Here's an example where LINK was helpful to me: In the early AM I was calling CQ in CQWW160 and heard what I knew was someone just the very least bit above the noise level come back to me. I was using a HI-Z Triangular for Rx with the main and the sloper/INV-L Hybrid for the sub. I went to just the main and couldn't copy the signal and then went to LINK and with that I could barely make out JH0BBE. I could absolutely not do so otherwise at that moment. I just received his QSL for that Q in the mail and his is on the way back to him.
The difference at that time between Main/Diversity/LINK was incredibly little but selecting through them at that time provided me with a new multiplier. There is I believe an attenuation when using Diversity which normally is insignificant but in rare & marginal cases, hearing both signals without any attenuation can make the difference. To me, the use of Diversity is almost always an improvement to readability but not 100% of the time. I would never give up the use of my Sub Rx, it is magnificent and invaluable to me. Sometimes LINK is useful. Flame suit on. 73, Gary KA1J > While reading this email thread, I just realized that many people don't know > how to operate their K3s! Eliminating the LINK function should not cripple > the diversity function, let alone eliminate it. I'm yet to read an example > that would convince me about the usefulness of the function. In my opinion, > the LINK function is a feature that I still don't understand why someone at > Aptos bothered to program in the K3. As Don pointed out, the only use of this > feature would be if a DX station was moving its TX frequency while working > SPLIT. In more than 20 years as a ham chasing DX, I have never ever seen a DX > station do that (it's kind of silly to do that because it would put in > disadvantage the majority the DX'ers using other transceivers). > Sorry for my bluntness.... > 73,Robert-KP4Y > > On Monday, February 16, 2015 5:22 AM, Guy Olinger K2AV > <[email protected]> wrote: > > > Link uses both VFO's, with VFO A controlling main RX and VFO B > controlling sub RX. Diversity uses only VFO A on *both* main RX and > sub RX. > > Link memorizes the difference between VFO A and VFO B and maintains > VFO B at that difference while VFO A is being tuned. If you do A>B > before link, it will still be two synthesizers that are not locked, > just have the same current input parameters. In my case when I do this > I rarely hear the band noise spreading out into the band noise "sound > stage" needed for digging out weak discreet CW signals. > > Diversity is a phase lock between the two RX using the same set of > frequency generating sources for both RX. This always produces the > band noise sound stage. > > Note that the sound stage is not something generated in the K3. That > is done in our minds by the same mechanism that allows us to pick out > a single voice in a crowded noisy cafeteria. The band noise is spread > out around the "audio horizon" or "sound stage" in my "mind's ear". A > discrete signal is in one place on the sound stage. My mind easily > picks the discrete sound out of the spread-around noise. > > This is very much the same thing as listening to a stereo recording of > an orchestra that begins with audience buzz, which is all over the > audio horizon in my mind's ear. When the music begins I hear the > violins to the left, though spread out a bit. I hear the tuba at a > specific spot on the right. > > Once a K3 diversity RX operator has learned to use "sound stage" > diversity, it is easily an S unit advantage on RX for a station at or > in the noise that you can't see on the S meter. > > For me diversity is always on 160 through 40. Anything that craps > diversity, for me throws away an S unit. > > If you are not getting the sound stage trying to use diversity, you > really are not getting the benefit, and have some fun ahead of you > when you do. > > 73, Guy K2AV > > On Sun, Feb 15, 2015 at 9:15 PM, Tom Blahovici <[email protected]> wrote: > > Hi Joe, > > I guess there is some confusion then as to the function of Link. > > Myself, I thought it was solely there for diversity mode. > > So, how else would one use the Link function? What is its purpose? > > Thanks > > ______________________________________________________________ > > 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] > ______________________________________________________________ > 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] > > > > ______________________________________________________________ > 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] --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com ______________________________________________________________ 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]
