Re: [Elecraft] BFO Test fails

2010-12-03 Thread kruegerbenny
Q24: 5,76V L33(left): 8,33MHz(240mV peak-to-peak) L33(right): no signal (i think here is the lost) I have to admit that I don't have a call sign yet, but I'm already learning for the "exam" (I'm a student a had a lot to do the the last months..) Thanks for your help Benny -- View this messag

Re: [Elecraft] BFO Test fails

2010-12-03 Thread kruegerbenny
oh, i think i measured @ U11-P7 instead of P6. But when I measured again, there was a signal with ~8.1MHz and 1.5V peak-to-peak. U11-P7: no signal -- View this message in context: http://elecraft.365791.n2.nabble.com/BFO-Test-fails-tp584p5801551.html Sent from the [K2] mailing list archi

Re: [Elecraft] BFO Test fails

2010-12-03 Thread Don Wilhelm
Do you have voltage at the drain of Q24 when in CAL FCTR? You must have voltage in order for the signal to pass through Q24. If so, then trace the BFO signal with your 'scope. Both ends of L33 Then through D37 Then to the gate of Q24. Then the source of Q24. Let us know where the signal is los

Re: [Elecraft] BFO Test fails

2010-12-03 Thread kruegerbenny
very strange... i measured again and now there is a signal with 8,1MHz at U11-6 with 1,5V peak-to-peak... -- View this message in context: http://elecraft.365791.n2.nabble.com/BFO-Test-fails-tp584p5801541.html Sent from the [K2] mailing list archive at Nabble.com. ___

Re: [Elecraft] BFO Test fails

2010-12-03 Thread kruegerbenny
Yes, its a K2 (sorry) The internal counter probe works, already tested in the earlier tests At U11 pin 6, I got a signal with 4.930kHz (2,4V peak to peak) Any idea? -- View this message in context: http://elecraft.365791.n2.nabble.com/BFO-Test-fails-tp584p5801501.html Sent from the [K2] mai

Re: [Elecraft] BFO Test fails

2010-12-03 Thread Don Wilhelm
Name and call please - now required by reflector guidelines. I assume this is a K2 - although you did not state it, it only makes some sense with the K2. Is the internal counter probe working? What do you get when in CAL FCTR if you plug the probe into TP3 or TP1? The BFO frequency of the K

[Elecraft] BFO Test fails

2010-12-03 Thread kruegerbenny
Hello, my BFO test failed (it shows 0. Hz). After checking the right values of the parts, I made some measurements with an oscilloscope. Here the results: Between C174 and C173 : signal with a frequency of 8,06MHz (720mV peak). Results @ RP6: Pin2/Pin8 : no Signal Pin4: 8,37MHz (116mV peak) P