Ah, so you did, Don. My mistake for not taking heed, I would have pressed on with the signal tracing. However, while sitting here at work and pondering the problem, I just re-read your message below for the 3rd or 4th time, and something clicked: AHA! I _did_ put C6 in the wrong holes!! When I realized you were specifically referring to a strip of 3 holes it jogged my memory. There's even an errata about this, which I dutifully added to the manual, but it still confused me. The errata says:
Add to the end of the step, "Use the outer of the three holes, not the two holes closest to the left edge of the pc board." Somehow I just interpreted that as "use the two holes closest to the right edge." Since I'm at work at the K2 is at home, I thought I would have to wait to confirm my mistake, but I remembered that I sent some friends a picture of the board when I finished it. I just pulled it up in my email, and I can clearly see that C6 is in the wrong holes! I'll correct this tonight and see what that gets me. Thanks Don! On Wed, 06 Oct 2010 13:29:17 -0400, Don Wilhelm <[email protected]> wrote: > Owen, > > I tried to caution you not to get excited about RF voltage values > that were higher than the listed expected values. > That is normal for a K2 that is not detecting any output - the K2 > increases the drive in an effort to obtain more output. Since you > have no output, the RF voltages on the working stages will be at the > maximum value. > The listed "expected" values are within 10% of what is to be expected > for a properly working K2 at 5 watts. > > The transmit buffer has output and there is none at W6. Look at the > schematic so you can identify the components between those two points. > Basically it is the D6/D7 switch and the bandpass filter. > > Is there any chance you put C6 in the wrong holes? In the set of 3 > holes at the J15 location, the center hole should be empty. C6 goes > in the holes for pins 1 and 3. > > 73, > Don W3FPR -- Owen B. Mehegan ([email protected]) "He is a dangerous mixture of sophistication and recklessness which makes one anxious about his influence on other boys." ______________________________________________________________ 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
