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Total 5 documents matching your query.

1. [TowerTalk] short mobile antenna matching (score: 1): Author: John King <k5pgw@yahoo.com>; Date: Sun, 7 Jul 2013 20:38:31 -0700 (PDT); I am mounting a KW40 11/10 meter antenna on the rear of my 40 ft. diesel pusher motor coach. In case you are not familiar with the KW40 it is a center loaded short antenna with a 3KW + rated coil by; /archives//html/Towertalk/2013-07/msg00089.html (8,406 bytes)
2. Re: [TowerTalk] short mobile antenna matching (score: 1): Author: K8RI <K8RI-on-TowerTalk@tm.net>; Date: Mon, 08 Jul 2013 00:29:08 -0400; My Predator screwdriver, mounted on the front of the Coach, works very well but the 3 inch diameter coil doesn't want to hit 10 meters, thus the attempt to use the KW40 on the rear. There is no satis; /archives//html/Towertalk/2013-07/msg00091.html (7,558 bytes)
3. Re: [TowerTalk] short mobile antenna matching (score: 1): Author: "Patrick Greenlee" <patrick_g@windstream.net>; Date: Mon, 8 Jul 2013 06:26:24 -0500; How about adding a counterpoise? Ditto (sort of...) You have some steel structure; axles, springs, engine, transmission, frame, A/C in basement and so forth. Bond it all together. Add some copper scr; /archives//html/Towertalk/2013-07/msg00092.html (8,497 bytes)
4. Re: [TowerTalk] short mobile antenna matching (score: 1): Author: TexasRF@aol.com; Date: Mon, 8 Jul 2013 07:52:28 -0400 (EDT); John, I have no direct experience with your particular matching problem but have a couple of comments. We all assume that matching of short vertical radiators requires an impedance step up to match 5; /archives//html/Towertalk/2013-07/msg00093.html (9,639 bytes)
5. Re: [TowerTalk] short mobile antenna matching (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Mon, 08 Jul 2013 08:27:20 -0700; Yes, I agree. But the issue is more a matter of radiation efficiency than matching. The coax is not long enough for the loss to be an issue, even with significant mismatch. I've always found a mobile; /archives//html/Towertalk/2013-07/msg00107.html (9,706 bytes)

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