Mike, Yes, I would say that you have a significant difference there and it indicates a problem of one nature or another. What mode? How did you set up the IF filters? Use Spectrogram. Look at my website www.w3fpr.com article on K2 Dial Calibration - Part 3 deals with the filter setup. The reason I suspect the filter is that the XFIL 1 is a wide filter, and if you did not offset the passband from zero frequency you will have the BFO energy appearing in the output and that will influence the S-meter response.
73, Don W3FPR On 6/2/2012 3:31 PM, VK1OO wrote: > Don, > > Nice to hear from you again. > I had a similar thought from Jim, W4ATK. > I'm surprised the S-Meter is showing an additional 6 bars on X1. As > I'm listening to a quiet frequency I am assuming that's all additional > noise. Further that that is much more than seems justified by the > relatively difference in bandwidth. > > I'm happy to simplify the question to, Why would the S Meter be > showing that much difference? > > Mike > VK1OO > > On 03-Jun-12 1:16 AM, Don Wilhelm wrote: >> Mike, >> >> I can't tell from your post just how much increase in noise you are >> hearing. >> There will be an increase in the total noise heard just because the >> bandwidth is increased - you will hear the total noise in the >> passband, and when the passband is widened, the total noise will >> increase. >> >> OTOH, if the increase is extreme, that would indicate a problem. >> >> 73, >> Don W3FPR >> >> On 6/2/2012 6:02 AM, VK1OO wrote: >>> Hi, >>> >>> Another interesting problem with the K2. I've noticed that when >>> switching between the KSB2 filters, X1-X4, that there seems to be more >>> background noise on X1. And there is a similar increase in S meter >>> bars. >>> On a quiet frequency with X1 selected, the S meter shows S8; X2-X4 >>> show S2. >>> I'd certainly appreciate any suggestions about where to start >>> troubleshooting this one. >>> >>> >> > ______________________________________________________________ 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
