[Antennas] quads, antenna height and receiving signals

2002年4月16日 13:53:12 -0500

I have a 5-band qemquad antenna at 34 feet. The gemquad instructions
recommend 34 feet or 64 feet as optimal feet for installation. I am in a
small city lot so I can't go up to 64 feet, so I have the antenna right at
34 feet up. My location is SE Texas.
With this installation, there are some dx countries I just cannot hear at
all - YA, P5, S2, EP, 9N, A5 and others such as 9M2, XV and VU very poorly.
In fact, it seems like central and se \Asia is the area I have the hardest
time working.
I have been trying to study propagation and paths to see if there might be
any opening on any bands, as well as checking the solar indices, etc. but
I'm still having difficulty hearing these dx countries. I can hear lots of
US stations on the east and west coast working these countries, plus I see
lots of dx cluster spots (but not many W5s though). I am curious if a quad
antenna at 64 feet (or higher) would be able to "hear" these much better
from my location. Is there a mathematical formula for increasing
height/increasing S reading? Such as so many feet will increase a signal
from S2 to S5? I'm also curious if that part of the world is just going to
be a difficult path to my area. If so, I could maybe try to visit someone
on the coasts and work those countries, or maybe someone in the northern
states who have a different polar path than me.
I realize a quad antenna at 34 feet can only receive so much so I would be
interested to see what others might think. Certainly a tribander at 100 or
200 feet up might increase the S level of signal, but by how much? Thanks.
de ag5t
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