By R. Dean Straw
All of the details you want to layout your personal entire antenna system.
Since the 1st version in September 1939, radio amateurs engineers have grew to become to The ARRL Antenna ebook because the resource of present antenna idea and a wealth of useful how-to development tasks. Use this publication to find even the main uncomplicated antenna designs-- twine and loop antennas, verticals, and Yagis--and for complex antenna concept and functions. a number of the antennas during this version gain at once from advances in refined desktop modeling.
This twenty first variation has been generally revised to incorporate details you should use to construct hugely optimized or really expert antennas. The ebook contains new content material on close to Vertical prevalence Skywave (NVIS) suggestions, phased arrays, S-parameters as utilized in glossy vector community analyzers (VNA), Beverage receiving antennas, cellular screwdriver antennas, ionospheric area-coverage maps, and much...much more.
Fully searchable CD-ROM included!
Bundled with this booklet is a CD-ROM containing The ARRL Antenna booklet in its entirety, utilizing the preferred AdobeÂ® ReaderÂ® software program for MicrosoftÂ® WindowsÂ® and MacintoshÂ® platforms. View, seek and print from the whole textual content, together with photos, photos, drawings...everything!
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Additional resources for ARRL Antenna Handbook 19th ed
It does mean, however, that hams should be aware of the potential for exposure from their stations, and take whatever reasonable steps they can take to minimize their own exposure and the exposure of those around them. Safe Exposure Levels How much EM energy is safe? Scientists and regulators have devoted a great deal of effort to deciding upon safe RFexposure limits. This is a very complex problem, involving difficult public health and economic considerations. The recommended safe levels have been revised downward several times over the years —and not all scientific bodies agree on this question even today.
In older houses, an ac ground may have to be installed by a qualified electrician. The ac ground must be available for the plug-in transient suppressor to function properly. The ac ground of the receptacle should be attached to the station ground bus, and the plug-in receptacle should be installed on the ground panel behind the radio equipment. Safety First 1-13 Antenna Rotators Antenna rotators can be protected by plugging the control box into a protected ac power source and adding protection to the control lines to the antenna rotator.
14) Retain tube type equipment and spare components; keep them in good working order. 15) Do not rely on a microprocessor to control the station after an EMP event. Be able to operate without microprocessor control. The recommendations contained in this section were developed with low cost in mind; they are not intended to cover all possible combinations of equipment and installation methods found in the amateur community. Amateurs should examine their own requirements and use this report as a guideline in providing protection for the equipment.
ARRL Antenna Handbook 19th ed by R. Dean Straw