VHF


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VHF

(communications)

VHF

(Very High Frequency) A range of radio frequencies from 30 MHz to 300 MHz. The VHF band is used for television, FM and amateur radio, airplane navigation and traffic control and marine communications. See UHF and spectrum.
References in periodicals archive ?
The global VHF Air Ground Communication Stationsmarket analysis comprises a thorough understanding of the competitive scenario, current trends in the industry, and substantial regional standing.
For each system, sensitivity was calculated as the proportion of confirmed cases in the VHF database with a match found within either the national call center database or within the prefecture alerts database.
Coast Guard, in time of need, mariners with a VHF antenna 6 feet above sea level can expect at least 20 miles of service to a Coast Guard listening station, and often farther (charts of coverage for Florida may be found at www.navcen.
'The V511 positions our VHF portfolio to address the fullest range of vehicular and dismounted combat net radio requirements.
Most radio-telemetry research with moose was done before the advent of GPS collars, and telemetry studies focusing on survival still commonly use VHF collars.
Officers realised that the bearings from the VHF radio pointed to the caller being on land.
DuMont offered a plan that would have at the very least doubled the number of TV channels available in each city: The network proposed using VHF channels in some cities and the new UHF (ultra-high-frequency) channels (14 and higher) in others.
A harbour authority spokesman told the Echo: ``The Coastguard and the RA had been tracking a rogue operator for some time, whose activities have been blocking communications frequencies which allow vessels in the Bristol Channel and Cardiff Bay to keep in touch with us.'' Routinely, boats wanting to access or leave the bay through the barrage use the designated VHF channel 18.
While C-CHFV infections are rare in humans, the virus is notorious for nosocomial outbreaks of VHF, typically following admission of an index case to a health-care facility where VHF was not suspected, with mortality rates up to 40%.
To maintain transmission security even under enemy jamming, the radio contains Army VHF SINCGARS and Air Force UHF Have Quick frequency-hopping waveforms in software.
(Rochester, NY), a supplier of military tactical radios for worldwide defense forces, has introduced the RF-5800V-NM VHF networking module to provide secure, wireless Internet Protocol (IP) connectivity for tactical applications such as remote sensors or "smart" munitions.
Vertex Standard has introduced the VX-4000 Public Safety Mobile Series in both VHF and UHF models.