[Elecraft] K3 DSP processor speed

[Charlie T, K3ICH]

Simple Slop Bucket.

Something Seems Broken.

Sure Sounds Bad.

Start Sending Better.


73, Charlie k3ICH




What is SSB an acronym for???

Jim
W6AIM


.

-----Original Message-----
From: Elecraft
[mailto:elecraft-bounces at mailman.qth.net] On
Behalf Of Edward R Cole
Sent: Tuesday, November 10, 2015 10:44 AM
To: Elecraft at mailman.qth.net
Subject: Re: [Elecraft] K3 DSP processor speed

Topic has digressed to NR:

Simple question.  Is all this feedback on how good
or how bad NR works about reception of CW (or does
it apply to SSB?).  Only time I really need NR is
when local noise overwhelms normally strong SSB
(e.g. signal is running
S8-S9 and noise rises up to S8-S9.  I find NR will
lower the s-meter to about S6-S7 under those
conditions but the audio is distorted by NR such
that intelligibility is lowered - ergo no help to
copy the signal.  I've tried several NR settings
with some being better but none helping me
understand speech better than running without NR.
Often NB works better than NR, but NB also tends
to distort audio.

Using NR with normal noise conditions it is never
helpful for improving intelligibility (for me).  I
will admit that I have extreme hearing issues that
make ordinary speech a challenge.  So any
processing that imparts distortion reduces my
ability to understand speech.

It seems to me that NR appears to experience IMD
with the noise frequencies.

To be fair I have not had success using NR with
other brand radios, either.
The only NR that works for me is in my expensive
Bose airline headset.  That is working on
different nature of noise (probably).

To be fair I represent 0.2% of the population that
NR probably is ineffective.  I have it selectable
in my hearing aids and often find it is not
helpful, either; rejects noise from behind me but
clarity of sound is impacted.  In a crowded room
full of babble of the multitude, I select the
TV/music mode which provides wide-frequency
response and I turn vol up to max. <helps a
little>

73, Ed - KL7UW
http://www.kl7uw.com
     "Kits made by KL7UW"
Dubus Mag business:
     dubususa at gmail.com

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