You might also compare your 44' doublet by itself and with a 25'
extension on one side, if you have room. That makes it into an OCF, and
the impedance swings will be less extreme than a center-fed 40m dipole,
particularly on 20m. I had a 44' doublet up and found improved
performance. The last 5 feet of mine point straight down. It is an easy
change to do and undo.
Leigh/WA5ZNU
On Sun, 22 Oct 2006 6:43 am, David Dietrich wrote:
Whoops! I should have added this when I was composing last night. I
have the KAT1 tuner
installed. At the present, my four band module is for 40, 30, 20, &
15. I plan on at least
operating on 40 & 20 for sure, and possibly 15 if the SWR isn't too
bad. Original message below
for reference:
Howdy Everyone,
I am seriously considering the purchase & construction of a BL2
switched balun so I can construct
a lighter dipole antenna for field use than the dipole I have been
using with my K1-4 (#2051). I
am planning on taking the K1 down to TX over Christmas and I don't want
to take the heavier dipole
I have with me like I did this past summer. It's rather bulky and
takes up valuable suitcase
space.
Here is my plan: Construct a 20 and/or 40 meter 1/2 wave dipole and
feed it using standard TV
twin-lead as my feedline (found in any hardware/home improvement
store), and some #18 wire (I have
some on hand). Since the antenna would be balanced, I would attach the
twin-lead to the balun and
the balun to the back of my K1. I am thinking that this design would
make for a good performing,
lightweight antenna that will be easier to pack & set up.
Questions:
1. Will the BL2 work well with TV twin-lead antenna I am going to
build? There's no sense in
buying it if it won't work with this antenna.
2. What kind of luck have those of you who have built it had with
fitting it into some sort of
plastic or metal enclosure? What works and what won't?
3. Will I need to do any sort of grounding with this?
I'd really like responses from those who either (A) own one OR (B) do a
lot of antenna homebrewing
& experimentation.
Many thanks,
David
KC9EHQ
K1-4 #2051
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