Where does the idea come from that a grounded tower holding up an
inverted L is a problem. Is this just some notion that took hold?
The tower is some how an RF sponge? Hams have been doing this for
decades. Of course the tower and ground system are bonded to each
other so the tower provides a return current path as with a ground
system. How is this different from an AM broadcast skirt fed grounded
tower. I have a 50 foot mast holding my inverted L--the L wire is out
about 3 feet from it. The mast has a 15 foot stinger on top to make
it a 1/4 wave 80 m. vertical. I can ground the mast or float it above
ground when using the inverted L on 160 but I see no difference in
performance. Anyone really concerned about this could always drop a
second wire on the opposite side from the inverted L, and tie the two
together at top and bottom with the single inverted L horizontal wire
continuing on, but I doubt if it would make much difference.
73
Rob
K5UJ
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|