TowerTalkians:
In order to keep up-to-date with the most accurate method of determining
antenna wind surface area, we will be adding the following new
specifications to our antenna instruction manuals, catalog and web page
information:
Antenna Projected Area* in sq. ft.
Model (elements) (boom)
TH11DX 18.0 4.1
LP-1009AA 17.1 4.5
TH7DX 11.5 4.1
TH5MK2 10.1 3.2
DB1217 10.0 2.4
Explorer-14 9.8 2.4
TH3Mk4 6.9 2.4
TH3jr 4.7 1.3
TH2Mk3 4.7 1.0
205CA 11.5 5.8
204BA 9.3 4.3
203BA 7.3 2.7
155CA 6.2 4.3
153BA 3.8 2.1
105CA 4.1 4.1
103BA 2.6 0.8
66DX 2.1 4.1
* Projected Area is the actual (flat) projected area of either the elements
or boom (highest value) without any shape factor included. This area may
be used with EIA / TIA-222-D and later versions and with the UBC formulas
to determine tower and mast loading. On HF beams, the element area is
usually higher. On VHF/UHF beams, the boom area is usually higher. When
stacking HF and VHF beams, use the element area of all beams at their
attachment points to determine loading at zero degrees to the boom axis.
Antennas not listed above will be analyzed and added in a few days.
73 Roger WB0DGF
Telex Communications, Inc.
http://www.hy-gain.com
--
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|