[Antennas] B&W AC 1.8-30 vs BWD terminated antennas?

Sat Sep 4 21:03:38 EDT 2004

Jay,
 I used one of the T2FD type antennas when I worked in Algeria.
 I was not in the least bit impressed. I took it down and put up a 
parallel fed dual frequency inverted vee dipole and it worked considerably better.
 In fact, currently...while waiting to get my tower up, I am using a
parallel fed, 20, 40 and 80 inverted vee dipole right now. I have instant band change
using the auto tuner in the MP.
 The antenna can certainly be tuned to have instant bandswitching without
using a tuner. 
 The very best part of it is price...virtually nothing for my antenna and big bucks for the B&W stuff.
 Just my opinion.
73, Tom K5IID
"J. Coote" <TSCM at jps.net> wrote:
Has anyone run an efficiency comparison between the Barker and Williamson
BWD ninety-foot terminated folded dipole or "T2FD" antenna, versus their
similar AC 1.8-30 terminated end-fed vee?
A few thoughts:
I am guessing that the vee encloses more space and could be more efficient
in that regard.
Both antennas use similar baluns and load resistors.
Both are loops if you consider the counterpoise wire in the AC 1.8-30 going
from one leg of the balun to one leg of the resistor.
I'm aware that these antennas are a few DB less efficient in the 2 and 4 MHz
bands than
a resonant wire- but my application is instant frequency change, NVIS and
not QRP or DX.
Thanks,
Jay
AAR9QM/W6CJ
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September 11, 2001
We can never, never forget !
If we aren't free and alive, 
absolutely nothing else matters !

Tom Horton K5IID
Hillsboro, TX
USA-CA All Counties 661---DXCC---5 BAND DXCC
WPX HONOR ROLL---5 BAND WAC---WAZ
Finally back home in Texas after all these years! 
"E" sorter for the ARRL W5 QSL bureau