I really enjoy my K3s. That said, I agree with K9MA's post that "I have never
found the K3 noise blanker to be effective". Though I would probably modify
the word "never" to " very seldom".
I realize that a great deal of work has gone into making the K3 NB all it can
be but it needs
Hello all..This AM on 160 meters there was a station CQing on 1.820.6 with
a fundamental freq signal strength of S9 on my K3. I also found (with the NB
on) that I could hear him Q5 but very weak on 1.810.6 and the same S 0 reading
but perfectly Q5 on 1.830.6. I turned the noise blanker
One other note - I see you posted to Elecraft and topband reflectors on your
post. Please do not cross post when posting to the Elecraft list as that in-turn
causes a flood of email to the other list and back to here, including bounce
messages from non-members that fill our admin emaibox.
73,
Hi Larry,
[This response is posted only to Elecraft Reflector. Posting to more than
one reflector with the same email post gets you 1) dunned by the Elecraft
Admin -- already done by Eric 2) dunned by experienced general readership
of all reflectors, who long, long ago figured out cross-posting
to kill much of the unwanted hash.
73 Gene, N9TF
K3S 10057
- Original Message -
From: "Guy Olinger K2AV" <k2av@gmail.com>
To: "Larry - K1UO" <k...@tds.net>
Cc: "Elecraft Reflector" <elecraft@mailman.qth.net>
Sent: Tuesday, Decembe
What noise blanker settings are best for the removal of lightning
static? There must be some - maybe?
My TS480 does a far better job of cleaning up the static than does the
K3. Already reduced the RF Gain and use the ATT. Then I tried all kinds
of setting - no go.
Anyone have a magic pill on
On Tue, Mar 12, 2013 at 5:31 PM, Bruce McLaughlin bmcla...@bex.net wrote:
Not only is the noise blanker outstanding but the noise reduction also works
extremely well
=
I have to add my $0.02. The Spratly Island guys (9M4SLL) have been
very weak here, never more than S3, and to
I have to say that the NB and DSP have been the turning point for me.
Until this experience, I have not really been very positive about the
K3. Now - well, pass the Kool-Aide! My backup rigs will eventually be
hitting the road and the proceeds used for a the purchase of a second K3.
Those
OK, here is another testament to the NB in the K3.
I have been plagued by an intermittent local noise source on 2m which
is so strong that it renders contacts 15 miles away nearly impossible
to copy (on SSB). I made a digital copy of the audio and sent it to
a receiver engineer in Sweden
Just had to mention that the K3's noise blanker set at t1-1 is excellent
for taking out a distant electric fence without causing any apparent
degradation to the received signal. It was a pleasant surprise, as most
noise blankers that I have experienced cause all kinds of receive problems.
: [Elecraft] K3 - noise blanker works fine
Just had to mention that the K3's noise blanker set at t1-1 is excellent
for taking out a distant electric fence without causing any apparent
degradation to the received signal. It was a pleasant surprise, as most
noise blankers that I have experienced
] On Behalf Of Chad Wasinger
Sent: Tuesday, March 12, 2013 5:26 PM
To: Bill Clarke; elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 - noise blanker works fine
My two cents..
I find that I run in T1-7 for a lot of the power line noise I hear on 2
meters. Absolute fantastic job at removing
I too have a new noise at my no noise qth. I'm not using the dsp NB but the
I.F. Noise blanker set to MED4 and totally takes it off the speakers AND off
the s meter.
Good show, Elecraft.
Mike R
Play me some fiddle, but no stinkin' violin!
Amateur/Ham Radio KE5GBC
HF Echolink mobile
Thanks Rick - well done!
From: Rick Stealey rstea...@hotmail.com
To: elecraft@mailman.qth.net
Sent: Thu, April 26, 2012 9:08:33 AM
Subject: [Elecraft] K3 Noise Blanker video
I made a 2 minute video this morning showing how the K3 pulls out a 75 meter AM
QSO
I made a 2 minute video this morning showing how the K3 pulls out a 75 meter AM
QSO
that was covered by ugly line noise.
