Actually, I have, Rick. The KPA1500 is the second greatest amplifier in the history of the solar system. It's a BattleBot, a monster, the doomsday legal-limit amplifier. But the KPA500 is tiny, and so quiet that I can run it in the same room where the XYL watches TV. My cat "Bubs" McLovin does not even stir from his dreams of taking down a Cape Buffalo when the KPA500 hits FAN3.
73 Eric WD6DBM On Wed, Jul 8, 2020, 2:34 PM Rick Bates, NK7I <rick.n...@gmail.com> wrote: > Then you haven't used a KPA1500. > > Rick NK7I > > > On 7/8/2020 2:11 PM, Eric Norris wrote: > > Thanks, Jack! Now the only question is, is the KPA500 a great amp, or > the > > greatest amp ever? I'm in the second camp. > > > > 73.5 Eric WD6DBM > > > > On Wed, Jul 8, 2020, 1:16 PM Jack Brindle <jackbrin...@me.com> wrote: > > > >> I can confirm that KPA500 V1.00 firmware, which was the first released, > >> had a max temperature of 90 degrees C. This has not been changed in any > >> subsequent code. > >> > >> As for the input power, the amplifier has improved over time. My > original > >> prototype KPA500 requires power in the range described (about 35 - 40 > >> watts), while my new one (just over a year old) needs about 20 or so > watts. > >> Both are great amps! > >> > >> 73! > >> Jack, W6FB > >> > >> > >>> On Jul 8, 2020, at 1:00 PM, William Hammond via Elecraft < > >> elecraft@mailman.qth.net> wrote: > >>> Hi Eric, My manual (revision B, 2011) that came with my SN 0149 says > 90C > >> maximum, page14 in the specifications. It also says drive power 30-40 > >> watts for 500 out and I have never beed even close to that, usually > 22-26 > >> watts drive. > >>> FYI, > >>> Bill-AK5X > >>> > >>>> On Jul 8, 2020, at 6:00 AM, Eric Norris <norrislawfi...@gmail.com> > >> wrote: > >>>> I just read in the current KPA500 Manual that max heat sink temp is > 90C. > >>>> Is this true for my first-year production KPA500? I seem to remember > >>>> somethink like 75C. I cant find my old manual. > >>>> > >>>> 73 Eric WD6DBM > >>>> ______________________________________________________________ > >>>> 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 a...@me.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 jackbrin...@me.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 rick.n...@gmail.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 norrislawfi...@gmail.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
