tag:blogger.com,1999:blog-8044784353067686026.post6753111675508854787..comments2024-02-25T10:43:28.969+00:00Comments on m0xpd's <i>'Shack Nasties'</i>: To Tune or Not To Tune?m0xpdhttp://www.blogger.com/profile/13241728975907453128noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-8044784353067686026.post-58504900312932609212010-11-09T16:21:38.777+00:002010-11-09T16:21:38.777+00:00Tuner losses, where quoted by the manufacturer, ar...Tuner losses, where quoted by the manufacturer, are usually between 5 and 10%, but the quoted figures are for when the load is 50 ohms, when you wouldn't need the tuner anyway. I suspect the tuner losses when the mismatch is significant are much higher, and could well end up exceeding the mismatch losses in the feeder. My K2 ATU could get a perfect match on my old attic wire loop even on 80m and 160m where the predicted SWR was astronomical, but I never heard anyone on those bands never mind worked them. So I suspect that these wide range ATUs may end up absorbing most of the power when they show a good match on a non-resonant antenna. It would be an interesting area for someone to investigate. It would help explain why half wave dipoles tend to outperform similar wire antennas that require a tuner.Anonymoushttps://www.blogger.com/profile/11984840704237681015noreply@blogger.com