Antenna Systems Information
(antennas, feedlines, duplexers,
circulators, isolators, calculators, etc.)
Compiled by Mike Morris WA6ILQ
Maintained by Robert Meister WA1MIK

http://www.repeater-builder.com/antenna/db/pdfs/db-about-rf-communications.pdf

http://www.repeater-builder.com/antenna/ant-sys-index.html