Most ground SINCGARS radios have the ability to control output power; however, most airborne SINCGARS radio sets are fixed power. Those RTs with power settings can vary transmission range from approximately 200 meters (660 feet) to 10 kilometers (km) (6.2 miles). Adding a power amplifier increases the line of sight (LOS) range to approximately 40 km (25 miles). (These ranges are for planning purposes only; terrain, weather, and antennae height have an effect on transmission range.) The variable output power level allows users to operate on the minimum power necessary to maintain reliable communications, thus lessening the electromagnetic signature given off by their radio sets. This ability is of particular importance at major command posts, which operate in multiple networks. SC CNR users outside the FH network can use a hailing method to request access to the network. When hailing a network, a user outside the network contacts the network control station (NCS) on the cue frequency. In the active FH mode, the SINCGARS radio gives audible and visual signals to the operator that an external subscriber wants to communicate with the FH network. The SINCGARS operator must change to the cue frequency to communicate with the outside radio system. The network can be set to a manual frequency for initial network activation. The manual frequency provides a common frequency for all members of the network to verify that the equipment is operational. During initial net activation, all operators in the net tune to the manual frequency. After communications are established, the net switches to the FH mode and the NCS transfers the hopping variables to the out stations.
an prc 119 power output definition
e. An advantage of SINCGARS over current radios is the ability to control output power. The RT alone has three power settings that vary transmission range from 300 meters (990 feet) to 8 kilometers (5 miles). Adding a power amplifier (one of the modular components) increases the range to 35 kilometers (22 miles) or line of sight (LOS). The variable output power level allows users to lessen the signature given off by the radio set. Using lower power is particularly important at major CPs that operate in multiple networks. The ultimate goal is reducing the electronic signature at the CP. The NCS should ensure that all members of the network operate on the minimum power necessary to maintain reliable communications.
(1) Vehicular mount MT-6352 is common to all vehicular sets. The mount fits into the same drilled hole footprint as the previous AN/ VRC-12 series radios. It provides a secure mounting location in the vehicle to prevent damage to equipment from shock and movement. The vehicular mount is issued as part of the installation kit, and like previous radio mounts, it has connection points for power and auxiliary equipment. The connectors are on the top of the mount for easy access when changing cables or configurations.
(2) Mounting adapter AM-7239 converts the vehicle power supply to the various operating voltages for radio and amplifier operation. The adapter provides surge protection for the radio if the vehicle is started when the radio is on. The adapter interfaces the vehicle intercom system and provides amplified output to power an external speaker. The adapter can house two RTs and one power amplifier in the same space that a single AN/VRC-12 radio previously occupied.
(3) Power amplifier AM-7238 provides up to 50 watts output power from the radio in vehicle mounts. A single amplifier mounts in the mounting adapter to the side of the radio. If the set requires two high-power radios, a separate mount is used for the second amplifier. Due to internal circuits, the adapter mounted amplifier can only be used with the radio installed in the lower housing.
(4) SINCGARS uses broadband antennas that do not have to be changed with changing frequency (for example, OE-254 ground-plane or AS-3900 vehicular whip antennas). The output frequency can change over a wide range between hops due to the FH nature of SINCGARS. Therefore, conventional antennas with narrow bands of operation (for example, RC-292 ground-plane antenna) cannot be used.
(c) Vehicular long-range/short-range radio AN/VRC-89. The AN/VRC-89 (Figure 3-6) is built from the AN/VRC-87 by adding another RT and a power amplifier. The AN/VRC-89 replaces the AN/VRC-12 and AN/VRC-47 which have a single RT and an auxiliary receiver. The additional RT replaces the auxiliary receiver in the previous versions. The RT provides increased capabilities over a receiver alone.
(f) Vehicular dual long-range/retransmission radio AN/VRC-92. The AN/VRC-92 (Figure 3-8) adds a second power amplifier to the AN/VRC-89 to provide high-power capability for both radios in the mount. The second amplifier has its own mount (MT-6353/VRC) and obtains its power from cable connected to one of the auxiliary power outputs from the radio mount. In the mounting adapter, the comounted amplifier can only be used with the lower radio, and the separate amplifier can only be used with the upper radio. The AN/VRC-92 replaces the AN/VRC-45 and AN/VRC-49.
a. There are two main categories of ancillary equipment associated with SINCGARS: remote control devices and data fill/variable storage transfer devices. Other devices that generate signals passed over SINCGARS radios, such as data terminals, are classified as input/output devices.
