The chances of that are negligible. You should send your original email and all follow-ups to [email protected].
I have heard of a lot of strange K3 symptoms, but this one is beyond the pale. It sounds like one of the pre- or post-roofing filter components is somehow shifting the resonance, and looking at the schematic I just don't see how that's possible unless there is a bypass-value in place of a regular cap. Conventional SMT assembly - that would not happen. I'm no expert, but this probably is not some trouble that can be shot over email. One of the Elecraft gang can help you narrow it down, but it should probably be done interactively over the phone or Skype or whatever. You *may* be able to avoid the additional hassle by running the EE INIT procedure on your K3 and starting over. This will only work if there isn't some defect in the hardware, but that is so unlikely that running EE INIT is your best bet. See p66 of the Owner's Manual (rev D7), or use Adobe to search for "Parameter Initialization". If you dorked a setting, then EE INIT will solve that problem and put your K3 into its factory default settings. Good Luck. No matter what you can or can't get done in short order, Elecraft will assist you with any problem. 73, matt W6NIA K3 #24 == On Fri, 08 Jul 2011 23:40:40 -0400, you wrote: >Filter placements are correct, and no empty slots are enabled -- I've done >the setup both ways: manually via CONFIG on the K3 itself, and via the K3 >utility. Done it many times now. > >Here's the odd part: > >If I change the frequency offsets in the K3 (via CONFIG menu), I can dial >across the range of value offsets and peak a signal almost to the point at >which things sound like they're operating properly. Same thing happens for >3 of my filters -- the 2.7k, 400 Hz and 200 Hz. In all cases the specified >offset is not the one value that gives the strongest signal. Using the >specified offsets, it seems like the signal is not properly centered in the >passband. > >What are the chances all three of my filters have the wrong offsets? > Possible but doubtful. > >Is there some other setting on the K3 that I may have inadvertently tweaked >during calibration that would have thrown off all filters? > >I'm stumped. > >--Andrew, NV1B >.. > > > > > >On Fri, Jul 8, 2011 at 9:35 PM, Guy Olinger K2AV <[email protected]>wrote: > >> The most likely cause of your problem is that the filter placements as >> viewed in the K3 utility and as actually installed on the main board >> do not actually match. Next is that you have left an empty slot >> ENABLED in the K3 utility. After that, a filter not plugged all the >> way in or defective. >> >> 73, Guy. >> >> On Fri, Jul 8, 2011 at 8:06 PM, Andrew Moore <[email protected]> >> wrote: >> > New K3 with 3 filters: >> > >> > FL1 - empty >> > FL2 - 2700 Hz >> > FL3 - empty >> > FL4 - 400 Hz >> > FL5 - 200 Hz >> > >> > FL2,4,5 enabled, offsets and bandwidths entered, and filters plugged into >> > right slots (FL1 can remain empty right?) >> > >> > When I turn the bandwidth encoder CCW, everything's fine until I hit 400 >> Hz. >> > At 450, I hear signal. At 400, when FL4 kicks in, receiver goes quiet >> from >> > then on. >> > >> > Ideas? >> > >> > Also - RF calibration - I'm using an XG2 to feed the K3 a 50 uV signal. >> The >> > K3 hears it at about S5 max, not even close to S9. Followed the >> calibration >> > instructions. >> > >> > --Andrew, NV1B >> > .. >> > ______________________________________________________________ >> > 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 ______________________________________________________________ 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
