[Antennas] 17 Meter J-pole
Terry Conboy
n6ry at arrl.net
Fri Aug 6 13:35:10 EDT 2004
At 08:41 AM 2004-08-06, Durwydd MacTara wrote:
>Any suggestions on maximizing bandwidth on one of these beasties? i would
>like to get an swr bw of 1.5:1 for the whole band! any suggestions/ideas
>gladly welcomed!
The 17m band is 100 kHz wide which is only a 0.55% bandwidth, compared to
2.74% for the 2m band. It should be a piece of cake to make a J-pole cover
17m.
A center-fed vertical dipole for 17m using #14 wire is about 740 kHz wide
at 1.5:1 (referenced to 75 ohms). With 3/4 inch tubing, the bandwidth is
over 1 MHz.
73,
Terry
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