Also see how the FT-1000MP tried to cope with the noise, but came up short.
http://www.youtube.com/watch?v=PpC5RYvh5oUfeature=youtu.be
Rick K2XT
The K3 has still one of the best Noise Blankers around. With all the handles
available to adjust, I have not found any type of noise at my qth that
cannot be at least reduced to make a copy intelligible. On signals, it is so
impressive with those that literally cannot be heard w/o the blanker and
While I've never met a Noise Reduction implementation that I've liked on
SSB, I'll confess to not had broad exposure to a lot of different ones.
However, I'll join you in your finding on the Noise Blankers. I've only
found the trade-off between Noise Blanking and distortion introduced to be
Am I the only one who find it difficult to use the Noise Blanker and Noise
Reduction controls on the K3? Maybe it can't be improved but it sure doesn't
work as well as the Ft5000. In my noisy location it sure would be nice if
these two features on the K3 could be improved. 73, W0SZ
Every morning a young guy in the neighborhood drives by in his wreck. Just a
few minutes ago, as he drove by, I was fortunate to get an S meter reading
of S9 from his bad ignition system. I was listening 20 meters using my K3
and a Hygain TH11 beam. I setup my function generator to get an S9
I made an attempt to plot the noise blanker performance and log the results
in an Excel spread sheet. I found that the test was in valid so I used a
different approach.
The test involves using a function generator that's built into my Agilent
DSOX3024. The generator is set for pulse mode with
I made an attempt to plot the noise blanker performance and log the results
in an Excel spread sheet. I found that the test was invalid so I used a
different approach.
The test involves using a function generator that's built into my Agilent
DSOX3024. The generator is set for pulse mode with
While setting up the test I found a strange anomaly. If the pulse amplitude
went above 260mv, the overall noise floor increased. I’m not sure why this
happened but I suspect it has something to do with the DSP.
When the NB was engaged, the pulse noise was reduced but the overall noise
floor
Using an Agilent DSOX3024 oscilloscope, with a built-in function generator,
The generator was set for 200mv amplitude and the pulse width was adjusted
for minimum interference at each NB setting. The generator was connected to
the K3's RX-IN port.
On some settings and pulse widths the noise
After adjusting a noise blanker on another radio, I decided to test K3's
blanker. The captured screen from my Agilent oscilloscope shows the K3
blanker turned off (the captured waveform in the background) and with the
blanker turned on (the active waveform) the pulse was reduced. The Agilent
Further to recent postings I've reverted to F/w 4.14 for test purposes and
find that distortion of louder SSB signals seems to start at a higher
setting of the DSP noise blanker than in f/w 4.22. For example I can turn
the DSP blanker up to 1-6 with minimal distortion under 4.14, but only to
with neighbor's devices..
Jim K4JAF
- Original Message -
From: Edward Dickinson, III softb...@windstream.net
To: Elecraft Reflector Elecraft@mailman.qth.net
Sent: Friday, November 26, 2010 10:55 PM
Subject: [Elecraft] K3 Noise Blanker (was K3 Plasma TV and other non
OTjunque)
I operate
I operate in a sometimes very high QRN area...45 y.o. Electric Distribution
System in the area. Unblanked Noise has recently and regularly been in the
10 over S-9 realm on 40 meters.
Can improvements be made to the K3 Noise Blanker? Firmware..? Hardware..?
73,
Dick - KA5KKT
Is there a way to override the fact that the NB needs to be turned on again
each time you change bands? My AGC On/Off setting stays the same regardless
of band changes or powering the rig on off - I'd like the NB to stay in
the position last used when changing bands...
Thanks,
John Harper
See CONFIG: NB SAVE menu item.
73, Paul W8TM
John AE5X asked:
Is there a way to override the fact that the NB needs to be turned on again
each time you change bands? My AGC On/Off setting stays the same regardless
of band changes or powering the rig on off - I'd like the NB to stay in
the
John and all,
The best way to determine a radio's capability to retain settings or
alter its default behavior is to read the Menu Settings. If you don't
have the latest manual, but you do have updated firmware, you will need
to download the latest manual from the Elecraft website.
In this
Got it now!
John Harper
http://www.ae5x.com/blog
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Hi
When the K3 was first released, the noise blanker was very effective on the
Chinese Radar on 40 meters. This radar was very active on the CW end of 40
meters. You could totally eliminate this radar signal with the K3's noise
blanker.
