Floating Magnetic Loop
loop was the result of my researches to achieve a thick and
The foam spaghetti lifeguard measures in general from 150
to 160 CMS and the thickness is around 8 CMS.
antenna covers 6 / 10 / 12 and 15 meters and switching the
two ceramic capacitors in parallel with the variable capacitor
the antenna can cover 17 and 20 meters.
The first step is locate on the waste the inner thermal fax
paper plastic tube, and close the spaghetti on a loop inserting
the plastic tube on each side allowing some room on the center
to accommodate the variable capacitor.
Take some meters of coaxial cable braid, make
it flat and roll some spaced turns over the foam keeping the
coaxial braid in place with some points of hot glue.
Leave 10 CMS of braid to solder to the air
variable capacitor on the beginning and the end of the foam
Roll some layers of the aluminum shed with
controlled strength covering the spaghetti foam lifeguard.
Next take crystal adhesive tape and start
to roll over and over to make the loop antenna firmly fitted.
Finally fix the wood boom with plastic ties
to the inner fax tube. Fix the variable capacitor on the fax
plastic inner tube. Adapt the adjusting stick to the variable
capacitor aisle. Calculate the excited loop size (1/5 of the
length of the main loop) and this floating loop antenna is
ready to safe your life.
AHD ALEX (Alexandre Grimberg).