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Many of these antennas are ideal for restricted spaces and portable applications. has an extremely good site called "Antenna Magic", which is devoted to antennas of these types. Photos, performance plots, and practical experience on Reflected M beams, wire beams, quad loops, super lightweight quads, "quickie" verticals, elevated half squares, rotatable self-supporting dipoles, and even the quad is PACKED into this large and informative site. and other parts which make assembling these antennas very easy, and (of course) you can get your fiberglass here at the MGS website. Check out "table 1" on the Antenna Magic site, then look at specific antennas to determine the materials you will need. The Best Ham-radio Related Links Presenting the best ham-radio related links page on the planet! Remember that all parabolic antennas, regardless of the material used, must first and foremost, provide a precision reflecting surface. There are two types of fiberglass reflectors, each using a completely different construction technique. At present, these types can be classified according to application, although in the future we may elect to use a single technique for all applications. Currently, antennas used for terrestrial communications, i.e., point-to-point microwave, are of a one-piece construction, that is, they are formed as a single unit on a mold the same size as the finished reflector. Satellite Earth Station Antennas, on the other hand, are of a segmented construction, the segments being high-pressure compression molded. Because ESA''s can be shipped in segments, they offer significant savings for the customer in freight costs and are particularly easy to handle on site, reducing overall installation costs. Ultraviolet radiation from the sun does not affect aluminum, but in time, will affect untreated fiberglass. For this reason reflectors contain a stabilizing additive in the resin which effectively eliminates this problem. Throughout history, manufacturers have found a way to create confusion within their markets. Some do it intentionally to overcome their inability to sell their products or services based upon the merits of the product or service. Other manufactures simply ignore the fact that many users of their products have absolutely no background regarding the product and need the most fundamental information from which to build their knowledge base. The antenna industry, by use of vague terminology, has created some confusion too. Two of these areas, "factory pre-tuned" and "tunable antenna", will be explored. industrial activities include raw material extraction to manufacture glass, sodium bicarbonate, as well as sodium silicate and bicarbonate, just to mention some specialized chemicals.
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