[TowerTalk] Ice Bridges

Greg Fox fox@obsolete.org
Thu, 20 Jul 2000 11:03:01 -0500 (EST)



Hi there, 

While working around large broadcast and celluar towers I've noticed
one signifigant feature on these towers which the amateur equivelents
don't have -- ice bridges. 

An ice bridge consists of a grating held up by two to three inch steel
piping. The purpose is to protect the hardline/waveguide runs from the 
falling ice which is expected to break off the tower. More or less it 
creates a "bridge" from the tower to the shelter/cabinets which the 
lines run underneath of, and are protected. 

Is this important for an amateur radio installation? 

In most cases the towers are much smaller, the transmission line isn't
in the 1 5/8" - 2" range, and there are not SHP microwave dishes atop. 
However, I still think it might be a issue with all the alluminum up 
in the air, due to the nature of HF beams. 

Any opionons/stories?


73s de Greg/KE9R


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