Re: Topband: W8ji ATR-10 design 160M?

2013-10-16 Thread N4XM Paul D. Schrader
Jim, I did not make the comments you said I made below. And the XMATCH Antenna Tuner is NOT a "T" match. It is a patented circuit. This unique circuit is a United States Patent. And see http://n4xm.myiglou.com Paul N4XM At 12:56 PM 10/8/2013 -0500, you wrote: >Tom W8JI made some measurement

Re: Topband: W8ji ATR-10 design 160M?

2013-10-16 Thread Pete Smith N4ZR
And for more info, send him $3. 73, Pete N4ZR Check out the Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com. For spots, please go to your favorite ARC V6 or VE7CC DX cluster node. On 10/16/2013 11:01 AM, N4XM Paul D. Schrader wrote: Jim, I did not make th

Re: Topband: W8ji ATR-10 design 160M?

2013-10-16 Thread Tom W8JI
Respectfully, the X match is nothing but a common T-match with a fixed capacitor in one leg. In a normal T-match, operating Q can be varied over a wide range by adjusting L/C ratios. By restricting range of one leg, operating Q range is limited. So it actually **is** a T match, it just has tw

Re: Topband: W8ji ATR-10 design 160M?

2013-10-16 Thread Jim Garland
As Tom notes, the widest possible matching range for a T-Network is with two adjustable capacitors (and, presumably, a variable inductor, typically a roller inductor). Constraining any one of these parameters reduces the available matching range. Further, Tom correctly observes that many hams damag

Re: Topband: W8ji ATR-10 design 160M?

2013-10-16 Thread Tom W8JI
As Tom notes, the widest possible matching range for a T-Network is with two adjustable capacitors (and, presumably, a variable inductor, typically a roller inductor). Constraining any one of these parameters reduces the available matching range. Further, Tom correctly observes that many hams dam