Hi Steve
I also seem to get the impression that the selected NR setting is not exacty
the same as the selected level within in the menu versus turning the DSP NR
on and off without entering the menu, if that makes sense.
What I am finding is that 2-4 when applied from within the menu,
Steve Ellington wrote:
I just had a CW QSO on a noisy 80m. Here's what I noticed with NR set for
F1-3. BW set for 2.5 kHz.
QRN very loud! I pushed NR. Band goes almost totally silent. Calling CQ
with
the bug was like being in TX mode but I was using QSK as always.
Wow...Nice
and
I have just installed 3.27 and the NR is a disaster. On turning it on there
is virtually no AF output even at maximum AF gain setting. I have turned the
K3 off and on but to no avail.
Also there are big birdies on 40m (I haven't checked any other bands) which
I am sure were not there before I
Joe:
I listended with a Heil ProSet last night... I will check
the impedance, dont know it offhand.
True, a mismatch would add to the effect.
-lu-
- Original Message Follows -
From: Joe Subich, W4TV li...@subich.com
To: 'Lu Romero - W4LT' lrom...@ij.net,
elecraft@mailman.qth.net
Thanks for the nice explanation Bill. It is effective but weird. Somone
needs to make a movie.
Steve
N4LQ
n...@carolina.rr.com
- Original Message -
From: Bill W4ZV btipp...@alum.mit.edu
To: elecraft@mailman.qth.net
Sent: Thursday, August 27, 2009 7:12 AM
Subject: Re: [Elecraft] [K3] K3
Do you have any RX EQ on? Is this CW or SSB? What bandwidth are you
operating at? Have you tried with AFX on and off? Plenty of audio
here.
73 Ian
On 27 Aug 2009, at 27August13:00, Barry Simpson wrote:
I have just installed 3.27 and the NR is a disaster. On turning it
on there
is
I also seem to get the impression that the selected NR setting is not exacty
the same as the selected level within in the menu versus turning the DSP NR
on and off without entering the menu, if that makes sense.
The NR is an adaptive filter. When you turn it off, it is completely
I have just installed 3.27 and the NR is a disaster. On turning it on there
is virtually no AF output even at maximum AF gain setting. I have turned the
K3 off and on but to no avail.
Were you tuned to a signal at the time, or just band noise? If just
noise, then the NR was doing its job.
Lyle:
Maybe a quick lesson on proper use of the NR filter would help us. Thinks
likeIf F1-1 doesn't work, do we go to F1-2 or F2-1 or should we skip a
few F's. Should we turn NR off then back on every time we make a change?
Does changing NR settings while receiving a cw signal matter or
I operate a lot on CW nets, with the b/w set to 700Hz, no EQ, AFX on,
and use the NR to increase the apparent S/N ratio, and also to soften
the effect of band noise on the ears. Before v3.25, this was
frustrating because the NR took appreciable time to build the filter,
and appeared to do so
Thinks likeIf F1-1 doesn't work, do we go to F1-2 or F2-1 or should
we skip a few F's.
Depends on the noise, the signal, the levels and the nature of the
artifacts of NR you best tolerate. F1-x builds sharper filters, while
F4-x typically has more attenuation...
Should we turn NR off
hi... i'm one of the folks who is less happy with the 3.27
implementation of NR than the 3.25. i've been trying to do a
'scientific' comparison of the two, so i can record the audio and
upload for others to hear/analyze (non trivial since band conditions
and QSO's don't seem to last between
I had latest beta (3.27) loaded and thought I'd save the configuration. It
failed with a prompt regarding EEPROM 000.013. I thought I'd reload the
firmware again (3.27) but it stopped, saying that it couldn't load MCU.
The K3 was frozen with MCU LD on VFO B and TX light flashing. It would
Gees. Thought I'd remember that it is almost always something simple. My
logger program was also running. Dumb. Anyway, all fixed and apologize for
the wasted bandwidth.
Gary W7TEA
W7TEA wrote:
I had latest beta (3.27) loaded and thought I'd save the configuration.
It failed with a
That will definitely cause a problem. :)
Glad you got it going. Please ignore my off-list email.
David, W4SMT
--- On Thu, 8/27/09, W7TEA gt...@mac.com wrote:
From: W7TEA gt...@mac.com
Subject: Re: [Elecraft] [K3] firmware load failure
To: elecraft@mailman.qth.net
Date: Thursday, August
In answer to Joe Planisky, here's my rehash on hash.
My K3 which is factory built still has some tuning hash but it's now at a much
lower in level, doesn't move the
s-meter (with or without preamp) and is only centered around 28000 +/- 5 KHz.
I can barely hear it now. I haven't added the h/w
I thought Lyle's email quoted below was very helpful:
The way the new beta NR works is:
Fx-y selects the length of the filter.
