-----Original Message----- From: Mike Walkington I was reading some doco for this antenna and read the following: Never use an antenna tuner to tune the antenna.Use of a tuner only fools the transmitter and does not correct a problem at the antenna. This doesn't seem right can I use my K2's tuners?
------------------------- Yep, that's pretty much it. This is nothing new and nothing specific to the K2 or the 5BTV antenna. An ATU at the rig does NOT change the impedance of the antenna or provide any sort of match between the coax and the antenna. Instead it provides a match between the rig and the coax. Any standing waves on the coax due to impedance mismatch between the antenna and the 50 ohm coax will remain. But, again, this is nothing specific to the K2 or 5BTV. So yes, you can use your K2 tuner. It will do what it can to transform the who-knows-what impedance is seen at the rig end of the coax into a 50 ohm resistive load to keep the rig happy. You'll have loss in the coax due to the SWR and resulting reduced efficiency in the antenna system but clearly that is a compromise that most of us have been happy to live with for many years. My antenna system consists of a 32' vertical in the back yard with a remote tuner in the garage. 35' of RG-213 connects the tuner to the base of the vertical and often carries rather high SWR. RG-8x connects the rig to the remote tuner and that section is always at SWR 1.5 or below thanks to the action of the tuner. The whole thing seems to work just fine. - Keith N1AS - - K2 5411.ssb.100 - _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
