An unmanned aerial vehicle (UAV), commonly known as a drone, is an aircraft without any human pilot, crew, or passengers on board. UAVs were originally developed through the twentieth century for military missions too "dull, dirty or dangerous" for humans, and by the twenty-first, they had become essential assets to most militaries. As control technologies improved and costs fell, their use expanded to many non-military applications. These include aerial photography, area coverage, precision agriculture, forest fire monitoring, river monitoring, environmental monitoring, policing and surveillance, infrastructure inspections, smuggling, product deliveries, entertainment, and drone racing.
The High-frequency Active Auroral Research Program (HAARP) is a University of Alaska Fairbanks program which researches the ionosphere – the highest, ionized part of Earth's atmosphere.
In electronics, a remote control is an electronic device used to operate another device from a distance, usually wirelessly. In consumer electronics, a remote control can be used to operate devices such as a television set, DVD player or other digital home media appliance. A remote control can allow operation of devices that are out of convenient reach for direct operation of controls. They function best when used from a short distance. This is primarily a convenience feature for the user. In some cases, remote controls allow a person to operate a device that they otherwise would not be able to reach, as when a garage door opener is triggered from outside.
Radio control is the use of control signals transmitted by radio to remotely operate a device. Examples of simple radio control systems are garage door openers and keyless entry systems for vehicles, in which a small handheld radio transmitter unlocks or opens doors. Radio control is also used for control of model vehicles from a hand-held radio transmitter. Industrial, military, and scientific research organizations make use of radio-controlled vehicles as well. A rapidly growing application is control of unmanned aerial vehicles for both civilian and military uses, although these have more sophisticated control systems than traditional applications.
A directional antenna or beam antenna is an antenna which radiates or receives greater radio wave power in specific directions. Directional antennas can radiate radio waves in beams, when greater concentration of radiation in a certain direction is desired, or in receiving antennas receive radio waves from one specific direction only. This can increase the power transmitted to receivers in that direction, or reduce interference from unwanted sources. This contrasts with omnidirectional antennas such as dipole antennas which radiate radio waves over a wide angle, or receive from a wide angle.
CBC Radio is the English-language radio operations of the Canadian Broadcasting Corporation. The CBC operates a number of radio networks serving different audiences and programming niches, all of which are outlined below.
RTÉ Radio 1 is an Irish national radio station owned and operated by RTÉ and is the direct descendant of Dublin radio station 2RN, which began broadcasting on a regular basis on 1 January 1926.
Vatican Radio is the official broadcasting service of Vatican City.
A radio-controlled aircraft is a small flying machine that is radio controlled by an operator on the ground using a hand-held radio transmitter. The transmitter continuously communicates with a receiver within the craft that sends signals to servomechanisms (servos) which move the control surfaces based on the position of joysticks on the transmitter. The control surfaces, in turn, directly affect the orientation of the plane.
The Orfordness transmitting station was a major radio broadcasting facility at Orford Ness on the Suffolk coast in the United Kingdom able to broadcast to much of Europe. It closed in May 2012 after more than 30 years of service. In 2017 Radio Caroline started broadcasting from the site, though not with the same intended coverage of an audience in Europe as the original station.
A radio-controlled helicopter is model aircraft which is distinct from a RC airplane because of the differences in construction, aerodynamics, and flight training. Several basic designs of RC helicopters exist, of which some are more maneuverable than others. The more maneuverable designs are often harder to fly, but benefit from greater aerobatic capabilities.
KRWG-TV is a PBS member television station in Las Cruces, New Mexico, United States. The station is owned by the Regents of New Mexico State University. KRWG-TV's studios are located at Milton Hall on the NMSU campus in Las Cruces, and its transmitter is located atop Tortugas Mountain in central Doña Ana County. KRWG-TV's signal is relayed on low-power translator stations across southern New Mexico.
WJAG is a commercial radio station broadcasting a talk radio format. It is licensed to Norfolk, Nebraska, and covers parts of Nebraska, Iowa and South Dakota. It was founded in 1922 by the Huse Publishing Company, publisher of the Norfolk Daily News, and since 1956 to a subsidiary, WJAG, Inc. The studios are at 525 Norfolk Avenue in the newspaper headquarters.
The Oxford transmitting station is a broadcasting and telecommunications facility, situated on land 129.5 metres (425 ft) above Ordnance Datum to the north east of the city of Oxford, in Oxfordshire, England. It has a guyed steel lattice mast which is 154.4 metres (507 ft) in height to the top of the main steel structure. The UHF television antenna, which consist of a vertical array of transmitting panels, is mounted above the steel structure. The total height of the mast to the top of this UHF antenna is 165.7 metres (544 ft). It is owned and operated by Arqiva.
First-person view (FPV), also known as remote-person view (RPV), or video piloting, is a method used to control a radio-controlled vehicle from the driver or pilot's viewpoint. Most commonly it is used to pilot a radio-controlled aircraft or other type of unmanned aerial vehicle (UAV) such as a military drone. The operator gets a first-person perspective from an onboard camera that feeds video to FPV goggles or a monitor. More sophisticated setups include a pan-and-tilt gimbaled camera controlled by a gyroscope sensor in the pilot's goggles and with dual onboard cameras, enabling a true stereoscopic view.
KRWG is a non-commercial, listener-supported, public radio station in Las Cruces, New Mexico. KRWG 90.7 FM is sister station to KRWG-TV 22, a PBS station. They are owned by the Regents of New Mexico State University, with offices and studios in Milton Hall on McFie Circle.
Radio is the technology of communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an antenna which radiates oscillating electrical energy, often characterized as a wave. They can be received by other antennas connected to a radio receiver, this is the fundamental principle of radio communication. In addition to communication, radio is used for radar, radio navigation, remote control, remote sensing, and other applications.
Wandering occurs when a person with dementia roams around and becomes lost or confused about their location. It is a common behavior that can cause great risk for the person, and is often the major priority for caregivers. It is estimated to be the most common form of disruption from people with dementia within institutions. Although it occurs in several types of dementia, wandering is especially common in people with Alzheimer's disease (AD). People with dementia often wander because they are stressed, looking for someone or something, attending to basic needs, engaging in past routines, or with visual-spatial problems. Other times, they may wander without aim at all.
Silver Alert is a public notification system in the United States to broadcast information about missing persons – especially senior citizens with Alzheimer's disease, dementia, or other mental disabilities – in order to aid in locating them.
Jason Anthony Jolkowski is an American man from Omaha, Nebraska, who went missing while walking towards his former high school to meet a co-worker for a ride to work. In the aftermath of his disappearance, Jolkowski's parents successfully campaigned for "Jason's Law", a statewide database for missing people in Nebraska. As of 2024, Jolkowski's whereabouts remain unknown.
