for trunking. It has good penetration and can transport a large amount of information.

References

 

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