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Spiderbeam 20-17-15m HD
Spiderbeam 20-17-15m HD

▶Currently sold out (available again in september)





Nr. of Elements




Forward Gain
at 10m height [dBi]
Front/Back ratio [dB]


< 1.5
< 1.5
< 1.7
Max. Power
2000 W / balun is included
50 Ohms / single feedline
Boom length
10m (33 ft)
Turning Radius
5m (16 ft)
Wind load area
0.35 sq-m (3.8 sq-ft)
10.7kg (23 lbs)
Transport Size
120x27x18cm (47x11x7 inch)

Download the full technical data sheet here.
Download the constructionguide here.
Download a complete kit parts list here.

The Heavy Duty Spiderbeam is a specially reinforced version, optimized for permanent installation at home (see chapter 4 of our construction guide PDF). Doubling the wall thickness of the aluminium and fiberglass parts added a lot of extra ruggedness to the design, making it strong enough to permanently survive severe weather conditions for many years. All parts are made from high quality materials resistant to weather, UV rays and corrosion.
The well proven electrical concept remains unchanged: 3 monobanders are interlaced on one boom, forming a highly efficient 3-band yagi. At 10.7kg this full size beam is still a lightweight, compared to many other permanent yagis in the same performance class. You will find suitable aluminium masts here.

This 3-band version is an excellent choice for the low sunspot years, when 12m and 10m might be closed most of the time. The performance on 17m is enhanced by integrating an additional director element.

Putting together this antenna kit will be a fun and educational project. It contains all the necessary parts to make a 100% complete antenna, as described in the construction guide. Nothing beats the satisfaction of cracking pile-ups with an antenna you built with your own hands!

Welcome aboard. Over 700 spiderbeams are already installed worldwide.
Get yours today and become a happy Spiderbeam fan..

458,00 EUR incl. VAT
384,87 EUR export price - outside Europe *

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