As the firmware was updated, the K3's noise blanker
Hi John,
Do you check all possibilities of the NB and no-one of those are able to block
this Radar ?
We are facing time to time in my area such problem and had always founded a
reliable position to minimize it, but may be the today's NB is less effective,
I have no experience on it and I'm
As the firmware was updated, the K3's noise blanker seemed to become less
effective or almost had no effect at all.
I just checked the source codec files of the DSP Noise Blanker back to
May of 2008 - absolutely no change has been made to the algorithm,
*except* the most recent beta which
As the firmware was updated, the K3's noise blanker seemed to become less
effective or almost had no effect at all.
I just checked the source code files of the DSP Noise Blanker back to
May of 2008 - absolutely no change has been made to the algorithm,
*except* the most recent
Lyle Johnson wrote:
As the firmware was updated, the K3's noise blanker seemed to become less
effective or almost had no effect at all.
I just checked the source codec files of the DSP Noise Blanker back to
May of 2008 - absolutely no change has been made to the algorithm,
Living in Hawaii gives one a real opportunity to test the NB on the
Hainan radar on 40 meters
and other freqs as well...
The latest beta has an improved DSP noise blanker that may be more
effective.
73,
Lyle KK7P
__
Elecraft
On Tue, 23 Mar 2010 21:31:32 -0400, Ron W3ZV w...@verizon.net wrote:
From page 25 near the bottom of the left column. Found by searching
for 'blanker' with the PDF reader search function...
The NB icon will flash slowly if the I.F.
blanker setting is too high for the present signal
conditions.
My noise blanker was blinking randomly and intermittently. I know it was
complaining about something I was doing, but what? If its in the manual,
I missed it. Any help?
Ron W3ZV
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Home:
Its clearly outlined on page 25 of the manual in the section titled
Noise Blanking. Look for the info icon.
http://www.elecraft.com/manual/K3_Owner%27s_Manual_Rev_D6sm.pdf
~Brett
On Tue, 2010-03-23 at 21:31 -0400, Ron W3ZV wrote:
My noise blanker was blinking randomly and intermittently. I
I just noted that my noise blanker has an S-unit of insertion loss.
Anyone else see this?
Wes N7WS
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Yes...
73,
Dick - KA5KKT
I just noted that my noise blanker has an S-unit of insertion loss.
Anyone else see this?
Wes N7WS
Thanks. Too bad.
--- On Sun, 1/31/10, Edward Dickinson, III softb...@windstream.net wrote:
From: Edward Dickinson, III softb...@windstream.net
Subject: Re: [Elecraft] [K3] Noise blanker insertion loss
To: elecraft@mailman.qth.net
Date: Sunday, January 31, 2010, 2:27 PM
Yes...
73,
Dick
I just noted that my noise blanker has an S-unit of insertion loss.
I measure 2.0 dB (AGC OFF, using AFV/dBV internal functions and
monitoring a steady nominal S5 carrier on 6 meters).
73,
Lyle KK7P
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Home:
I just got done using that feature to measure filter flatness for
someone... Gotta admit thats a VERY handy feature!
~Brett
On Sun, 2010-01-31 at 16:31 -0800, Lyle Johnson wrote:
I just noted that my noise blanker has an S-unit of insertion loss.
I measure 2.0 dB (AGC OFF, using AFV/dBV
Nearly the same here (-2.2dB), but only when the IF NB is used. No
loss at all with just the DSP NB engaged.
73
--
Joe KB8AP
On Jan 31, 2010, at 4:31 PM, Lyle Johnson wrote:
I just noted that my noise blanker has an S-unit of insertion loss.
I measure 2.0 dB (AGC OFF, using AFV/dBV
k...@wavecable.com
Subject: Re: [Elecraft] [K3] Noise blanker insertion loss
To: Wes Stewart n...@yahoo.com
Cc: elecraft@mailman.qth.net, IIIEdward Dickinson softb...@windstream.net
Date: Sunday, January 31, 2010, 5:31 PM
I just noted that my noise blanker has an S-unit of insertion loss.
I
Correct. You can turn blanking on with the front panel switch and go to the
setup function and dial it in and out with the knob and listen for the relay
click.
