[TowerTalk] guying distance
Grant Saviers
grants2 at pacbell.net
Wed Dec 5 19:56:11 EST 2018
An AM radio tower only has to support the tower and its wind load.
I think marketing comes into play for the 80%. ie what practical length
guy base, #, and placement maximizes the tower antenna sq ft load
rating. If I were Tim Rohn that is what I would ask the engineers to
specify for the amateur community.
Grant KZ1W
On 12/5/2018 8:30 AM, Courtney Judd wrote:
>
> There is a commercial tower not far from me that has been up for many
> years.... an old AM unit now with some cell antennas on it. I marvel at
> it ever time I drive by wondering how it has stayed up this long. It is
> 150 ft tall with the guy wire ground spots at 50 ft from the tower....
> defies all logic but somebody way back when thought it was a good idea
> and so far so good! lol 73's Cort K4WI
>
>
> Grant Saviers <mailto:grants2 at pacbell.net>
>> Wednesday, December 05, 2018 10:17 AM
>> Except that a PE can change this with the proper analysis. Also, a
>> post plus deadman end is a way to geometrically shorten the 80%. Look
>> at commercial guyed towers and they often have a shorter guy anchor to
>> base perecent (ie steeper guy angles).
>>
>> Grant KZ1W
>>
>>
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