I agree. I once suggested to Wayne that Elecraft charge something for
feature upgrades after a certain point in order to provide a revenue stream
to justify them. I received a chewing out unmatched since I got caught
driving a jeep without a helmet. This is not part of the Elecraft
philosophy.
As
" Have we, in fact, established that this attenuator is enabled at any point of
the tune cycle? Because if not, then we're all spun up for nothing."
KAT500 Serial Command Reference Revised 8/18/2021 firmware version 02.00 says:
"ATTN Enable Attenuator GET format: ATTN; SET/RESPONSE format:
Try this
Original message From: "Roy Morris, Jr. via Elecraft"
Date: 12/15/21 4:41 PM (GMT-06:00) To: Elecraft
Reflector Subject: [Elecraft] LPA Mod for K3/K3S I
would like to see how these diodes are placed on the LPA board. Thanks for any
info on this. Roy Morris
I have contested from several locations with noise issues and I have also
not been able to find a NB/NR setting on my K3S that offers any improvement.
John KK9A
David Hachadorian k6ll wrote:
For 12 years I've tried to get any enhancement of s/n from the K3 IF/RF
NB and NR. I haven't seen
Have we, in fact, established that this attenuator is enabled at any point of
the tune cycle? Because if not, then we're all spun up for nothing.
Is it reasonable to believe that the attenuator was one of those design
elements that might have been deemed necessary at one time but then the
I would like to see how these diodes are placed on the LPA board. Thanks for
any info on this. Roy Morris W4WFB
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On the K3 I use AFX BIN mode (stereo speakers) which really cuts the
background noise to my perception.
Whatever other NR the K4 will have I hope there is an AFX binaural mode
also.
73,
Drew
AF2Z
On 12/15/21 15:11, Nate Bargmann wrote:
* On 2021 15 Dec 10:03 -0600, Ray wrote:
I am Not a
* On 2021 15 Dec 10:03 -0600, Ray wrote:
> I am Not a big fan of the K3 Noise reduction !
> NB work OK, but NR is Poor!
Sadly, I must agree and this is probably the most glaring deficiency in
an otherwise stellar radio. Fortunately, where I live now I am able to
control the noise for the most
On 12/15/2021 10:52 AM, David Gilbert wrote:
I applaud the persistence it must have taken you to come up with that
procedure, but it's actually kind of amusing to think about repeatedly
doing all of that during a contest.
If you know what you're doing, it can be done in a minute or two. I
I find both the NB and NR on my K3 to be moderately underwhelming, not
sure why. Ignition noise used to predominate in urban and suburban
areas and blankers like the one in the 75A4 were very effective. I
don't know what Detroit did, but I haven't heard ignition noise in
years. A general
At age 80, I decided to close the mountain shack and move the an “antenna-free”
location in the city. My much-enjoyed K-Line station is looking for a new home.
Here is what is included…
K3 Transceiver s/n 6832
Single receiver
0.5, 2.8 and 6.0khz filters
No internal ATU
I applaud the persistence it must have taken you to come up with that
procedure, but it's actually kind of amusing to think about repeatedly
doing all of that during a contest.
73,
Dave AB7E
On 12/15/2021 9:52 AM, Bob McGraw wrote:
The approach I use for the Noise Blanker is this.
I
Anybody know if they are less useless on the K4?
73,
Dave AB7E
On 12/15/2021 8:05 AM, David Hachadorian wrote:
For 12 years I've tried to get any enhancement of s/n from the K3
IF/RF NB and NR. I haven't seen one case where there is any
improvement under contest conditions. When the s/n
Mike K8CN wrote
*< It wouldn't have occurred to me to look atthe LPA stage as a source of
trouble, but ifthe TX power is ramping up slowly, then I cansee where the
ATU control algorithm isconfused by the change in power levels bothforward
and reflected. My ATU seems
Lots of good advice here. A major problem with the K3 NB is the way it
is described on screen and in the manual. There are two blankers, one
ahead of the crystal roofing filters, one after them. Each has multiple
tweaks. In contest conditions, I've found good noise reduction from
using the one
I have a similar issue with what is possibly the filthiest wall-wart in the
country. Unfortunately, our equivalent of the FCC failed miserably to do
anything to get it stopped, despite my offer to simply buy a new one and the
dear lady who owns it wouldn’t let anyone in to check.
I am now
The approach I use for the Noise Blanker is this.
I first activate the NB and then the Level. I start with the DSP OFF
and the IF OFF. I then adjust the DSP value for optimum results without
it destroying the quality of the signal. DO MAKE A NOTE OF THIS VALUE.
Then set the DSP back to
I am Not a big fan of the K3 Noise reduction !
NB work OK, but NR is Poor!
That’s My 2 Cents worth. Ray WA6VAB
From: Alan Higbie
Sent: Wednesday, December 15, 2021 7:46 AM
To: David Hachadorian
Cc: Reflector Elecraft
Subject: Re: [Elecraft] K3 Noise Reduction
I too was skeptical about finding
The problem of all signals distorted can be cleared up by adjustment. I
don't know which blanker you are using (RF or DSP), but try reducing the
blanker level until signals sound normal. Then strong noise pulses will
still be supressed.
The RF blanker also has three choices of pulse width in
I too was skeptical about finding ANY improvement to s/n ratio under
contest conditions.
A couple of years ago, I was confronted with some S-7 broadband
digital-like RFI while using my K3 in an extremely urban environment. But,
using BOTH NB and NR and fiddling with settings eventually allowed
I had the same issue with my K3s. Now that I have an FTdx101D, no more problems
with noise.
73
Carl Yaffey K8NU
614 268 6353, Columbus OH
http://www.carl-yaffey.com
http://www.bluesswing.com
http://www.timbrewolvesband.com
http://www.folkramblers.carl-yaffey.com
Http://www.clintonvillegrass.com
The K3/KRX3 combo has been sold. The PR6-10 is still available.
73,
Scott N9AA
On Tue, Dec 14, 2021, 5:39 PM Scott Manthe wrote:
> I have an Elecraft K3, SN3019, and a uninstalled KRX3 that I'd like to
> sell. I'm offering it here first, as this is where I originally picked
> it up.
>
>
>
For 12 years I've tried to get any enhancement of s/n from the K3 IF/RF
NB and NR. I haven't seen one case where there is any improvement under
contest conditions. When the s/n just starts to improve, the desired
signal is modulated and degraded by nearby signals to the point where
reception
I have that same issue...
I have some very dirty grow lights about two blocks from me. They are
dirty as they come... Splattering across 80-20 meters. The K3 has
never been able to adequately clean up the crud from them.
In defense of the NB/NR on the K3, the signals are on the order of S7
Last weekend during the 10 meter contest I was experiencing very loud
line-noise-like interference when my antenna was pointing south. I
tried both my K3's Noise Reduction and Noise Blanker functions, and was
unable to find any setting that gave useful relief. With the noise
blanker, in
I can't help with that error but you can download the firmware directly from
here:
https://ftp.elecraft.com/KAT500/firmware/
Put it in a local directory then point the utility to that directory and it
should show it is available for loading.
Andy, k3wyc
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