Search results
Results from the WOW.Com Content Network
The SCR-694 is a portable high frequency two way radio set that was used by the U.S. military during World War II.The SCR-694 provides transmission and reception of AM radiotelephony and MCW or CW radiotelegraphy within the frequency range of 3.800 to 6.500 MHz.
The AN/PRC-77 entered service in 1968 during the Vietnam War as an upgrade to the earlier AN/PRC-25.It differs from its predecessor mainly in that the PRC-77's final power amplifier stage is made with a transistor, eliminating the only vacuum tube in the PRC-25, as well as the DC-DC voltage converter used to create the high plate voltage for the tube from the 15 V battery.
The AN/ART-13 operated in CW (code), MCW and AM (voice) modes and covered LF, MF and HF frequencies up to 18.1 MHz.It had ten autotuned VFO tuned channels that could be preset. . Post-war modifications by COMCO and other companies added crystal frequency control capability and were approved for use on civil airline
Pages in category "Military radio systems of the United States" The following 114 pages are in this category, out of 114 total.
At the time they were built, they were the tallest towers used for military purposes in the Western hemisphere. [1] The two masts are also the tallest towers used for long wave transmissions in the Western hemisphere. Since the collapse of Warsaw Radio Mast, they may be the world's tallest structures that are electrically insulated from the ground.
Computers and their varied applications have revolutionized military comms. Although military communication is designed for warfare, it also supports intelligence-gathering and communication between adversaries, and thus sometimes prevents war. The six categories of military comms are: alert measurement systems; cryptography; military radio systems
In the early 1940s, the U.S. military sought a high-powered radio transmitter capable of infallible voice communications over 100 miles (160 km), sturdy enough to work in all conditions, flexible enough to be able to cover a wide range of frequencies, self-powered and able to operate in motion or at fixed locations.
A PRC-117 radio and SATCOM antenna. The AN/PRC-117F/G radio is currently in use with the United States Navy Seabee and EOD teams in their MRAP and JERRV vehicles. [2] The radio is also in use by the United States Marine Corps, [6] United States Army, [7] USSOCOM, [8] United States Coast Guard, United States Air Force, [9] Royal Air Force, [10] Dutch Army, Spanish Air Force, British Army ...