On Thu, 09 Aug 2007 16:13:28 -0700, Jim Lux wrote:
David G. Nagel wrote:
Rick (W-A-one-R-K-T) wrote:
snip
Or those nice inexpensive Caddock non-inductive resistors available from
Mouser for about $2 each for the low power versions, up to $10 each for
the higher power ones.
http://www.mouser.com/catalog/631/552.pdf
http://www.caddock.com/Online_catalo...000_Series.pdf
available up to 100W rating (assuming bolted to an appropriate heatsink).
I'd string together a bunch of an appropriate resistance, either series or
parallel, your preference.
I used one of those resistors (sold as motor shunt resistors) for my
antenna and constructed a small 5" by 5" heat sink that flys with the
antenna. The commercial balun, ($80USD) which was a bit heavy to mount on
the antenna was mounted on a fence post underneath the antenna. I
constructed some 450ohm balanced line to go between the balun and antenna.
pics:
http://vambo.org/pictures/antenna/
This antenna has been the greatest thing I've ever done to improve my
Hobie. This antenna is about 8 years old and has survived a move to a new
QTH.