On 7/23/2013 9:47 PM, K8RI wrote: > but is there such an animal that will cover 160 reliably on QRO? Here's another approach, that you, as an engineer, might appreciate. http://audiosystemsgroup.com/PacificonSmithChart.pdf I replaced a lot of Ten Tec antenna tuners with coax and relay switching. 73, Jim K9YC