Specifications

SG-231 MANUAL
SGC Inc. SGC Building, 13737 S.E. 26th St. Bellevue, WA. 98005 USA
© 11/00 SGC, Inc. P.O. Box 3526, 98009 Fax: [phone] Tel: [phone]
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Remember that when a mast comes down, you have easy access to the high voltage feed
line that may be secured to a kite antenna. Offshore power boats can use this antenna
as well, since 10-20 knot winds are almost always available when underway at sea.
4.10.2 Tactical Installations
Over the course of nearly 25 years of HF communications, SGC equipment has been
used everywhere from camel back in the desert to Antarctic expeditions. Along the
way we have collected a number of tips to get maximum system performance from
your radio system when you are operating in a tactical or disaster situation. These tips,
by the way, also apply when you go camping or are involved in amateur radio Field
Day activities:
Tactical Antenna Supports. Except for a barren desert, just about all landscapes have
structures (natural and man made) that can be used for antenna supports. All it usually
takes is several hundred feet of rope and some creativity. Here are some examples to
consider. If you wonder which structure would work best, remember the one with the
greatest height and greatest distance from grounded metal will generally give the best
performance.
Natural rock formations such as cliffs and bluffs.
Tall trees.
Water towers.
Church spires and minarets of mosques.
Rooftops of buildings—strung between.
Sign posts such as for banks and gasoline stations.
Telephone (not power) poles. There's no power line noise on telephone poles.
Railroad trestles
Highway structures: signs, overpasses, and bridges.
Flag poles at public buildings, schools, and hospitals.
Tactical Grounds And Counterpoises. Just as antenna opportunities abound, so do
ground and counterpoise opportunities to the professional eye. Some of our favorite
examples that correspond to the antennas above include:
Cross country water and petroleum transmission pipes (e.g., as it passes under a
bluff)
Long steel cables along a mountain highway (e.g., one with nearby trees)
Chain link fencing (e.g., around a water tower)
Metal lawn sprinkler piping (e.g., in a church yard)
Fire department standpipes (required in most big city building codes)
Underground metal petroleum storage tanks (e.g., at a gasoline station)