To: | topband@contesting.com |
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Subject: | Re: Topband: Palomar R-X Noise Bridge |
From: | Jim Brown <jim@audiosystemsgroup.com> |
Reply-to: | jim@audiosystemsgroup.com |
Date: | Fri, 14 Feb 2014 13:16:40 -0800 |
List-post: | <topband@contesting.com">mailto:topband@contesting.com> |
On 2/14/2014 10:55 AM, Carl wrote: The highest VF and lowest loss produces the deepest null but also the least deep null bandwidth due to the higher Q. Not always -- stubs made with higher Vf cables are longer, so in my experience they come out about the same for attenuation and bandwidth. The only way to get a deeper null (with the reduction in bandwidth you have noted), is to reduce the RF resistance -- this means larger diameter coax and a more robust shield, like hard line. 73, Jim K9YC _________________ Topband Reflector Archives - http://www.contesting.com/_topband |
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