Hi Ron, Thanks for your reply!
Yes, the connectors are correctly mated. In fact the available space for the KNB1 module is so tight, I don't even think that it can be offset by one pin. As for the errata, I do have it and I followed its instructions. I won't write to support just yet, maybe someone will be able to help here. 73, Bogdan YO8SAW > On 27 Nov 2016, at 01:51, Ron D'Eau Claire <[email protected]> wrote: > > Hello Bogdan: > > You message caused me to perk up because I maintain a lot of the Elecraft > manuals, but that one predates my work and I never built the K1. So all I can > offer is a couple of possibilities: > > 1) Is the module plugged in correctly. Are all the pins mated and the module > is not offset leaving one of the end pins hanging outside the connector? > > 2) There should have been an errata sheet shipped with your manual. Did you > get it, and if so did you follow its instructions? If for some reason you > don't have the errata, you can download it here: > http://www.elecraft.com/manual/E740022E%20KNB1%20Rev%20C-3.pdf > > 3) Don, W3FPR, is an expert on the rigs and may respond to you at any time > depending upon his schedule. > > 4) Drop an e-mail to [email protected] Monday if you don't find a solution > before then. > > Good luck and have fun! > > 73, Ron AC7AC > > > -----Original Message----- > From: Elecraft [mailto:[email protected]] On Behalf Of Bogdan > - Constantin Lazanu > Sent: Saturday, November 26, 2016 2:54 PM > To: [email protected] > Subject: [Elecraft] [K1] [KNB1] Noise blanker not detected (three dashes ---) > > Hello, > > This is my first message to this mailing list, so please be gentle! > > During the summer and autumn I built my first ever kit: the K1-2 (#3449) + > KAT1. Everything worked surprisingly well (being a first-timer and all), I > never had any problems. Until now. It seems that I failed in my > “build-without-help” venture :) > > A few days ago I completed building the KNB1 option and when I got to the > “Initial Test” phase I noticed that in the menu, instead of HI/LO/OFF I can > only see three dashes (---). The instructions say that the K1 firmware has > not detected the noise blanker module and that a possible cause may be that > the U3 was soldered in backwards. I assume that’s a mistake - there is no U3. > Just a U1, and it’s soldered properly. > > Some details: > > - The K1 firmware is revision 109 > - The KNB1 PCB is revision Cr > - U1 on KNB1 has a small paper label with “NB 1.02” written on it > - Turning the trimmer C2 on KNB1 does vary the band noise and received signal > strength > - There is continuity from KNB1 U1 pins 3/4 to the front panel U1 pin 8 > (6R/AUX) - around 182 ohms > - The voltage between KNB1 U1 pin 1 (VDD) and GND is 6.03V > - The voltage between KNB1 U1 pin 5 and GND is 5.59V (this is the 6V switch > for the noise blanker) > > That’s about as much information as I can think of right now. > > Has anyone else encountered the same issue before? At the moment I’m thinking > that KNB1 U1 may be defective, but I don’t know how to make sure. I would > appreciate some assistance in solving this. > > Many thanks for taking the time to read this message! > > 73, > Bogdan YO8SAW > ______________________________________________________________ > 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]