--- On Sun, 1/31/10, Joe Planisky jp...@jeffnet.org wrote:
From: Joe Planisky jp...@jeffnet.org
Subject: Re: [Elecraft] [K3] Noise
When using the NB, if the IF blanker is enabled at any setting, I lose most of
the signal. The DSP blanker works as expected. What should I check?
Howard..K2HK
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Home:
Snip
A six cylinder diesel doesn't have ignition noise. What noise are you
comparing against? 73, Guy.
End Snip
I beg to disagree. The computer controlling many diesel engines today produce
noise as do the electronic injectors etc.
Commercial vehicles may use split system style air
Ignition noise is very specific: cylinder fire timed very short
duration pulse noise with an extremely high peak to average signal
value without a signal frequency center, sometimes adversely affecting
frequencies continuously from below AM broadcast through UHF. Back in
the day I can remember
I have power lines at approximately 150 meters from my QTH. The only thing I
don't like about the NB is that every time you switch the radio off and on,
you have to engage the NB again. I wish it would stay on permanently since
it's very effective and doesn't seem to have any down sides.
73,
Maarten,
In the menu: NB Save.
Switch that to on. That will solve the problem.
73 Arie PA3A
Verzonden: zondag 20 december 2009 10:08
Aan: Eric
CC: py...@terra.com.br; elecraft@mailman.qth.net
Onderwerp: Re: [Elecraft] K3 noise blanker
I have power lines at approximately 150 meters from my
...@terra.com.br; elecraft@mailman.qth.net
Onderwerp: Re: [Elecraft] K3 noise blanker
I have power lines at approximately 150 meters from my QTH. The only thing
I
don't like about the NB is that every time you switch the radio off and on,
you have to engage the NB again. I wish it would stay
I use my K3 only for 6 meter work, but I have been unhappy with the
performace of the noise blanker for pulse spikes.
no matter how I adjust the DSP or the IF blanker I cant seem to bank out the
pulses.
I can take out the power line type buzz but not the sharp spikes
When playing with the IF
I can confirm Lance's statement that the K3 noise blanker is excellent! I used
it with quite aggressive settings to wipe out some impulse noise on 6m during
the Geminids shower. That allowed me to run wsjt and work a number of
stations.
73
Eric WD6DBM
About to begin construction of an
Good morning all
Almost finished putting the K3 all together but last night I did notice while
putting the NB board on the 8th pin from the left was missing. I ended up
plugging it into the main board but will wait to find out if this is
intentional or defective before I power up the unit.
Well, according to the K3 schematic, pin 5 of the connector shows 'no
connection'. This would be the 8th pin from one end.
Bob NW8L
On Wed, Dec 9, 2009 at 4:14 AM, Mike Weir ve3...@hotmail.com wrote:
Good morning all
Almost finished putting the K3 all together but last night I did notice
I have not noticed before but the noise blanker does not work on the KRX3
whereas the noise reduction does work. Is this a fault with my particular
rig or is that the way it should behave ?
Barry VK2BJ
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Home:
Have you configured your sub rx to have a noise blanker? I think you
have to go into the menu for the KNB3 and then hit sub and turn that on.
Then I'm not sure if you have to also use BSET to enable it or not but
this is at least a thought of something to check.
~Brett
On Fri, 2009-08-21 at
Thanks for the suggestion Brett but it doesn't work !
73
Barry VK2BJ
-Original Message-
From: Brett Howard [mailto:br...@livecomputers.com]
Sent: 21 August 2009 09:13
To: Barry Simpson
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 Noise Blanker
Have you configured your sub
@mailman.qth.net
Subject: Re: [Elecraft] K3 Noise Blanker
Have you configured your sub rx to have a noise blanker? I think you
have to go into the menu for the KNB3 and then hit sub and turn that on.
Then I'm not sure if you have to also use BSET to enable it or not but
this is at least a thought of something
I have noticed some strange behavior in the K3 regarding the noise
blanker (NB) and the sub receiver. If I have the sub receiver turned
off and am listening to the main receiver with the noise blanker turned
on, then enable the sub receiver, the noise blanker is turned off in the
main
:02
Aan: Elecraft@mailman.qth.net
Onderwerp: [Elecraft] K3 noise blanker behavior with sub receiver
I have noticed some strange behavior in the K3 regarding the noise
blanker (NB) and the sub receiver. If I have the sub receiver turned
off and am listening to the main receiver with the noise
From time to time I have a very strong powerline or other impulse noise or
noises. K3 sometimes takes care of it sometimes not. I general, I have a
feeling that NB is IC-7000 is a bit better although K3 does well with some
types of noise that IC7000 cannot bite with the DSP NB.