F1 = 121 taps, F2 = 91 taps, F3 = 61 taps, F4 = 31 taps
(The Beta 3.25 release used FIR filters of 61 taps.)
y selects values of
What Eric says is quite correct. Some of the confusion a few days ago was
around the fact that I had completely different issue surface right after
installing the hardware mod that suggested it was necessary to upgrade the
firmware if the hardware mod is done. That's not true.
The hardware
I loaded bata 3.27 yesterday have played with it on cw and ssb so far I
like what I hear the
NR is more to my liking adding the AFX is a nice touch to get the audio
to pop out a bit.
The bands are not the best here for me using a Hy Tower vertical as the
only HF antenna
I would say that 3.27
I find this to be a great improvement on SSB for weaker ones buried in the
noise.
With NR turned on to the F1-1 setting I could pull out the weak JAs and VK/ZLs
this morning on 40 SSB. It truly works well without to much of the hollow in
the tunnel reception. Turning up the NR settings
Prefer unbuilt if you have one that sitten around drawing dust.
Please e-mail direct !
Thanks and 73:
JerryN0JRN
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Help:
Lyle,
Is the noise reduction more or less aggressive with a larger
number of taps (length) of the filter?
73,
... Joe, W4TV
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Lyle Johnson
Sent: Wednesday,
Is the noise reduction more or less aggressive with a larger
number of taps (length) of the filter?
It is less aggressive with more taps. There is also a different
coloring of the audio.
73,
Lyle KK7P
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hi... thanks for the reply... yes, i read lyle's description of the
two filters, which is how i knew that the 3.25 filters all had an FIR
of 61 taps...
what i'm looking for (in order do to an honest A:B comparison between
3.25 and 3.27 on my rig) is what Fx-y on 3.27 would most closely
Hi John,
This is not a personal position - Its official current Elecraft company
policy. :-)
To be totally clear, if you enable 'VCO MD, SPI 2 for the VFO noise
reduction, you MUST ultimately make the corresponding h/w mod.
Its OK to test without making the mod to see if 'SPI 2' helps your
Hello All,
I built S/N 1354 from a kit , with FW 3.25 , I have
installed most of the mods.
I operate digi modes some of the time and I need to
set the shift to 1.25 instead of 1.50 to be centered
in the IF strip. It's been this way ever since I built
it. I'm not sure what I have setup wrong .
All
It's become obvious to me that the most of the full time CW ops on the
reflector were very happy with the fast responding, instant changing, very
aggressive filters on the Pre 3.25 NR. So long as you didn't choose a filter
that was too aggressive for your needs, I never found that I cut
FWIW, I strongly agree with N6MQL's suggestion.
Bill W5WVO
The Smiths (N6MQL) wrote:
Instead of trying to find a single NR DSP that would satisfy both
groups, which seems near impossible to do. Wouldn't it be best to
implement some way to have the OLD NR on CW mode, and then perhaps
Hi Ken. You can save two unique filter setups using the NORM knob.
1. First, hold NORM to clear any shift to give you a good starting point.
2. Now set desired WIDTH and SHIFT the FC to where you want it.
3. Now do a LONG HOLD of the NORM knob till you see SAVE. Rotate the knob
while you
Hi,
I have the 1 ppm xtal and want to do the #3 callibration option. I've read
the book and checked what I was doing several times. I also have the latest
firmware (3.27 beta) installed. I keep pushing 1 and I don't get the REF
xxCAL, it just doesn't seem to be an option.
What am I missing?
That feature hasn't been implemented yet.
73 de James K2QI
On Thu, Aug 27, 2009 at 3:14 PM, 4Z5TO 4z...@iarc.org wrote:
Hi,
I have the 1 ppm xtal and want to do the #3 callibration option. I've read
the book and checked what I was doing several times. I also have the latest
firmware (3.27
Some times you can't satisfy all the people all the time with one
road.
Truer words were never spoken!
I'm a full time CW operator (well, 99.9% CW, 0.1% digital modes.) I
played with the pre-3.25 NR quite a bit and I was never able to find a
setting that made a CW signal easier to copy,
Thanks.
I'm 2 for 2 now. Where did I miss that?
Ok folks, nothing to see here. Move along...
K2QI wrote:
That feature hasn't been implemented yet.
73 de James K2QI
On Thu, Aug 27, 2009 at 3:14 PM, 4Z5TO 4z...@iarc.org wrote:
Hi,
I have the 1 ppm xtal and want to do the #3
If you haven't already found the problem.
Another thing you can check is U2.
With the rig off, 3,4,5,6 11,12,13,14 should all read 100K ohms to VCC
pin(18)
With the rig on, these should all normally be at VCC voltage.
