"Squeezing higher power out degrades the IMD." SO... The "10 watt" amp feeds the 100 w PA? Does it get fed with 10 watts or 12 watts? What does that mean to the IMD of the 100 w PA by the cause of the degraded IMD being fed into the PA?
73, de Jim KG0KP ----- Original Message ----- From: "Ron D'Eau Claire" <r...@cobi.biz> To: <Elecraft@mailman.qth.net> Sent: Thursday, December 16, 2010 6:42 PM Subject: Re: [Elecraft] kpa 500 > And if you care about transmitting the cleanest signal, you'll hold the > K3/10 output to 10 watts PEP. Squeezing higher power out degrades the IMD. > The Power control provides some additional room to be sure everyone can > make > the rated 10 watts. > > The same is true for the K2/10. > > Ron AC7AC > > -----Original Message----- > Well, let's see if I can do this right: 15 db = 10 log (Pout / 12 watts) > > where 15db is the FCC maximum allowed gain. Assuming that 12 watts > will drive the KPA500, we solve for Pout as: 12 watts * 10^1.5 = 379 > watts > > So, if I did the calculation correctly, that would be legal maximum. I > would suspect the gain to be less, perhaps in the 200-300 watt range > for no other reason than it feels right to my mind. There may also > have been an email from Lyle that mentioned something in the 200 watt > range, but I'm not sure. > > 73, Byron N6NUL > > > ______________________________________________________________ > 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
