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Another Antenna Question
I live in a antenna restricted community!
I have put up a somewhat stealth antenna. It is a 540 ft loop = 180 ft virtually lays on the roof and the remainder 360 ft is in my attic. I feed this with 50 ft of RG58u at the center point (6 turns of the feedline - approx 8" dia is used as a RF choke) running down to a manual tuner. The antenna in this configuration is about 1.5:1 across all the bands from 75m to 6m. I would like to operate on 160m, but the tuner doesn't cover that band, and when I try to go directly the SWR is extreme and we don't use it! My questions a 1] should I leave the antenna system alone as is? It works - but as a wire system has its limitations due to the clearance off the roof? or 2] should I purchase another antenna tuner that covers 160m - 6m. and open the LQQP and make the antenna a single 540 ft piece of wire and ground the other side? 73's |
Another Antenna Question
John Doe wrote:
I live in a antenna restricted community! I have put up a somewhat stealth antenna. It is a 540 ft loop = 180 ft virtually lays on the roof and the remainder 360 ft is in my attic. I feed this with 50 ft of RG58u at the center point (6 turns of the feedline - approx 8" dia is used as a RF choke) running down to a manual tuner. The antenna in this configuration is about 1.5:1 across all the bands from 75m to 6m. I would like to operate on 160m, but the tuner doesn't cover that band, and when I try to go directly the SWR is extreme and we don't use it! My questions a 1] should I leave the antenna system alone as is? It works - but as a wire system has its limitations due to the clearance off the roof? or 2] should I purchase another antenna tuner that covers 160m - 6m. and open the LQQP and make the antenna a single 540 ft piece of wire and ground the other side? 73's Is the perimeter of your attic really 360 ft? That's a lot of wire to stuff in an attic (with an additional 180 feet on the roof over the attic) and still resemble a loop. Why not borrow a tuner that covers 160 meters and verify that it will work before buying one? If the 540 feet is indeed a "loop" you should not have to open one end for 160 meters. Chuck ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
Another Antenna Question
Listen to Chuck!
Borrow the tuner before you buy..... If it works ok on 160....leave it alone! "chuck" wrote in message ... John Doe wrote: I live in a antenna restricted community! I have put up a somewhat stealth antenna. It is a 540 ft loop = 180 ft virtually lays on the roof and the remainder 360 ft is in my attic. I feed this with 50 ft of RG58u at the center point (6 turns of the feedline - approx 8" dia is used as a RF choke) running down to a manual tuner. The antenna in this configuration is about 1.5:1 across all the bands from 75m to 6m. I would like to operate on 160m, but the tuner doesn't cover that band, and when I try to go directly the SWR is extreme and we don't use it! My questions a 1] should I leave the antenna system alone as is? It works - but as a wire system has its limitations due to the clearance off the roof? or 2] should I purchase another antenna tuner that covers 160m - 6m. and open the LQQP and make the antenna a single 540 ft piece of wire and ground the other side? 73's Is the perimeter of your attic really 360 ft? That's a lot of wire to stuff in an attic (with an additional 180 feet on the roof over the attic) and still resemble a loop. Why not borrow a tuner that covers 160 meters and verify that it will work before buying one? If the 540 feet is indeed a "loop" you should not have to open one end for 160 meters. Chuck ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
Another Antenna Question
John Doe wrote:
The antenna in this configuration is about 1.5:1 across all the bands from 75m to 6m. Where are you measuring the SWR? -- 73, Cecil http://www.w5dxp.com |
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