What is the transmission range of the unit?
This depends on a number of things including the terrain, but mainly it depends on the antenna used on the rescue team’s receiver. The standard antenna on an UHF CB, FRS or PMR radio will give approximately 1000 yds (1km) range on the ground in light forest, and around 4-8 ml (6-12km) from the air. Using a high gain directional antenna, as is used with direction finding equipment the range is generally extended by a factor of 2 or 3.
