* On 2011 17 Dec 08:47 -0600, Larry K1UO wrote: > curious now as to what I am seeing.
I see about the same thing on 160m. I have a 3/8 wave center-fed doublet on 160m fed via 450 ohm window lead and a Palstar AT1500DT tuner. As I need to retune on excursions of more than 20 kHz or so, the peak of the noise on the P3 corresponds to the matched setting of the tuner. As the most efficient transfer of energy occurs when impedances are matched, it makes sense that the P3 would show a peak of noise at the setting of the conjugate match. In other words (for those who believe I'm not clear enough and will want point that out via private mail--save your bandwidth), the noise floor peak on MY P3 corresponds to where I have the tuner set for an SWR of 1.0:1 on 160m. The display is not as pronounced on other bands where the 2:1 SWR bandwidth is much wider. 73, de Nate N0NB >> -- "The optimist proclaims that we live in the best of all possible worlds. The pessimist fears this is true." Ham radio, Linux, bikes, and more: http://www.n0nb.us ______________________________________________________________ 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
