Antenna 5 bands Sloper. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / HF antennas
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On one mast (Fig. 1) there are two antennas, one for 10 and 80 m. the second for 15, 20, 40 m, each of which is fed by a separate cable. Loops can be made either from a two-wire overhead line from a wire with a diameter of 2 mm with a distance of 100 - 150 mm, or from a CATV wire. In the latter case, it is necessary to reduce the length by a shortening factor of 0,82. In Fig. 1, trains made of different materials are conditionally shown.
The lengths of coaxial cables are not critical, but the best results are obtained by using a cable with a length of 13,65 or 27,30 m for 15, 20, 40 m and 27 m for 10 and 80 m. Despite the short radiating part, at 80 m this antenna outperforms with VS1AA from 0,5 to 1 point.
Author: V.A.Fursenko (UA6CA); Publication: cxem.net
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