Spiderbeam was founded in the year 2000 by DF4SA, sparked by his passion for highly competitive radio contesting during portable, outdoor operations, field days, DXpeditions, etc. Simple wire antennas are quite all right, but using them to do well in a contest is pretty hard.

The spider beam is a full-size lightweight tri-bander yagi for 20-15-10m, made from fibreglass and wire. It has been specially developed as a highly efficient antenna for portable use - a DXpeditioner's dream.

Further development yielded a complete 5-band-beam (20-17-15-12-10m), a WARC version (30-17-12m), and several other configurations. Recently, monoband versions and a specially reinforced heavy-duty antenna line (optimized for permanent installation at home) have been added.

Apart from a good high-band antenna, a competitive portable contest station must have a lightweight & efficient antenna for the low bands as well. For this purpose, we have designed our professional telescopic fibreglass poles with a total height of 12m (40ft) and 18m (60ft) (NEW!). These strong poles are very well suited for carrying low-band wire GP or inverted L antennas, or any other temporary wires, like quad or delta loops and dipoles for all bands.

The secret behind the success of our portable spiderbeam yagi is its simplicity, ruggedness and a true "no compromise" design: several full-size monoband beams are interlaced on one boom with negligible interaction. While the antenna is as light as a mini beam, it maintains the gain and F/B ratio of a typical full-size tri-bander. The whole antenna weight is only 6-7kg (14 lbs), making it ideally suited for portable use. It can be carried and installed easily by a single person. A small push-up mast and a TV rotator are sufficient, saving even more weight on the total setup. The transportation length is only 1.20m (4ft).

After completion of the design phase and successful trial runs in 2001 and 2002 CQWW contests, the Spiderbeam antenna plans were released to the public. A very detailed construction guide (classic Heathkit-style step-by-step instructions) is available as a PDF document. You are most welcome to download our free construction guide and build your spider beam from scratch. Several helpful OMs have kindly translated this manual into their mother tongue, making it available in several different languages. This incredible worldwide response and cooperation turned the construction guide into a truly international open-source project, and Spiderbeam into a worldwide known trademark for affordable, high-quality fiberglass antennas of all kinds.

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