You do realize you can adjust the level one of the tones with the mic gain control, don’t you?
..bc nr4c > On Jun 12, 2016, at 6:11 PM, Erik Basilier <ebasil...@cox.net> wrote: > > Of course, I don't mean that the nature of the 2 tones affect the IMD > characteristics of the hardware. Rather, what I meant was: "if one measures > IMD with a standard 1:1 amplitude ratio, and then measures again with a > non-standard 2:3 ratio, how much would the IMD suppression number change, > and in what direction?" I imagine that the answer could be found either by > using independently adjustable external audio tone generators, or with a > math package. > > -----Original Message----- > From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Erik > Basilier > Sent: Sunday, June 12, 2016 2:56 PM > To: Elecraft@mailman.qth.net > Subject: Re: [Elecraft] KX3 IMD vs DC input, using built-in 2 TONE > > One more question: > > Assuming that the 2 tones are about 2:3 in amplitude ratio, can anyone say > how that would be expected to affect the 3rd order IMD figures? > > > > From: Erik Basilier [mailto:ebasil...@cox.net] > Sent: Sunday, June 12, 2016 2:53 PM > To: 'Elecraft@mailman.qth.net' <Elecraft@mailman.qth.net> > Subject: KX3 IMD vs DC input, using built-in 2 TONE > > > > I am testing my KX3 / KXPA100 combo, looking at TX IMD and power output > depending on the DC power supply characteristics. I am experimenting with a > N8XJK Boost Regulator (40A max) as well as an Astron linear supply adjusted > down to low voltage, simulating a run-down battery. > > > > To judge IMD I use the built-in 2 TONE, mix down sampled output to audio, > and feed into Spectrum Lab. > > > > When I look at the envelope, its smallest amplitude is about 1/3 of peak. > This suggests that the 2 tones are not of equal amplitude. Has anyone else > seen this? I downloaded the laterst firmware about a week ago. > > > > Thanks, > > Erik K7TV > > ______________________________________________________________ > 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 Message > delivered to ebasil...@cox.net > > ______________________________________________________________ > 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 > Message delivered to n...@widomaker.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 Message delivered to arch...@mail-archive.com
