La atomizacion de los atomos

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DEPARTMENT OF THE NAVY
Headquarters United States Marine Corps
Washington, D.C. 20380-1775

1 June 1999

FOREWORD

Communications and information systems (CIS) support collect- ing, processing, and exchanging information. CIS automate routine functions, freeingcommanders and staffs to focus on the aspects of command and control that require experience, judg- ment, and intuition. Personnel who install, operate, and maintain CIS play a key role in the command and control of the Marine air- ground task force (MAGTF). It is an understatement to say that the success of the MAGTF in the modern battlespace depends on the effective employment of CIS.

One of themost important networks of the MAGTF CIS architec- ture is single-channel radio (SCR). SCR is the principal means of communications support for maneuver units. SCR communica- tions equipment is easy to operate, and networks are easily established, rapidly reconfigured, and, most importantly, easily maintained on the move. SCR provides secure voice communica- tion and supports limited datainformation exchange. MAGTF SCR equipment is fielded in many configurations and includes hand-held, manpack, vehicle-mounted, bench-mounted, and shel- tered radios. These radios operate in simplex and half-duplex modes. The most widely employed tactical radios provide inte- grated communications security (COMSEC) and jam resistance through frequency hopping.


Tactical SCRs operate in the threemilitary radio frequency bands
(high frequency [HF], very high frequency [VHF], and ultrahigh frequency [UHF]). In the HF band, SCR can support long-range communications, albeit at the expense of mobility. SCR in the VHF and UHF bands is normally limited to line of sight. SCR satellite communications (SATCOM) provide mobility, flexibili- ty, and ease of operation with unlimited range. Limitations ofSCR include susceptibility to enemy electronic warfare; cosite, footprint, terrain, and atmospheric interference; the requirement for close coordination and detailed planning; a need for common timing, frequency, and equipment; and limited spectrum avail- ability. The latter is particularly critical for SATCOM.

Of all the variables affecting single-channel radio communica- tions, the one factorthat an operator has the most control over is the antenna. With the right antenna, an operator can change a marginal net into a reliable net. Marine Corps Reference Publica- tion (MCRP) 6-22D, Antenna Handbook, gives operators the knowledge to properly select and employ antennas to provide the strongest possible signal at the receiving station of the circuit.

MCRP 6-22D builds on the doctrinal...