Makes sense. The lower the return-loss, the deeper the null! 73, Charlie, K4OTV
-----Original Message----- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Jim Brown Sent: Friday, February 14, 2014 4:17 PM To: topband@contesting.com Subject: Re: Topband: Palomar R-X Noise Bridge 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 _________________ Topband Reflector Archives - http://www.contesting.com/_topband
