Still having issues with my K2, I did align the filters using the Spectrogram software so I believe they are ok
Well I decided to start from scratch and started RX troubleshooting/signal tracing before I go back to TX side want to make sure the RX is 100% and while the stages up to the input of the crystal filter look ok the output compared to the manual is extremely low. I ended up using the RF probe supplied in the kit so all is known. Also removed the SSB board and fitted the corresponding jumpers at W2 and W3 and C167 Here is what i am seeing with a 0.14Vrms input to the antenna I used 10.1Mhz but I tried other bands with similar results. All voltages up to the input of the variable crystal filter look normal. Case or collector of Q22 = 2.3Vrms At W2 = ~ 2Vrms cathode D30 =0.89Vrms cathode D31 =0.95Vrms cathode D32 =0.757Vrms cathode D33 =0.767Vrms cathode D34 =0.735Vrms W3 = 0.080Vrms the K2 book on Page 11 says it should be about 0.34Vrms , I am way low compared to that. I suspect either D34 or T7 ? Also I don't appear to be able to saturate IF amp it says I should read approx 0.15Vrms at Pin 8 of U12 Am I on the right track. Thanks again, Cliff VK2CCJ ______________________________________________________________ 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
