Hi Guys,
TT is tremendous- what a wonderful wealth of information is shared!
I am NOT trying to stir up trouble here as I am very thankful for modeling
software like EZNEC. But I'm hoping that the accuracy of modeling software
will continue to improve.
RadioIR (below) states how EZNEC is not always accurate.
A few weeks ago, I posted an e-mail on how in dozens of side by side
comparisons my single 40-m. 1/4 wave vertical near saltwater worked at least
as
well, if not better, than a new Cushcraft XM-240 Shorty-Forty at 90' in all
directions the vertical looks over saltwater: Europe, Africa, and South
America.
Computer modeling indicated that the Shorty Forty should have about a 10dB
advantage over the vertical with saltwater. (and the vertical has a minimal
radial system: two 1/4 radials and a single 2" copper strap saltwater)
My hope is that more actual side by side antenna comparison information can
be used to improve modeling accuracy.
73,
Dick- K9OM
_RadioIR@charter.net_ (mailto:RadioIR@charter.net) writes:
W8JI said: "I virtually never use the high dipole /(the 300ft one)/.
The 220 foot vertical or the 1/4 wave verticals beat it at almost any
distance, close or far. Only on very rare occasions is the 300 foot high
dipole equal or better at ANY distance. "
-end quote
This is not verifiable with EZNEC, but I do trust Tom's judgment at
evaluating antennas. EZNEC says the high dipole should be better at all
distances (in the dipoles best direction).
Also I was expecting that the 3 element 160 Yagi of OH0X to be louder
than it is. It doesn't seem much louder that the other OH stations. It
puts out a good signal but I'll bet a four square would give it a run
for the money (just a feeling). Of course EZNEC would not agree to
that. EZNEC shows the Yagi should win by a bunch of dBs.
**************Feeling the pinch at the grocery store? Make dinner for $10 or
less. (http://food.aol.com/frugal-feasts?ncid=emlcntusfood00000001)
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