KX2AT2 vs T1 Tuner?
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Thinking very seriously about purchasing a KX2. I have a T1 that I had used a few years ago with another QRP rig. Obviously it will work with the KX2, but I'm wondering how it compares in performance with the internal KX2 unit. Is the T1 as quick to find a match? Is it as quick to pull in a memorized L/C combo when a band change happens? If there is a general consensus that the T1 is on an equal level with the KXAT2, I can save my $179 and use it for the KXPD2 paddle.
Comments? Jim Bennett / W6JHB Folsom, CA ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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I asked this exact question on this reflector in March, and got some good
and useful replies. You can Google for that discussion on Nabble to see those technical answers. Bottom line is that both are fine tuners. I know I could have saved some money by using the T1 I already own, but in the end I opted to order my KX2 with the KXAT2, and I'm glad I did. It works great, and it's more convenient than messing with an extra box and coax jumper. I think the choice comes down to how you want to spend your money, more than the merits of one tuner over the other, because either one will do the job very well. I will say that having the internal tuner and an internal battery makes the KX2 a real grab and go radio! I'm still using paddles that I already had, but I think the KXPD2 may be in my future... 73 de W0ZF On Tue, Jul 18, 2017 at 9:53 PM James Bennett <[hidden email]> wrote: > Thinking very seriously about purchasing a KX2. I have a T1 that I had > used a few years ago with another QRP rig. Obviously it will work with the > KX2, but I'm wondering how it compares in performance with the internal KX2 > unit. Is the T1 as quick to find a match? Is it as quick to pull in a > memorized L/C combo when a band change happens? If there is a general > consensus that the T1 is on an equal level with the KXAT2, I can save my > $179 and use it for the KXPD2 paddle. > > Comments? > > Jim Bennett / W6JHB > Folsom, CA > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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I went thru the same thinking when I bought my KX2 — internal tuner versus external T1 tuner.
The added and simplified convenience of the internal KX2 tuner won out over the price of the tuner. However, my T1 is still important — using it with my KX1 and Norcal 40A. But, I admit that they are hard to pick up and use for portable QRP ops anymore preferring the KX2 instead — I may never use them again unless I force myself to go backwards in time (aka nostalgia) and use a simpler KX1/Norcal 40A. 73, phil, K7PEH > On Jul 18, 2017, at 8:34 PM, Dave Fugleberg <[hidden email]> wrote: > > I asked this exact question on this reflector in March, and got some good > and useful replies. You can Google for that discussion on Nabble to see > those technical answers. > Bottom line is that both are fine tuners. I know I could have saved some > money by using the T1 I already own, but in the end I opted to order my KX2 > with the KXAT2, and I'm glad I did. It works great, and it's more > convenient than messing with an extra box and coax jumper. > I think the choice comes down to how you want to spend your money, more > than the merits of one tuner over the other, because either one will do the > job very well. I will say that having the internal tuner and an internal > battery makes the KX2 a real grab and go radio! > I'm still using paddles that I already had, but I think the KXPD2 may be in > my future... > 73 de W0ZF > On Tue, Jul 18, 2017 at 9:53 PM James Bennett <[hidden email]> wrote: > >> Thinking very seriously about purchasing a KX2. I have a T1 that I had >> used a few years ago with another QRP rig. Obviously it will work with the >> KX2, but I'm wondering how it compares in performance with the internal KX2 >> unit. Is the T1 as quick to find a match? Is it as quick to pull in a >> memorized L/C combo when a band change happens? If there is a general >> consensus that the T1 is on an equal level with the KXAT2, I can save my >> $179 and use it for the KXPD2 paddle. >> >> Comments? >> >> Jim Bennett / W6JHB >> Folsom, CA >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[hidden email] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to [hidden email] >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Internal tuner is very convenient with extra pluses of remembering setting and not requiring an extra battery. But with some antenna x freq combinations, SWR is sensitive to touch and a balun is needed - an extra weight. With T1, that balun could be a few turns of jumper made of RG-174 around a toroid.
Ignacy, NO9E |
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That same "balun" (actually a common mode choke) will work the same with
the internal tuner. In other words, if it is "good for the T1", it will also be "good for the internal tuner". A common mode choke at the antenna feedpoint will solve many problems. If the feedline does not run perpendicular to the center of the antenna, the feedline may pick up radiation from the radiator and an additional common mode choke at the KX2 end can be helpful. 73, Don w3FPR On 7/19/2017 4:13 PM, Ignacy wrote: > Internal tuner is very convenient with extra pluses of remembering setting > and not requiring an extra battery. But with some antenna x freq > combinations, SWR is sensitive to touch and a balun is needed - an extra > weight. With T1, that balun could be a few turns of jumper made of RG-174 > around a toroid. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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The balun made of a jumper between the radio and the tuner works at low SWR so its losses are negligible. The same jumper on the outside will work at possibly very high SWR and may have substantial losses.
Ignacy, NO9E |
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