K3 Settings for NR using 3.3.27

[Glenn McNeil]

Hello List and Robin,

Robin asked for some of my settings that I use on my K3 regarding the
new NR in Firmware 3.27, and I thought that it may help the Group to
post them here.

These are answers to Robins questions, so keep this in mind.

AND...I use my K3 almost 100% as an IF for VHF Bands, so it is being fed
from external XV's , not an HF antenna. The K3 does see HF use, but at
present I am using a new toy..a Thomson CSF TRC300 HF Military Manpack,
but when that novelty wears off, I'll be back on the K3.

Back to Robins questions..

My K3 in Serial Number 63, with NO modifications at all. I am about to
do the lot when I get my K144XV shortly, as the radio will be open for
that installation.

AGC is set for SLOW, and NR for F1-2 normally, or sometimes F1-4

With the NR OFF, I see about S1-2 Noise ( listening on 144 Mhz ). The
Two Meter Band at this QTH is slowly getting noisier, with all manner of
crap appearing on a daily basis from what was, 17 years ago, an almost
silent Band :(

I usually use the 2.7 Khz Filter ( 5 Pole ? )

BW/SHIFT/Hi/Low Settings are..  FC 1.5 , LO 0.15 , Hi 2.85 Filter 2.7 Khz

When I turn NR ON, it is an almost instant "quiet " effect. There is a
perceptible " echo " effect, but not annoyingly so...but I suppose this
is a very personal opinion...it may annoy the hell out of others. I have
found that DSP NR is not a magic Pill...it can help resolve a very weak
signal, but is not a miracle worker.

Most of my listening is through external Stereo Speakers ( Computer type
add ons, powered ) but for really weak stuff, I use those EX29 Extreme
Isolation H/Phones, that are excellent.

AFX is usually OFF, but I have found on occasion , that it helps to turn
it ON.

AGC is set as...DLY SOFT , HLD 0.02 , PLS NOR , SLP 014 , THL 006 , -F
120 , -S 020

RX Equalizer Curve is flat...after reading recent comments about NR etc..

That should answer all of Robins questions...and fire away with any more
if you have them.

 From a weak signal VHF Operators ( SSB ) point of view, I have always
thought that the NR function was good ( early days...the echo thing
annoyed me, but comparing the K3 to various Icom DSP NR Systems , it was
streets ahead ) to excellent in more recent times. As I was typing this
reply, I had a call from a Station on 144 Mhz SSB who is about 300k
away, and it was a 5/1 type signal...I engaged NR at F1-4 and found I
had to back off to F1-1 , which then made it just a voice with little to
no white noise content...a slight echo, but much easier to listen to
minus all the Band noise.

73
Glenn
VK4BG





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