Mixing BOTH receivers into BOTH ears is not the same and is simply
summing the noise, effectively erasing the advantage of the DX operating
a split frequency!
I can't speak for SO2R contest operation but I've been using a dual
receiver setup for DXing for many years. I initially used separate
receivers and an external audio mixer, replaced by a TS-950SDX, followed
by an Orion and now the K3. The 950 and Orion both allow a mix of the
main receiver in BOTH ears while maintaining the sub ONLY in the right
ear. I USED THEM THIS WAY!
My mental image of this setup is of having the DX station in the "middle
of my head" while the pileup remains "outside of my head" (only on the
right side). Having the bedlam of the pileup "outside of my head" makes
it easier to ignore this "noise" at the times when I am concentrating on
the DX station's transmissions. There is much less need to actually
decipher signals in the pileup but only to recognize that you are
listening to the station that the DX is currently working as you are
hunting for his current QSX frequency. I found this feature to greatly
improve my ability to decipher a weak DX station while simultaneously
following the bedlam of the (split frequency) pileup. As I recall, the
950 also allowed the main to mix at a reduced level into the other ear
which didn't "center" the primary receiver in my head but still enhanced
the ease of copy.
Using the K3 is great since the second Rx is the same quality as the
primary Rx, unlike my previous two radios. Their secondary receivers
were inferior to their main and prone to numerous distortion products
which made the pileup bedlam even worse. Since getting the K3 second Rx,
I've been trying to retrain my brain to copy the DX station by using
just my left ear (signal outside of my head) but it's obviously not as
easy as when the copy signal is in the "middle of my head". If code
space permits, it would be really great if the K3 did this function
internally as a user option. Obviously, Kenwood and TenTec also found
this feature desirable. Otherwise, I will probably just build an
external mixer box with headphone amp so I can get the primary signal
centered in my head again.
Thanks to Elecraft for an already superb radio!
...Mike
Joe Subich, W4TV wrote:
If you must pollute the audio from one receiver with audio
from the other receiver, add a 5 to 10K pot between the tip
and the ring of your headphones and adjust it for the level
of pollution you need.
There is no need for Wayne (or probably Lyle) to design
crosstalk into the DSP process.
73,
... Joe, W4TV
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of cloud runner
Sent: Sunday, November 16, 2008 11:03 AM
To: [email protected]
Subject: [Elecraft] K3: listening to both rcvrs
for what it may be worth...
For my pair-of-K2's in SO2R, I have routed the audio in such
a way that I have a balance control with the audio from the
two radios. I call it a mixing control. I find that
"optimum" is achieved when the full strength audio is in one
ear, and that same audio is present, but weak in the other
ear. I reason that when the audio goes to one ear only, the
content must get to the other hemisphere of the brain within
brain circuitry. When it is routed to both ears, now both
hemispheres get the information for interpretation at the
same time. Making it strong in one ear and weak in the
other, reversed for the other channel, lets me know which
rcvr I am hearing, while brain interpretation is at full speed.
and so, Wayne...
I think that there must be a firmware way either by routing
to a panel pot, or probably more simply in a menu, by which
the operator can select either complete channel isolation, or
both channels to both ears, but with one ear X DB down from
the other. (I can't say how much down is best,but I find
that it is enough when I can barely notice it. All of a
sudden copy is MUCH easier). Give it a thought because of
the above, I, at least, am quite convinced after a lot of
usage with a pair of K2's in SO2R, that is a much better
arrangement for copying CW from the two channels.
with much appreciation for this fine radio,
73, Fd - KT5X
K2 # 0700
K3 # 0144
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