It depends on whether the antenna is badly out of balance and whether it is low or high impedance.
With coax based antenna and when the balun is not required, KAT3 is very convenient. When one uses unbalanced high SWR antennas fed by ladderline or TV line, one needs an efficient current balun. For high impedance antennas, some baluns including BL2 have very high losses. In fact, KAT3 can match BL2 without any antenna; the toroid gets hot fast. With an outside tuner, a jumper of RG174 between K3 and a tuner looped a few times on a toroid makes a very effective low loss balun. Ignacy, NO9E -- View this message in context: http://n2.nabble.com/Thoughts-on-internal-vs-external-ATU-for-K3-tp4627735p4628321.html Sent from the [K3] 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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
