Dear Topbanders, I am planning my next move with the beverages and I would like
to hear your opinions about 2 areas.
Looking at the pattern response for beverages in for example ON4UN book, I
found that If I install 4 x 600 feet or 5 x 900 feet beverages, I should cover
360 degress with deeps of no more than 3 or 4 db respect the main lobe.
Taking into account that most people will not work extra without any benefit my
first question is:
1 - Why many DXers and contester install 10 or 12 direction beverages ?? What
am I seriously missing with my simple analysis?
2 - 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 replaced the mA with
the input of a transceive)
Variation was about 10db from begining to end of 900 feet. Curiously the 600
feet one gave aprox same result but I recognize S meter granularity was not
good.
b) I disconnected termination resistance and the signal stregth with or without
it was 8db. 900 feet Bev gives about 20db F/B in broacast band
Many thanks in advance to all
_______________________________________________
Topband reflector - topband@contesting.com
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