Many thanks Don, I have also had some input from Wayne on this one and have some things to check with the scope. I shall combine your reply with his and see where it takes me.
Thanks again 73 Stephen On 27/10/2009 21:57, "Don Wilhelm" <[email protected]> wrote: > > Stephen, > > The first thing I would suggest is to see if the KX1 is really receiving > on 20 meters, or perhaps on some other frequency band. What I am > thinking is that the firmware chip may not be fully seated in the > socket, which will cause to DDS output to be on some unknown frequency. > > Another thing that could cause similar problem is a distorted DDS output > waveshape - check inductors L4 and L5 for damage and capacitors C50, C51 > and C52. > > The other possibility is that the KX1 was actually responding to the > image. When tuned to USB at 14.2, the DDS output is 4.9 kHz below the > received frequency, and there could be leak-through of strong signals > near 4.4 MHz. > > 73, > Don W3FPR > ______________________________________________________________ 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
