What is vhf vs uhf

Therefore, VHF is most commonly used by farms, rural mining projects or users who are prepared to sacrifice in-building coverage, for better outdoor coverage over longer distances. VHF has no public frequencies available, therefore, VHF radios can only broadcast on private or licenced frequencies. They are in effect toy radios, or personal use radios, to be used on the occasional camping trip or purchased in order to talk to truck drivers on the road, but consumer CB radios are not business communication devices.

These radios are built to a far higher commercial and government specification than the toy CB radios you will find purchase elsewhere If you need any further independent advice , please feel free to contact our solutions team. They earn no commission and will give you advice that's right for your business. Unlike other many other online stores out there, Radio Warehouse are fully authorised dealers of every solution we sell.

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Business and television are the primary users in the low part of this band, but interference from primary users is rare in the high non-business part of the band, due to the relatively small number and shorter range of UHF television stations. Other secondary users and RF noise are also less likely at these frequencies. Equipment is moderately expensive and diversity systems are strongly recommended, but high quality audio can be achieved along with a large number of simultaneous systems.

This band offers additional channels and potentially less interference from RF noise, as well as antenna lengths of only 3 or 4 inches. Other operating characteristics are similar to low-band UHF. It should be noted that the allocation of these bands is always subject to governmental change as demand for spectrum increases. Technologies such as spread spectrum transmission may also further limit the availability of certain bands for wireless microphone use.

These allocations vary from country to country in an even less predictable pattern than in the U. This, along with other information about how wireless microphones work, can be found in our online publication Selection and Operation of Wireless Microphone Systems. Find An Answer Browse our vast Answer database for answers to many common technical questions. Search the Knowledge Base Fields Title. URL Name. FAQ Question.

Attachment Link s. Last Edit Date. Number of Views 3. Number of Views Number of Views 6. We offer custom systems of the best two-way radios for any budget. Find the right Motorola solution for you here. These frequencies are normally used for outdoor operation and in rural areas. Typical industries that use these frequencies include:.

The trade-off for ultra-high frequency for distance is in building penetration or densely wooded areas. UHF frequencies are most commonly used and suitable for industries such as:. UHF radio communications are usually equipped with shorter antennae.

This makes it easier to store radios on belts or under jackets. Fitting them with a longer antenna can boost range for building structures that have heavy concrete or denser building materials. Since people need all different types of radio signals a variety of wireless equipment is necessary to satisfy all needs.

The FCC is in control of who operates within each specific band and if anyone has priority over other operators.

The primary users are properly licensed radio and television broadcasters as well as commercial communication services such as cell phones and two-way radios. Very high frequency is commonly used for FM radio broadcast, two-way land mobile radio systems, long-range data communication, and marine communications, just to name a few. VHF waves must not exceed the local radio horizon of miles. VHF frequencies are less likely to be interrupted by atmospheric noise, issues with electrical equipment, and other interferences.

There are different bands within VHF frequency, including low-band and high-band. Low-band VHF range of 49 MHz includes transmission of wireless microphones, cordless phones, radio controlled toys and more. Despite the potential background noise this a popular option because of the low cost equipment. Transmission power is limited to under 50 mW, unless you are operating an assistive listening system in the MHz range.