Ron I have no comments about the KX1. However I do seem to recall the Tek 422 has a 30 MHz bandwidth with a P6006 probe.
73 Fred, AE6QL -----Original Message----- >From: [email protected] >Sent: Aug 23, 2014 3:50 PM >To: [email protected] >Subject: [Elecraft] no DDS VFO output/KX1 > >Hello All: >My first time to post to this list. >I am building KX1 S/N 2825 and have progressed to page 43 Alignment and Test >Part 2 with no problems. I have completed tests through page 44-keyer. >I have not been able to proceed to the Receiver Alignment section, page 45, >because I can not discern any signal from the DDS VFO, so not able to hear any >signals, on either 20m or 40m. >My question is this: should I be able to see the VFO signal at pin 19 of U2? >I am using an old TEK 422 scope with 10 x probe. I see nothing at pin 19 or >at pin 3 of Z2 the 50 mhz clock. At pin 3 of Z2, clock output, I measure gnd >(with power off, of course). I also measure gnd at pin 4 of Z2, but also see >2.7 vdc when the unit is powered up. No VFO or MCLK signals are visible. >This is confusing(!) > >I’m kinda stymied at this point, and any suggestions are welcome! >Should I be able to hear the VFO signal on an outboard receiver? >Should I be able to see the VFO signal at some point, and where is the best >measurement point? >Another note: I am using the directions from Don Wilhelm’s letter of 4 May, >2011 regarding replacement of components for KXB3080 option prior to >installing the option. This includes C27,C26,C1,T2. He will know what I am >referring to. >Sorry to run on for so long. > >Any help or suggestions, please? > >Thanks for the bandwidth. > >73 >Ron Dickerson WA7BME >______________________________________________________________ >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 >Message delivered to [email protected] ______________________________________________________________ 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 Message delivered to [email protected]
