Re: [Elecraft] K2 PLL Ref. Oscillator Range Test Problem.
Thanks for your help Don and your suggestion on the mods. I had made the crystal and toroid mods but didn't think of the other components in the mod kits. Jim / W1FMR On Wed, May 22, 2019, 8:47 AM Don Wilhelm wrote: > Jim, > > It is likely to work OK even with the reduced PLL range. > If you want to correct it and gain some temperature stability for your > K2 at the same time, add the BFO upgrade modification - get BFOMDKT from > Elecraft. > > That kit contains a new PLL crystal as well as parts for the BFO. > > You can see older posts at Nabble. > > 73, > Don W3FPR > > On 5/22/2019 12:25 AM, Jimithy66 wrote: > > I am building an older QRP K2 kit ser. # 2438 Ver. A in > > the Alignment and test section Part 11. pg. 57, the > > PLL Ref. Oscillator Range Test is out of limits. > > > > The Reference High and Low frequencies are OK with > > readings (12100.53 high and 12089.43 low) with range > > limits of 11.5 - 25 KHz but it is low, 11.1 KHz. > > Is this a problem ? > > > __ 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
Re: [Elecraft] K2 PLL Ref. Oscillator Range Test Problem.
Jim, It is likely to work OK even with the reduced PLL range. If you want to correct it and gain some temperature stability for your K2 at the same time, add the BFO upgrade modification - get BFOMDKT from Elecraft. That kit contains a new PLL crystal as well as parts for the BFO. You can see older posts at Nabble. 73, Don W3FPR On 5/22/2019 12:25 AM, Jimithy66 wrote: I am building an older QRP K2 kit ser. # 2438 Ver. A in the Alignment and test section Part 11. pg. 57, the PLL Ref. Oscillator Range Test is out of limits. The Reference High and Low frequencies are OK with readings (12100.53 high and 12089.43 low) with range limits of 11.5 - 25 KHz but it is low, 11.1 KHz. Is this a problem ? __ 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] K2 PLL Ref. Oscillator Range Test Problem.
I am building an older QRP K2 kit ser. # 2438 Ver. A in the Alignment and test section Part 11. pg. 57, the PLL Ref. Oscillator Range Test is out of limits. The Reference High and Low frequencies are OK with readings (12100.53 high and 12089.43 low) with range limits of 11.5 - 25 KHz but it is low, 11.1 KHz. Is this a problem ? In the PLL troubleshooting section all readings are OK except the BFO buffer output (0.025 - 0.070 VRMS ) is slightly high 0.076 VRMS. Is this a problem ? And lastly, How do I visit the archives on this list ? Thank you, Jim / W1FMR __ 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
