The range of conventional VHF (very high frequency) omnidirectional antennas can vary depending on factors such as transmitter power, antenna height and atmospheric conditions. Generally, VHF omnidirectional antennas are designed to radiate signals evenly in all directions around a central point or axis. Under ideal conditions with a clear line of sight and favorable terrain, a VHF omnidirectional antenna can provide effective communication over distances ranging from approximately 30 to 100 miles (48 to 160 kilometers).
This range can be extended with higher antenna installations and increased transmitter power.
VHF omnidirectional radios, equipped with omnidirectional antennas, generally operate in a similar range because their antenna characteristics influence their effective communication distance. These radios are commonly used in applications such as air traffic control, maritime communications and public safety services, where reliable coverage over moderate distances is essential.
Depending on specific operational conditions and environmental factors, VHF omnidirectional radios can achieve effective ranges of approximately 50 to 100 miles (80 to 160 kilometers).
The range of a VHF station, referring to the geographic area covered by a VHF transmitter and receiver configuration, depends on various factors, including transmitter power, antenna height, terrain characteristics and atmospheric conditions.
Typically, VHF stations used in broadcasting, communication and navigation can cover distances ranging from approximately 30 to 100 miles (48 to 160 kilometers) under normal operating conditions. This range may be affected by obstructions, interference and specific application requirements.
DOPPLER VHF Omnidirectional Range (DVOR) is a type of radio navigation aid used in aviation. It provides aircraft information relative to a ground transmitter, helping pilots determine their position and navigate along established airways.
DVOR operates in the VHF frequency range (108 to 117.95 MHz) and uses rotating antennas to create directional signal patterns that aircraft use for navigation. The effective range of DVOR depends on aircraft altitude, terrain, and the configuration of the specific DVOR station, typically providing accurate rolling information over distances up to approximately 200 nautical miles (370 kilometers).
The frequency range of omnidirectional antennas can vary significantly depending on their design and intended use.
Omnidirectional antennas are designed to radiate or receive electromagnetic waves uniformly in all directions, regardless of frequency. They can operate on different frequency bands, including very low frequency (VLF), low frequency (LF), medium frequency (MF), high frequency (HF), VHF and even in UHF bands. (ultra high frequency) and microwaves. Specific frequencies for omnidirectional antennas are chosen based on application requirements, antenna design parameters, and desired coverage area