NB takes care of
All -
One of the reasons for purchasing a K3 over, say, an Icom IC-756ProIII was
that the ProII I used to have had a noise blanker button, but it never
seemed to actually do much.
Sadly, I'm in the midst of several severe power line noise sources (the
power company is getting to them as they
Gary Smith wrote:
I have a Corsair II whose noise blanked usually does a fair job of
My question for this forum is to ask how satisfied you are with the
noise reduction in the K3 as opposed to your experiences with other
You are confusing two different concepts. I believe the K3 supports
Another question for K3 owners:
I have a severe case of RFI which is intermittent and I wrote about
it in a post to the RFI forum. You can hear an example of it here if
you wish, it's less than a meg in size:http://doctorgary.net/QRM-
1.mp3 Not to go into much detail on the specific RFI here
At 09:20 AM 10/10/08, you wrote:
I have a severe case of RFI which is intermittent
Gary,
It sounds like you need the power company more than an NB. I had
noise just like that, intermittent. I turned out to be a transformer
on a power pole. It could be arcing due to a faulty power line
With over 200 on 160 from this 80 ft. wide city lot I take a real interest in
noise blankers. A few days ago my friend gave me his K3 kit to build for him.
s/n 1487 2.21 firmware with 2.7khz, 1.0 khz, .400 khz filters. His 2nd rx still
on order.
Tonight I have it together except for the 100w
I've added a third page of K3 performance measurements to my web site
this evening.
http://www.cliftonlaboratories.com/elecraft_k3_noise_blanker_and_crystal_dsp_filtering.htm
Four topics are covered:
1. IF noise blanker
2. Linearity of DBV function
3. Frequency domain filter measurements
4.
Jack,
Thanks for posting all this data. Very interesting. (At least to a
data-junkie engineer. ;=)
Al N1AL
On Fri, 2008-08-22 at 16:14, Jack Smith wrote:
I've added a third page of K3 performance measurements to my web site
this evening.
On Wed, 20 Aug 2008 11:55:54 +0200, Petr Ourednik [EMAIL PROTECTED] wrote:
Hi,
My antennas are really close to electric fence (just few metres)
so the pulses on all bands with K3 are over S9+20dB !
Ouch!
Solution 1:
Take one pickup truck and tie the back bumper to the fence with an
Solution 4:
Remind the neighbor that interference from an electric fence is not
permitted. Even though such interference falls under the umbrella of
incidental radiation, it still must not interfere with the operation
of a licensed radio station. There are some fairly recent (within the
Modules, etc.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Tom Childers, N5GE
Sent: Thursday, August 21, 2008 3:42 PM
To: Petr Ourednik
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] noise blanker
On Wed, 20 Aug 2008 11:55:54 +0200, Petr
Hi,
according to preview discussion on noise blanker of K3 I decided to
write few words also as I have lot of experiences with that I guess...
My antennas are really close to electric fence (just few metres)
so the pulses on all bands with K3 are over S9+20dB !
A few points as the results of
On Sun, 17 Aug 2008 21:30:26 +0100, Stephen Prior wrote:
The NB is, it seems to me, no better than many others I have used
(eg TS-850) and the NR does not seem, to me at least, to be any better
than that on the TS-480 this K3 replaced.
That's not surprising, and I'm not complaining -- I'm just
of the
transceiver world.
73
Craig
VK3HE
--- On Sun, 8/17/08, Stephen Prior [EMAIL PROTECTED] wrote:
From: Stephen Prior [EMAIL PROTECTED]
Subject: Re: [Elecraft] K3 noise blanker
To: Bill W5WVO [EMAIL PROTECTED], Jim Brown [EMAIL PROTECTED],
elecraft elecraft@mailman.qth.net
Date
Stephen Prior wrote:
This is a 'me too'.
[snip]
But, the NB and NR
have not lived up to my (maybe unrealistic) expectations.
