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
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