The P3 is usable without the mod but it increases the sensitivity of the P3 display. On the low bands you probably won't notice any difference but if you do much 10 or 6 meter operating you probably want to make sure the modification has been done.
I'm not sure of the serial number of the changeover, but the web site says "RF board Rev H3 and later" have the new resistor value. Alan N1AL On Fri, 2011-12-23 at 09:15 -0800, Matt Zilmer wrote: > The main value is bringing the IF output up to a level that is usable > by the P3. > > I thought that the mod was in all K3's after s/n 3600-something or > other, but there are probably experts around (or Elecraft crew) that > know the exact cut-in s/n or date. > > 73, > matt W6NIA > > On Fri, 23 Dec 2011 09:05:22 -0800 (PST), you wrote: > > >Can someone explain the real world value of making this modification? This > >mod > >is listed on the Elecraft website with this description (new production > >incorporates this mod): > > > >This modification increases the signal level at the I.F. output by more than > >10 > >dB. It requires changing one > >easily-accessible resistor on the K3’s main RF board with either another > >surface > >mount device (SMD) or a leaded > >1/8 watt resistor. > >I have s/n #3012 and expect my radio was pre-modification. I will be adding > >filters and other mods after the first of the year and want to make this is > >one > >time affair if possible. > > > >Merry Christmas! > >Jack - WE5ST > >______________________________________________________________ > >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 > ______________________________________________________________ > 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 > ______________________________________________________________ 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
