The app note says that the mod is incorporated into all new K3's since September 2009.
Without it, the P3 (or other panadapters) should still function, but some weak signals may be undetectable due to the noise floor of the IF being below that of the panadapter. ~iain / N6ML On Fri, Dec 23, 2011 at 10:22 AM, Mike <[email protected]> wrote: > I'd be interested in knowing also. > > 73, Mike NF4L > > On 12/23/2011 12:15 PM, 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
