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#1
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Denny wrote:
Way to go Richard... That'll teach im to post anything about antennas... John, my immediate inclination without giving it any hard thought would be to have them cross near the center lines as opposed to ends... Now, I don't know about this using a balun as a transmatch... I personally would not do that, but you may be perfectly happy with it - especially if you only operate on one portion of the band and get the antenna or feedline tuned so you have minimal reactance... BTW, you will love the folded dipoles, they are just happy antennas... denny / k8do Thanks, Denny You know, I used the folded dipole first, but I think the G5RV outperforms it, but not on 30M and not on 17M, two bands I have interest in. Frankly my own interest in placement, while not trivial, is not that important...I just missed antenna threads in the group. John AB8O |
#2
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jawod wrote:
You know, I used the folded dipole first, but I think the G5RV outperforms it, but not on 30M and not on 17M, ... http://www.vk1od.net/G5RV/ shows why the standard G5RV doesn't work well on 30m, 17m, and 10m. If you want 30m operation, shorten the matching section to about 20.5 feet. If you want 17m operation, lengthen the matching section to about 37 feet. EZNEC says that will give you a 50 ohm SWR of ~3:1 on 30m and ~2:1 on 17m. When I was running a G5RV, I had pluggable lengths of ladder-line so I could vary the length of the matching section from 20 feet to 36 feet for good performance on all HF bands. Somebody (I forget who) used remote controlled relays to accomplish the "tuning". -- 73, Cecil http://www.w5dxp.com |
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