text: Communications
  URBAN OPERATIONS
  6-148. Communications in urbanized terrain pose special problems. Some problems are similar to those
  encountered in mountainous areas. Obstacles can block transmission paths. Pavement surfaces conduct
  electricity poorly. Commercial power lines cause electrical interfere. VHF radios are generally less
  effective in urban terrain. Due to their power output and operating frequencies, VHF radios require a LOS
  between antennas. Urban areas sometimes prohibit the establishment of a street-level LOS. HF radios
  require and rely on LOS less than VHF radios, because they use lower operating frequencies and transmit
  at higher powers. The antenna should be hidden or blended into its surroundings to prevent discovery.
  Antennas can be concealed by blending them with existing structures such as: water towers, existing
  civilian antennas, or steeples. In urban areas, the LRSU should--
  • Park radio-equipped vehicles inside buildings for cover and concealment and then remote the
  antennas outside the buildings.
  • Dismount radio equipment and install it inside buildings, ideally, in basements.
  • Conceal generators against buildings or under sheds; this also decreases noise. Provide
  adequate ventilation to prevent heat buildup.