Dick - You said "running 1.2.10.27". That is the version number of the utility program used to load the firmware into the K3(among other things) , not what the K3 is running . The version of that would be more relevant to this discussion. The current version is 3.68.
73, Mike NF4L [email protected] wrote: > Hi Guys, > > I'd appreciate your thoughts as to why my K-3 receiver is so noisy. I'd > really like to make this radio perform. The radio is Serial #603F (factory > model) running 1.2.10.27. I purchased the unit from the original owner a > couple of months ago so I don't know if it's always been this noisy but I do > know it was the same before I recently updated software to 1.2.10.27. The > radio is in immaculate condition and was never used mobile or bounced around. > > (it's a beautiful radio that looks like new!) > > I say the receiver is noisy based upon listening to dozens of different > signals on: 40/20/15 m. and by doing numerous A/B comparison tests. The > comparison tests were done with the K-3 Pre-Amp turned Off. (and tried with > ATT > on and off but mostly on to reduce noise). > > Radio 1: Yaesu FT-1000-MP w/AF Mod. A signal is peaking S-8 and with the > no signal noise level is averaging S-1. Therefore, the signal is peaking > aprx. 7 s-units above the noise based upon the MP s-meter and the signal > sounds > loud and is way above the noise level. Now I switch to the K-3: > > Radio 2: K-3 tuned to the same signal with PreAmp Off and is peaking S-7 > but the no signal noise level is noisy S-4 to S-5. Therefore, the signal is > peaking only about 2 or 3 s-units above the noise level based upon the K-3 > s-meter. The result is that the MP has aprx. a 4 s-unit S/N ratio > advantage. > > > Thoughts: I realize that all s-meters read differently and the fact that > the MP s-meter shows a 4 s-unit stronger signal above the noise level > doesn't > mean alot. But the fact is that the signal on the MP sounds MUCH louder > with alot more headroom above the noise level. The K-3 receiver sounds so > noisy even with the S-7 signal that it isn't enjoyable listening to and > that's > why I ran the comparisons because I couldn't stand all the noise. Switching > on the K-3's NR, ATT, and/or adjusting the RF Gain does help some but the > signal still sounds noisy compared to the MP. > > Based upon "Reviews" of the K-3 I believe that I must have an unusual "K-3 > noisy receiver" problem. > > I'd sure appreciate your ideas on how I can get a better S/N ratio on my > K-3. > > Thanks! > > 73, > Dick- K9OM > > ______________________________________________________________ > 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
