<P> Disguised cell sites sometimes can be introduced into environments that require a low - impact visual outcome, by being made to look like trees, chimneys or other common structures . </P> <P> A mast radiator is a radio tower or mast in which the whole structure works as an antenna . It is used frequently as a transmitting antenna for long or medium wave broadcasting . </P> <P> Structurally, the only difference is that a mast radiator may be supported on an insulator at its base . In the case of a tower, there will be one insulator supporting each leg . </P> <P> A special form of the radio tower is the telescopic mast . These can be erected very quickly . Telescopic masts are used predominantly in setting up temporary radio links for reporting on major news events, and for temporary communications in emergencies . They are also used in tactical military networks . They can save money by needing to withstand high winds only when raised, and as such are widely used in amateur radio . </P>

How tall are the red and white towers