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The combined weight of the units, 54 pounds (24.5 kg), proved an obstacle to their use in combat. U.S. Marine carrying a PRC-77 during a training exercise in 1989 The AN/PRC-77 Portable Transceiver , also known as AN/PRC 77 Radio Set , is a man-pack, portable VHF FM combat-net radio transceiver manufactured by Associated Industries [ 1 ] and ...
A transceiver has an independent transmitter and receiver packaged in the same unit. In a transponder the transmit carrier frequency is derived from the received signal. The frequency linkage allows an interrogating ground station to recover the Doppler shift and thus infer range and speed from a communication signal without allocating power to ...
The (American version) radio's main receiver covers 30 kHz through 60 MHz, 142 MHz through 152 MHz, and 420 through 450 MHz (plus 1240 through 1300 MHz with the "X" model). The sub-receiver tunes between 118 and 174 MHz, and from 220 to 512 MHz (VFO ranges).
Another function of the CRC field is to ensure the sender and receiver both agree in the message that is being transferred. It is computed using an ITU X.25/SAE AS-4 hash of the bytes in the packet, excluding the Start-of-Frame indicator (so 6+n+1 bytes are evaluated, the extra +1 is the seed value).
Under the body there is an optic-electric sensor system which is believed to be its main sensor. [3] It is expected that BZK-005 has cruising speed of around 170 km/h, service ceiling 8,000 m, max takeoff weight is around 1,200 kg, max payload over 150 kg.
The Corvo Precision Payload Delivery System (PPDS) is a small aerial drone originally intended for logistics, weighs 2.4 kg (5.3 lb) empty, and deliveries payloads of up to 3 kilograms (6.6 lb). [1] The airframe is made of waxed foamcore (foamboard) and the drone is supplied as a self-assembly flatpack, complete with a tablet-PC control centre ...