Jim Lux wrote:
Buck wrote:
This is an interesting antenna. It is a mobile stealth magnetic loop
antenna.
http://stealth.ae/plugins/custompage...categories=136
I watched the video and checked out the details. The antenna is
basically a loop with the roof of the car (the bottom of the luggage
rack) as the ground side of the loop, the antenna goes up, folds over
the top and back down to the other side of the roof where it feeds
thru a high voltage vacuum variable capacitor back to ground.
Actually, at 150W, it might not be using a vacuum variable, just a
suitable air variable with big spacing. Electrically, this is much the
same as the AEA isoloop or MFJ-1782 type antenna. The ARRL antenna book
has a whole chapter on them, generically.