(2) The SRCU (Figure 3-13) provides securable remoting of a single radio up to 4 kilometers (2.4 miles). The advantage of the SRCU over previous remotes is its ability to secure the wire line between the radio and the terminal set. The SRCU controls all radio functions including power output, channel selection, and radio keying. The remote also provides an intercom function from the radio to the terminal unit and vice versa.
(B) "Motor vehicle" means any vehicle, including mobile homes and recreational vehicles, that is propelled or drawn by power other than muscular power or power collected from overhead electric trolley wires. "Motor vehicle" does not include utility vehicles as defined in division (VV) of this section, under-speed vehicles as defined in division (XX) of this section, mini-trucks as defined in division (BBB) of this section, motorized bicycles, electric bicycles, road rollers, traction engines, power shovels, power cranes, and other equipment used in construction work and not designed for or employed in general highway transportation, well-drilling machinery, ditch-digging machinery, farm machinery, and trailers that are designed and used exclusively to transport a boat between a place of storage and a marina, or in and around a marina, when drawn or towed on a public road or highway for a distance of no more than ten miles and at a speed of twenty-five miles per hour or less.
(D) "Commercial tractor," except as defined in division (C) of this section, means any motor vehicle that has motive power and either is designed or used for drawing other motor vehicles, or is designed or used for drawing another motor vehicle while carrying a portion of the other motor vehicle or its load, or both.
(I) "Bus" means any motor vehicle that has motor power and is designed and used for carrying more than nine passengers, except any motor vehicle that is designed and used for carrying not more than fifteen passengers in a ridesharing arrangement.
(K) "Bicycle" means every device, other than a device that is designed solely for use as a play vehicle by a child, that is propelled solely by human power upon which a person may ride, and that has two or more wheels, any of which is more than fourteen inches in diameter.
(L) "Motorized bicycle" or "moped" means any vehicle that either has two tandem wheels or one wheel in the front and two wheels in the rear, that may be pedaled, and that is equipped with a helper motor of not more than fifty cubic centimeters piston displacement that produces no more than one brake horsepower and is capable of propelling the vehicle at a speed of no greater than twenty miles per hour on a level surface. "Motorized bicycle" or "moped" does not include an electric bicycle.
(M) "Trailer" means any vehicle without motive power that is designed or used for carrying property or persons wholly on its own structure and for being drawn by a motor vehicle, and includes any such vehicle that is formed by or operated as a combination of a semitrailer and a vehicle of the dolly type such as that commonly known as a trailer dolly, a vehicle used to transport agricultural produce or agricultural production materials between a local place of storage or supply and the farm when drawn or towed on a public road or highway at a speed greater than twenty-five miles per hour, and a vehicle that is designed and used exclusively to transport a boat between a place of storage and a marina, or in and around a marina, when drawn or towed on a public road or highway for a distance of more than ten miles or at a speed of more than twenty-five miles per hour. "Trailer" does not include a manufactured home or travel trailer.
(P) "Semitrailer" means any vehicle of the trailer type that does not have motive power and is so designed or used with another and separate motor vehicle that in operation a part of its own weight or that of its load, or both, rests upon and is carried by the other vehicle furnishing the motive power for propelling itself and the vehicle referred to in this division, and includes, for the purpose only of registration and taxation under those chapters, any vehicle of the dolly type, such as a trailer dolly, that is designed or used for the conversion of a semitrailer into a trailer.
(YY) "Motor-driven cycle or motor scooter" means any vehicle designed to travel on not more than three wheels in contact with the ground, with a seat for the driver and floor pad for the driver's feet, and is equipped with a motor with a piston displacement between fifty and one hundred cubic centimeters piston displacement that produces not more than five brake horsepower and is capable of propelling the vehicle at a speed greater than twenty miles per hour on a level surface. 2ff7e9595c
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