Being a mostly tube guy, I have not read much about phase noise. Do tube circuits have phase noise? Do discrete components (solid state, transistors) in coil and cap VFO circuits have phase noise?
What is the worst source of phase noise? What circuits have little or no phase noise? My ears are shot, but I always thought some of the old analog stuff sounded much cleaner than digital stuff. I was listening to a stronger SSB signal on the K2 not that long ago, and it had strong artifacts up and down the band that caused hard copy on some CW signals. Was that phase noise? Thanks for any info, Brett N2DTS > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of DickandSandy > Sent: Monday, September 03, 2007 9:20 AM > To: [email protected] > Subject: [Elecraft] Elecraft receiver experience > > After this weekend's hamfest I was reading my new ARRL 2007 > handbook to see > what might be NEW in ARRL testing of receivers, I came across > this sentence > that I thought pretty well summed up my experience with my K2 > receiver. > > On page 10.7 3rd column "When using a good receiver with a > linear front end > and a clean LO, amateurs accustomed to receivers with poor phase-noise > performance report the impression of a seemingly emptier band > with gaps > between signals -- and then they begin to find readable > signals in some of > the gaps. > > This whole section in the handbook reveals the "science" > behind the efforts > engineers put into receiver design and why phase noise is so > important for > both the receive and transmit performance. > > Dick > WB7OND > "hanging around for shipment 2" > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
