Good question, Rudolf, but no the ATU is not engaged. On Tue, Nov 3, 2009 at 2:56 PM, hb9ari <hb9...@bluewin.ch> wrote:
> Hi Brian, > > Just an "idiot" question: are you using the K3 ATU? > > 73, Rudolf HB9ARI > > Don Wilhelm wrote: > > Brian, > > > > Is the higher reflected power indicated on the K3 or is it the reading > > on a meter in the line between the amp and the antenna? > > > > If it is read on an external meter -- > > Is there any possibility that something is arcing over at high power - > > check your antenna system for that condition. > > > > If the indication is on the K3, then the problem is in the input circuit > > for the amp (giving a non-50 ohm resistive load to the K3). > > > > 73, > > Don W3FPR > > > > Brian Machesney wrote: > > > >> I'm feeding a "double L" antenna on 160m (visualize a vertical dipole > with > >> the top and bottom legs bent to form something like a capital "C" and > fed in > >> the middle of the vertical leg). The SWR bridge on the K3 shows 1:1 SWR, > but > >> when I fire up my Alpha 91B, I see significant reflected power. > >> > >> I recently saw a post on the topband reflector from another K3 owner > whose > >> 160m output power is being reduced from 100W to 50W by the K3 even > though > >> the SWR reads 1:1 on the K3's internal SWR bridge. > >> > >> Has anyone else seen this or have an explanation for it? > >> > >> > >> > > ______________________________________________________________ > > 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 > > > > > ______________________________________________________________ > 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 > -- 73 -- Brian -- K1LI ______________________________________________________________ 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
