The DBJ-1: A VHF-UHF Dual-Band J-Pole
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چکیده
Two-meter antennas are small compared to those for the lower frequency bands, and the availability of repeaters on this band greatly extends the range of lightweight low power handhelds and mobile stations. One of the most popular VHF and UHF base station antennas is the J-Pole. The J-Pole has no ground radials and it is easy to construct using inexpensive materials. For its simplicity and small size, it offers excellent performance. Its radiation pattern is close to that of an “ideal” dipole because it is end fed; this results in virtually no disruption to the radiation pattern by the feed line.
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