Many thanks Dean, Carl, Mike, Joel and the rest of you who shared your opinions
about "why so many", probably I missed the point that 3 or 4 db in directivity
loss because of deeps is much more important that I figured out and that could
make a difference in a QSO or not.
Keep in mind that without considering a very few stations, being in LU land I
am really far away from all highly ham populated zones
About my second question...... no takers ??
I repeat it here again just in case.... I modified the text of the second test
for more clarity
Is there a meaninfull or simple way to determine if at my location is worth to
go from 600 to 900 feet?
I did some measurements
a) I injected a signal into the beverage and using a current probe, I meassure
signal strength in an Smeter. (I paralelled the mA with the input of a
transceiver)
Variation was about 10db from begining to end of 900 feet. Curiously the 600
feet one gave me aprox same result but I recognize S meter granularity was not
good.
b) Listening to an AM broadcast with the back of the antenna, I disconnected
its termination resistance and the signal strength increased 8db.
Normal response from 900 feet Bev gives about 20db F/B in broacast band
Many thanks in advance to all.... Eddy, LU2DKT
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Topband reflector - topband@contesting.com
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