[TowerTalk] Vertical on metal building

Terry Conboy n6ry at arrl.net
Sun Oct 3 13:25:27 EDT 2004


At 11:36 AM 2004-10-02, "Jim Miller WB5OXQ" <wb5oxq at grandecom.net> wrote:
>There is nothing electrical on the roof.  the AC units are on the ground.

Sounds good.

>There is this 190' tower beside the building that is open at the top and the
>only transmitter antenna is a paging system on 462.925mhz and a 2 way at
>153.050.  There are 6 guy wires at the top pn a torque arm that are 190'
>long each and the far end of the guys are attached to steel poles 14' high
>to allow trucks to drive below the wires and not hit them.  Of course there
>are 3 more sets of guys lower down the tower.

The presence of the tower and guys may introduce pattern distortion for a 
nearby roof mounted vertical.  Some modeling with EZNEC or other program 
should give you an idea if the effect is tolerable.

73, Terry


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