I have one of the BWD-90 antennas up now, (at 25 feet), and use it for
local contacts on HF daily...
DX is the vertical, soon to be a beam at 55 feet.... I also use the
BWD-90 for all the WARC bands, save 30, which is the vertical.
I also have a new in the box BWD-90, (copper version, not the steel
version), as well...
Works well with a K3, as the rig is atmospheric noise limited.
73s and thanks,
Dave (NK7Z/NNR0DC)
https://www.nk7z.net
ARRL Technical Specialist
ARRL Volunteer Examiner
ARRL OOC for Oregon
On 12/5/18 3:13 PM, Rose wrote:
Was originally known as a T2FD ...
Savvy marketing by B & W ...
73 !
K0PP
On Wed, Dec 5, 2018, 16:07 Fred Jensen <k6...@foothill.net wrote:
Remember the B&W Wide-Band Folded Dipole, often found over National
Guard Armories, that's older than most of us? Very broad band in the
middle of the HF spectrum, achieved with a 200 ohm [IIRC] resistor.
While no so good for hams, NG soldiers are not known for DX'ing and it
worked great for them over perhaps 4 or 5 working frequencies. The
resistor burned half the power, and it also broadened the SWR curve
dramatically by swamping out the changing complex impedance at the
feedpoint.
Incidentally, B&W was completely up front about how the antenna achieved
such a broad band response in contrast with the claims of the "miracle
antennas" advertised in the magazines.
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
On 12/5/2018 1:19 PM, N2TK, Tony wrote:
A number of years ago, the SWR on my shunt fed tower kept getting wider
and
flatter. The feedline buried hardline with an aluminum jacket. The soil
here in upstate NY had eaten away the aluminum and produced a goo. When I
disconnected all the feedlines to the tower the shield on the 160M feed
showed a high resistance.
The shield of the other feedlines were providing the return path. So,
nice
SWR but not a very efficient antenna.
73,
N2TK, Tony
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