Imported from USA
The fifth edition features new and updated material. Highlights include...
...a thoroughly revised discussion of receiving antennas. You ll discover how to greatly enhance their operational
bandwidth. In addition, low-signal transformers for Beverages and other receive-only antennas are analyzed in great
detail, along with effective common-mode filters.
...a new examination of phased arrays, with new concepts such as the hybrid-fed 4-square array and opposite-voltage feed
system. This is a must-read for every serious antenna builder!
...dozens of new propagation maps based on DX Atlas, as well as an in-depth analysis of the influence of sunspot cycles
on 160-meter ducting.
...a new discussion of cutting edge technology including Software Defined Radio and the revolutionary LP-500 Digital