Fred, The N8XJK booster does put out a bit of RFI on HF. It's not enough to cause problems here, but might be at an ultra low-noise QTH. I've noticed this on receive, but haven't looked at TX spectral purity. Wayne may have a definitive answer on this.
73, matt W6NIA On Mon, 19 Jan 2015 10:15:41 -0800, you wrote: >Wayne all I can say is wow! I knew the K3 was good but I had no idea it was >that much better. Let's hope the other manufactures adopt the most sincere >form of flattery... they copy the K3. After all that benefits all listeners. > > >My question relates to Matt's use of a battery booster. In theory this >allows the K3 to use maximum feedback and therefore have an even cleaner >signal. However my experience with battery boosters, not necessarily the one >Matt uses, is they are dirty in terms of electrical noise. The lower the >input voltage the dirtier they get. What is the K3s sensitivity to power >input noise. In short is the battery booster concept a net gain in terms of >spectral purity? > >73 >Fred, AE6QL > >-----Original Message----- >From: Elecraft [mailto:[email protected]] On Behalf Of Wayne >Burdick >Sent: Monday, January 19, 2015 9:22 AM >To: Kjeld Holm >Cc: [email protected] >Subject: Re: [Elecraft] K3 cleanest signal possible > >Hi Kel, > >The K3/100's phase noise and ALC artifacts are so low at all power levels >that you shouldn't need to finesse this. I would select power level based on >what you want to get out of the amp. > >See W9YC's study of transmit phase noise and keying bandwidth of various >transceivers: > > http://audiosystemsgroup.com/TXNoise.pdf > >73, >Wayne >N6KR > > >______________________________________________________________ >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 >Message delivered to [email protected] Matt Zilmer, W6NIA -- "Give me six hours to chop down a tree and I will spend the first four sharpening the axe." -A. Lincoln ______________________________________________________________ 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 Message delivered to [email protected]
