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Article #9483Re: Car ground for mobile CB antenna
From: Tad Cook
Date: Mon, 14 Jan 1991 06:13
Date: Mon, 14 Jan 1991 06:13
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In article <61302@brunix.UUCP>, hleaves@ruby.vcu.edu (EAVES,HUGH) writes: > I always seem to get great standing wave ratio's for my car's CB antenna > (1.2-1.7 range). How does the car act as such a good ground for the antenna? > From what I've been reading here, the ground plane has to be tuned or very > large. My car certainly isn't 38 feet across! 38 feet? That is over one full wavelength at CB frequencies! Considering that a quarter wave at 11 meters is only about 8 and a half feet, it is not surprising that the car body would provide a reasonable ground for the antenna to work against. I run a mobile station on the 20 mtr ham band, and get great results, although the same size antenna would be more efficient on 11 mtrs. Tad Cook Seattle, WA Packet: KT7H @ N7HFZ.WA.USA.NA Phone: 206/527-4089 MCI Mail: 3288544 Telex: 6503288544 MCI UW USENET:...uw-beaver!sumax!amc-gw!ssc!tad or, tad@ssc.UUCP
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!pilchuck!ssc!tad From: tad@ssc.UUCP (Tad Cook) Newsgroups: sci.electronics Subject: Re: Car ground for mobile CB antenna Summary: ground plane Message-ID: <778@ssc.UUCP> Date: 14 Jan 91 06:13:10 GMT References: <61302@brunix.UUCP> Organization: very little Lines: 25