Well, beating my head against the wall at this point. Went through that section in schematic and rechecked all component placement along with values. Checked all joints plus touched up a few places. Still same results. Checked on the meter what I could in so far as resistance and continuity all looks well.
________________________________ From: Don Wilhelm <w3...@embarqmail.com> To: Cameron Haines <camhai...@yahoo.com> Cc: "elecraft@mailman.qth.net" <elecraft@mailman.qth.net> Sent: Thursday, July 5, 2012 4:40 PM Subject: Re: [Elecraft] K2 Alignment and Test, Part II - No signal on TP3 Ok, initial data has been satisfied, and it has been determined that you have a problem. 1817 kHz does not relate to 12.096 kHz in any harmonic combination that I can find, so I conclude that your counter probe is measuring noise at TP1. Recheck the soldering at all points for the PLL Reference - the components are indicated on the schematic sheet 1 of 4 at the back of the manual. On 7/5/2012 1:53 PM, Cameron Haines wrote: > Don, > > Probe is good and was at 4913 plus a few hz via TP2. Crystal in X1is the > 12096 crystal. I checked continuity and double checked solder joints all > looks good. I still get the strange reading as before via TP2 however. > > Cameron > > > ________________________________ > From: Don Wilhelm <w3...@embarqmail.com> > To: Cameron Haines <camhai...@yahoo.com> > Cc: "elecraft@mailman.qth.net" <elecraft@mailman.qth.net> > Sent: Thursday, July 5, 2012 12:20 PM > Subject: Re: [Elecraft] K2 Alignment and Test, Part II - No signal on TP3 > > Cameron, > > The first thing is to determine whether you have a problem with the > counter probe or with the PLL reference oscillator. Plug the probe into > TP2 and expect a reading close to 4913 to 4916 kHz. If that is true, > the the probe is OK. > > If the probe is good, then check the PLL crystal. It should be a 12,096 > mHz crystal. > I do not know why it would oscillate at 1817 kHz, that has no > relationship to the proper frequency. > > 73, > Don W3FPR > > On 7/5/2012 12:47 PM, Cameron Haines wrote: >> Good morning, >> >> I finally have my probe setup. Here is my readings which seem way off. >> >> 4 Mhz Oscillator Calibration = 1817.00 which should be reading 12090 +/- 30 >> kHz per manual >> >> PLL Reference Range Test >> >> Seems correct range but frequency is wrong as with Osc calibration. >> >> VCO Test >> >> 3 - 4 kHz as opposed to 8 - 10 Mhz. >> >> Any thoughts were I have gone wrong? >> >> Thanks, >> Cameron >> AE5UZ >> >> >> ________________________________ >> From: Cameron Haines <camhai...@yahoo.com> >> To: David Moorman <dmoorm...@comcast.net> >> Cc: "elecraft@mailman.qth.net" <elecraft@mailman.qth.net> >> Sent: Tuesday, July 3, 2012 7:40 PM >> Subject: Re: [Elecraft] K2 Alignment and Test, Part II - No signal on TP3 >> >> >> Great suggestion. I can hear it a 4Mhz now.. from my Softrock SDR. Wonder >> why the Freq counters couldn't pick it up however. hmm. >> >> Thanks David! >> >> >> ________________________________ >> From: David Moorman <dmoorm...@comcast.net> >> To: Cameron Haines <camhai...@yahoo.com> >> Cc: "elecraft@mailman.qth.net" <elecraft@mailman.qth.net> >> Sent: Tuesday, July 3, 2012 7:03 PM >> Subject: Re: [Elecraft] K2 Alignment and Test, Part II - No signal on TP3 >> >> Do you have a receiver you can listen on to see if the oscillator is >> actually oscillating? >> >> Dave K9SW >> >> >> >> On Jul 3, 2012, at 6:41 PM, Cameron Haines <camhai...@yahoo.com> wrote: >> >>> Correction. >>> >>> >>> Hey Guys, >>> >>> Well, I am at the part where I need to test the 4 MHz oscillator >>> calibration and ran into a snag. I am not getting anything on two different >>> frequency counters when connected to TP3. Test up to this point have been >>> good. Checked all the components around X1 and all look correct. No error >>> message on startup. >>> >>> Any ideas where to go from here? >>> >>> Thanks, >>> Cameron >>> AE5UZ >>> ______________________________________________________________ >>> 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 >> > ______________________________________________________________ > 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
