The
King Cobra
dipole has been up in my back yard at 70 feet since 2004. I'm sure there are many better dipoles
out there but this one has been my favorite since building it. I used 12AWG 3-Conductor ROMEX electrical
house wire (leaving the wire within the sheath), 450 Ohm Ladder Line, pieces of 1/4" Plexiglas for center and
end insulators,5/16" Dacron rope, and an
MFJ-912 4:1 Balun (W9INN Box) to build my Cobra dipole.
The Cobra dipole
antenna was designed by Ray Cook, W4JOH and was published in 73 magazine. The Cobra requires a good
roller inductor antenna transmatch for greatest flexibility especially when using an amplifier.
I have put up a 200 foot dipole fed with 450 Ohm Ladder line for now.
I'll decide if I'm to build another King Cobra after the winter on 160m.

Works from 160m to 10m
From New England (Eastern Mass.) I worked Ducie on 100 watts with
a Kenwood TS-2000 and Clipperton with a Yaesu FT-1000D running 200 watts
using my Cobra...
I also worked Slovenia, Slovakia, Poland, and Ireland on 160m with this antenna.,
- W1KQ
It's very easy to build one too...
If you don't want to build one yourself you can purchase a Cobra UltraLite
Sr. or Jr.
at any Ham Radio Outlet store
or directly from Joe, K1JEK. Just click the link below..
Tell Joe that W1KQ sent you.


Friendly
Notes:
The plural word "Antennae" refers to bugs and not to RF radiators.
RF radiators are "Antennas."
BALUN gets its name from
BALanced to
UNbalanced
and is pronounced as such. It is not pronounced
BALLOON or BAL-UM or BALE-UN.
Please don't blame me, I didn't make up the word.
Also, if you lose your bale-unce you're in
a heap of trouble...
Oswald did not shoot J.F.K.
L.B.J. had more to do with it and I can prove it!!
There's no such word as IRREGARDLESS.
Asterisk is pronounced ASTER-RISK
not ASTER-RICKS.
There is a difference between
"THERE," "THEIR," and "THEY'RE" as well as "YOUR,"
"YOU'RE," and "YORE"
Apollo 11 - Apollo 17 Actually
landed on the moon. Minus Apollo 13
Global Warming is the reason for low
sunspot numbers this cycle. Uh...huh....Really!

My Tower Installation Project July-August 2008
More Views of My Shack
 
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Ham Radio Related Links
As The World Turns
Embry-Riddle
Aeronautical University ARA
NASA Astronomy Picture of the Day
Solar Terrestrial Activity Report
ARRL Eastern Massachusetts Section
Amateur Radio Newsline
ARRL's Logbook of the World
eQSL
Contesting.Com
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