Why is 10' to 15' of coax what you would want if using a tuner in the shack? I know about loses in really long runs, but why 10 to 15 feet? Thanks asking to learn not criticizing. Gerald
> On Feb 17, 2016, at 3:31 PM, Jim Rodenkirch <[email protected]> wrote: > > Gary - depends on your antenna and how you feed it. > > If you intend to feed a multi-band antenna with open wire line, you'll need > some sort of tuner at the point where you transition from open wire to coax: > > - if you plan on doing that out near the base of your antenna (the most > efficient spot) then save your > money and purchase an auto tuner, e.g., an LDG Z11 ProII, and place it > at the point where the open > wire line transitions to coaxial feed. > - if you plan on doing that inside the shack and can keep the coaxial run > short, the internal auto tuner > would work, albeit you could employ an LDG Z11 ProII there as well. > > If you plan on feeding any multi band antenna with coax of a length longer > than 10' to 15' an auto tuner inside the shack isn't worth much -- place an > LDG Z11 ProII style auto tuner at the base of the antenna, 'tween the > coaxial fee line and the antenna feed point and call it a day. > > If you plan on taking the K3S on portable trips....its auto tuner wud be 'da > way to go, as long as you keep coaxial runs 'tween the K3S and the antenna > feed point short...."short" means < 10' to 15' or so. > > 72 de Jim R. K9JWV > > > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/Amp-or-tuner-Chicken-or-Egg-tp7614243p7614247.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
