Download Antenna Toolkit (2nd Edition) by Joseph J. Carr PDF

By Joseph J. Carr

The textual content makes point out of a complement CD-ROM containing instruments which are utilized in calculating antenna parameters. This CD-ROM used to be no longer allotted with the digital model of the textual content and isn't incorporated here.

Joe Carr has supplied radio amateurs and short-wave listeners with the definitive layout advisor for sending and receiving radio indications with Antenna Toolkit second edition.

the recent version has been revised to incorporate additional circumstances of propagation, extra antennas and likewise new chapters - Small Loop Antennas (a subject of substantial curiosity, which has been the topic of a lot fresh debate within the beginner radio press); and Yagi Beam Antennas (widely used at HF and VHF).

Joe Carr's services within the region of antenna layout is known. Antenna designers, even if hobbyist or technician, should be guaranteed they want glance no additional than Antenna Toolkit for the full advisor to realizing the practicalities of utilizing and designing antennas this present day.

A whole answer for antenna layout in a single package.

The definitive advisor to antenna layout for radio amateurs and short-wave listeners.

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Extra info for Antenna Toolkit (2nd Edition)

Example text

Even if you attempt to straighten it out, it will not come anywhere near the original state. Although ordinary copper wire also possesses this attribute, it is not nearly as severe as with copper-clad steel-core wire, and can often be worked into a negligible size when it does occur. ). WIRE, CONNECTION, GROUNDS, AND ALL THAT 51 One fair question regarding copper-clad steel-core wire concerns its resistivity. After all, any basic electrical text tells us that the cross-sectional area of the wire sets the current-carrying capacity.

Transmission lines come in a bewildering variety of species, but there are only a few basic types: parallel open lead, twin-lead, and coaxial cable are the main types that we need to consider. 4 shows all of these varieties. 4A. It consists of a pair of wires, run parallel to each other, and separated by a constant space. Insulating spacers (made of ceramic, nylon, or some other material) are used in practical parallel open line to keep the distance between the conductors constant. The characteristic impedance of open line is determined by the diameter (d) of the conductors and the spacing (s) between them.

First, though, let us talk a little bit about antenna safety. It is difficult to say too much about this topic. Indeed, I mention it elsewhere in this book as well as here. 18 ANTENNA BASICS 41 antenna erection can be dangerous if you do not follow certain precautions. Do it right, and the risk is mitigated and the job can be quite safe. Safety first! Before dealing with the radio and performance issues, let us first deal with safety matters – you do not want to be hurt either during installation, or during the next wind storm.

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Antenna Toolkit (2nd Edition) by Joseph J. Carr

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