Antenna physical size
Dave Heil wrote:
Art Unwin wrote:
OK mike one last time.
Make a former to wind apon.
Set it up vertically and secure so that it doesn't fall over.
Get two reels of insulated wire preferbly pre wound paired
wire on each reel. Join the paired wires
Put the joint at the rear of the former with one reel to the left
and one reel to the right.
Wnd one wire clockwise and then wind counterclockwise the
wire from the other reel. Repeat these two functions making
sure the overlapped wires stay parallel with each other.
When you have completed the length of the spool then join
one wire to another wire from the opposite reel. You now have two
wires in your hands
one from each of the reels. These two wires are what you connect to
the transmission line..
Suggestions for the former. Make two cross arrangements using 1/2 inch
plastic piping.
At each of the 8 ends place a tee connection. Four pipes around a foot
long can the join the two sections,
Use tees instead of elbows so the antenna is easier to mount.
If you want it to be all frequencie:
Cut a 1/2 inch plastic pipe in half,' length wise.
Make wire loops and fit them over the cut pipe and solder them tight.
Place a quick start threaded rod inside the cut pipe with a motor at
one end.
Make a electrical wiper to place on the quick start thread to make
electrical
connection to the loops as the motor turns.
Connect a meter to one of the start wires and disconnect it from the
joint.
Place a sowing needle on the other end of the instrument and pierce
the
wires in sequence until one
gets to the coax connection points marking each wire that is
connected to the meter.
Connect the marked wires to the loop that were made sp electrical
contact
can be made to the threaded shaft
Connect the shaft to one of the wires that consists of the feed
points.
Rejoin the wire connections at the start point so that now you have a
complete electrical
circuit starting at the feed points
Place assembly anywhere and apply power and have a qso.
Now will somebody that is savvy with computors do that excercise that
I suggested
with regard to tipped radiators and report on it before you make this
antenna or start
tilting towers around ten degrees sinc the change is not worth it when
calculating total gain?
Well, there it is. I'm going to scrounge a "former" and a "sowing"
needle and get right to work.
Dave K8MN
Don't forget an 'apon'....
Dave WD9BDZ
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