--
bw...@fastmail.net
I built my K2 some months back with the KNB2 option. The noise blanker has
never been effective against any type of noise. The MCU recognizes the
blanker, it draws the proper amount of current, but just doesn't seem to do
anything. Before drinking the Kool-Aid (TM) I was pretty much a
I built my K2 some months back with the KNB2 option. The noise blanker has
never been effective against any type of noise. The MCU recognizes the
blanker, it draws the proper amount of current, but just doesn't seem to do
anything. Before drinking the Kool-Aid (TM) I was pretty much a
I built my K2 some months back with the KNB2 option. The noise blanker has
never been effective against any type of noise. The MCU recognizes the
blanker, it draws the proper amount of current, but just doesn't seem to do
anything. Before drinking the Kool-Aid (TM) I was pretty much a
ok... this is something that other folks can absolutely test (grin)
i have audio feedback (button beeps) turned on in my K3 and i've been
playing with the 3.25 and 3.27 beta's
i just noticed that with 3.27 that when i either 'turn on' or 'turn
off' (momentary press) or long-press the NR button
I would like to still see some kind of APF filter to peak up weak cw,
I'm still always
looking for more volume or gain against the noise floor. For me its hard
to compare
something from a couple of months ago to what I have now in firmware but
for the
impressions or notes taken back with other
I have just installed the K3 VFO Tuning Noise Reduction mod and the K3
Automatic Front-End Protection mod in my newest K3. The mods went in well, but
on the NoiseTuning Reduction mod, I did find the two vias on the left (viewing
the RF board from the bottom) full of solder. I cut the 470 ohm
I am getting the following failure to load the latest firmware. To get the
load complete I tried sending only the new firmware. After several attempts
in each of the DSP loads, the data was finally accepted. Any ideas as to
what might be the cause... This is not the first time the difficulty
In a previous email I referred to the mod changing R8 on the RF board as the
KRX3 SubOut Connector mod. I was referring to the K3 IF Output Buffer Gain
mod. Sorry for the mistake. Roy Morris W4WFB
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Joe and all,
As I understand the changes, in the pre-3.27 NR situation, there were
audio peaks in the response envelope - so it worked very well (similar
to an APF) for some who used a CW pitch near the peaks, but there were
others who used other sidetone pitches and they were not happy with
I want to listen to my K3 with stereo headphones only.
However if I unplug my headphones, I'd like the internal speaker to turn on.
I studied this in the manual and am still not clear.
This is the way my CONFIG is set up:
CONFIG:SPKRS 2
CONFIG:SPKR+PH no
Is this correct?
Paul N4LCD
I want to listen to my K3 with stereo headphones only.
However if I unplug my headphones, I'd like the internal speaker to turn on.
I studied this in the manual and am still not clear.
This is the way my CONFIG is set up:
CONFIG:SPKRS 2
CONFIG:SPKR+PH no
Is this correct?
That
Eric,
First do a test to see if your NB is working at all. Remove the
antenna, turn on the Preamp, then tap on the case of Q21 with a
screwdriver. The taps will create impulse noise in the receiver which
should be blanked when NB1 or NB2 is turned on. Be careful to
differentiate between
Same thing happened here until I discovered I still had my virtual port
splitter running. Scared the heck out of me but all is well now. Funny how
those ports have to be correct!
David Fleming-2 wrote:
That will definitely cause a problem. :)
Glad you got it going. Please ignore my
QST's Product Review of the Flex-3000 is available to ARRL members at:
http://www.arrl.org/members-only/prodrev/pdf/pr0910.pdf
It's an interesting exercise to drag the Key Measurement Summary next to the
K3 and Flex 5K models. Wide and narrow blocking gain compression shows
about 10dB worse
Sorry you are having this experience, Bill. Could you turn Verbise
mode on and send me the loader dialog of the failing DSP1 load. The
utility should leave the dialog open on failing loads so that you can
copy the text into an email
TU
Dick, K6KR
Sent from my iPhone
On Aug 27, 2009, at
Hi Guys,
I have just upgraded to the latest Beta release, using the new NR algorithm.
In my opinion, it is the best it has ever been ! My only qualifier...I
only operate SSB mode.
73
Glenn
VK4BG
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Evening All
I think it's time for a bit more of the combined wisdom of the list
before I proceed.
The rig is a K2. It has all the internal modules except the ATU at
this point. I have successfully used both HRD and K2 Remote to control
the K2.
The RigBlaster Pro is several years old.
Hi Everybody;
It sure would be nice to take a peak at the W2 manual especially since it
is listed as shipping sometime between 2009-08/30 and 09/07.
73's, Bob K7HBG
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We're working on it right now. I'll post a preliminary version as soon
as we have it.
73, Eric
---
k7hbg @dslextreme.com wrote:
Hi Everybody;
It sure would be nice to take a peak at the W2 manual especially since it
is listed as shipping sometime between 2009-08/30 and 09/07.
73's, Bob
hi glenn... since i'm one of the SSB operating folks who is having
problems with 3.27 NR (but not 3.25) i'm wondering if you might
answer some questions:
1. can you tell me your rig serial no/when it was mfg
2. what setting(s) are you using under NR and do you have AGC Fast
or AGC Slow?
3.
Where can I buy the book?
Let's start with SSB on 3.27 (for me at this time). Will somebody send me the
non-factory settings you have changed and what you have them set to that give
you the what you see as the best setting (at any particular instant). I know
this will change by conditions,
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