Hi Don, Just wanted to let you know that I fixed the problem. I re-soldered all the switching diodes and also found a very small piece of clipping sticking to the back side of the board. Don't know if it was the clipping or the re-soldering but working perfectly now. Thanks for all the help.
Earl VE7Qj -----Original Message----- From: Don Wilhelm [mailto:[email protected]] Sent: Monday, April 16, 2012 10:18 PM To: Earl Richardet Cc: [email protected] Subject: Re: [Elecraft] K2 Audio Level using filters Earl, It does sound like you have a problem with the filter switching diode matrix on the KSB2 board. If your signal level is decreased from the level obtained when the KSB2 is bypassed ( jumper between pins 1 and 3 of both J9 and J10). then you have a problem with the KSB2 board. Make certainly all the diodes are correctly oriented, and re-flow the soldering in the OP1 filter end of the board. If you are relying on the BFO frequency settings listed in the KSB2 manual, be advised that there "is a better way" -- go to my webpage www.w3fpr.com article on K2 Dial Calibration and go to "page 3" which deals with the filter settings. Use Spectrogram to give you a visual indication of the filter placement. Note that recent K2s will have wide filter widths that are much wider than indicated i\on the K2 display -- use Spectrogram to indicate the actual filter width. Spectrogram version 5.17 and Spectrogram version 16 may be downloaded from my website, Both have been seving my needs for a long time and should be free of problems (there have been reports of bad downloads of version 16). 73, Don W3FPR On 4/16/2012 10:28 PM, Earl Richardet wrote: > Hello to the Reflector, > > > > I've recently completed building my Elecraft K2 transceiver and I have > one problem that I would like to resolve. Up to the point where I > installed the SSB kit into the radio, the audio level on each of the > filter selections was strong and working fine. After I installed the > SSB kit, the audio level on the CQ filters dropped off significantly. > The OP1 SSB filters are working great and have strong audio output, > but as soon as I select FL3 or FL4 the audio drops way off. Otherwise > the SSB board is working fine and I great audio reports from other stations on my transmit audio. > > > > At this point I have confirmed all the components on the SSB, no bridges or > splatter that I can see. Everything appears to be ok. Don't know where to > start troubleshooting this issue. > > > > Appreciate any suggestions on troubleshooting or if anyone has > experienced this themselves and of course what you did to resolve. > > > > Thanks and Regards, > > > > Earl VE7QJ > > ______________________________________________________________ > 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
