Maarten (and all), There are two separate noise sources to be considered here, and it is important to separate them. One is the internal receiver noise, and the second is demodulated noise that comes into the receiver via the antenna port.
For anyone who suspects that the K3 itself is noisy (because of internal noise), I encourage those owners to do an MDS measurement. If the internal noise is excessive, the MDS will be greatly reduced - MDS is the minimum signal level that can be detected above the receiver noise floor. The Elecraft XG1 or XG2 is an inexpensive signal generator that will do the task - and the instructions for measuring MDS are in the manual. If your K3 is not 'up to par', then that problem can be fixed. OTOH, if the noise is coming into the receiver on the antenna port, there is not much that can be done to eliminate it - it is just like any other "signal" coming in from the antenna. The K3 does offer tools such as the attenuator and AGC adjustments that can better handle than noise. Unfortunately, there is not a "one size fits all" solution because each source of noise is different in its character and amplitude. I cannot comment intelligently to those who are comparing the K3 audio noise output with that of another receiver because I do not have access to the receivers they are comparing. I can only guess that the difference may be due to differences in receiver gain, AGC action, bandpass width, or the shaping of the audio spectrum. Without doing actual measurements, these variables cannot be quantified. 73, Don W3FPR Maarten van Rossum wrote: > I hope that with the help of this topic on the reflector, I too am able to > set my K3 correctly for my circumstances so I too can enjoy noise free > reception. > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
