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elevating the antenna, it should be about 5 meters or more away from the tower or any other large metallic structure. Keith WD5DXL -----Original Message----- From: Keith Dutson [mailto:kjdutson@earthlink.net] Sent: Friday, November 07, 2003 10:01 AM To: 'Kjeld Holm'; force12talk@qth.com Subject: RE: [Force 12 Talk] RE: Sigma 40XK I believe your antenna is too close to the ground to make meaningful SWR measurements. Raise it to at least 5 meters and try again. Keith WD5DXL -----Original Message----- From: Kjeld Holm [mailto:kh@kh-translation.dk] Sent: Friday, November 07, 2003 5:07 AM To: force12talk@qth.com Subject: [Force 12 Talk] RE: Sigma 40XK Hello All, I just installed the Sigma 40XK on a wooden structure on my lawn close to a brick house and with the lower T-bar 7 feet (2 meter) up for the purpose of been able to walk on the lawn below it. The antenna is also just about 7 feet from a 18 feet tower (metal) with 4 x 6 elm for 2 meters. On 20 meters I have SWR 1:2.5 at the bottom of the band slowly rising to 1:2.8 at the upper band limit. Is this what I have to expect being so close to other structures? Or do you have any suggestions? On 40 meters I spend some time fidling wiht the coils but could not get any resonable results that's why I resort to 20 meters. PS The manual says SWR 1:1.3 for 20 meters. Vy 73 OZ1CCM Kjeld -------------------------------------------- Force12Talk mailing list provided as a service by Force 12 Antennas, Inc. Force12 Web Site: http://www.force12inc.com To Submit Message to the List: Force12Talk@qth.com To unsubscribe and view the Message Archive: see http://qth.com/force12/list For problems with the list: contact force12@qth.com -------------------------------------------- Force12Talk mailing list provided as a service by Force 12 Antennas, Inc. Force12 Web Site: http://www.force12inc.com To Submit Message to the List: Force12Talk@qth.com To unsubscribe and view the Message Archive: see http://qth.com/force12/list For problems with the list: contact force12@qth.com -------------------------------------------- Force12Talk mailing list provided as a service by Force 12 Antennas, Inc. Force12 Web Site: http://www.force12inc.com To Submit Message to the List: Force12Talk@qth.com To unsubscribe and view the Message Archive: see http://qth.com/force12/list For problems with the list: contact force12@qth.com |
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