I have never made much use of the noise blanker of any radio. It never made
a difference to the kind of noise I experience, which is a bit like a
close-up
I am the happy owner of K3 #340. I also own a Kenwood TS 830S, which is one
fine radio, even in 2008 (see Sherwood's tables for performance figs.).
However, I have never had much success with the 830's noise blanker, and
usually don't bother to turn it on; whereas with the K3's noise
All,
I''ve been playing with my K3 (#1255) for a week now and I'm getting the
feel of the controls. Everything is OK but I'm still working on the
settings of the NB and the NR.
Firmware 2.23 / 1.88
Now about NR.
I receive a S9 pulse from an electric fence. Getting rid of this was
easy with
-
Onderwerp: [Elecraft] K3 noise blanker
All,
I''ve been playing with my K3 (#1255) for a week now and I'm getting the
feel of the controls. Everything is OK but I'm still working on the
settings of the NB and the NR. Firmware 2.23 / 1.88
Now about NR.
I
-
Onderwerp: [Elecraft] K3 noise blanker
All,
I''ve been playing with my K3 (#1255) for a week now and I'm getting the
feel of the controls. Everything is OK but I'm still working on the
settings of the NB and the NR. Firmware 2.23 / 1.88
Now about NR.
I
On Sun, 17 Aug 2008 10:10:06 +0200, Arie Kleingeld PA3A wrote:
pulse is very much suppressed (not totally) in the K3 ! Wow.
Yes, but what is NR and NB doing to signals you're trying to copy?
It's easy to fool yourself about how well it works when listening
ONLY to band noise. To be useful,
Jim Brown wrote:
Yes, but what is NR and NB doing to signals you're trying to
copy?
It's easy to fool yourself about how well it works when
listening
ONLY to band noise. To be useful, the NB/NR must suppress the
noise
while not doing too much damage to the signal you're trying to
copy.
So
This is a 'me too'.
Having, in waiting for my K3, read all sorts of accolades for the NB and NR,
I feel, now that I have the radio in front of me, somewhat deflated. The NB
is, it seems to me, no better than many others I have used (eg TS-850) and
the NR does not seem, to me at least, to be any
Hi,
One of the main reasons for me buying the K3 was the demonstrated ability to
eliminate pulse noise emanating from power lines and ignition noise (I
listened to before/after audio clips demonstrating this on the web). The NB
is very effective and does not distort signals at all unless they
On Sun, Aug 17, 2008 at 4:30 PM, Stephen Prior [EMAIL PROTECTED] wrote:
This is a 'me too'.
Having, in waiting for my K3, read all sorts of accolades for the NB and NR,
I feel, now that I have the radio in front of me, somewhat deflated. The NB
is, it seems to me, no better than many others
Having, in waiting for my K3, read all sorts of accolades
for the NB and NR,
I feel, now that I have the radio in front of me, somewhat
deflated. The NB
is, it seems to me, no better than many others I have used
(eg TS-850) and
the NR does not seem, to me at least, to be any better
than that
Hi Knut,
Well interference is a very personal thing of course, and I suffer here from
power line noise too, especially when it is damp which is pretty much all of
the time. Global warming does not seem to have reached the south western
tip of the UK yet- we've had the wettest, coldest summer wx
that were less than 1 kHz
apart.
Rob
NV5E
Date: Sun, 17 Aug 2008 21:30:26 +0100
Subject: Re: [Elecraft] K3 noise blanker
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]; [EMAIL PROTECTED]; elecraft@mailman.qth.net
CC:
This is a 'me too'.
Having, in waiting for my K3, read all sorts of accolades
Knut -
Regarding NR and DSP, check out the excellent (and WAY UNDERUTILIZED)
K3 forums and wiki at:
http://www.zerobeat.net/mediawiki/index.php/K3_DSP
73,
Steve NN4X
On Sun, Aug 17, 2008 at 5:03 PM, ab2tc [EMAIL PROTECTED] wrote:
Hi,
One of the main reasons for me buying the K3 was the
Mike Warden wrote:
When I am listening to any SSB signal (or AM signal) and I engage the Noise
Blanker (NB) function, both the S-Meter reading and the audio drop way down.
For example, if I am listening to an SSB signal at S-9 and have the audio
set at a moderate level, engaging the NB IF
I have Elecraft K3 Serial # 924 (kit) and, after a very straightforward
assemble, test, and calibration, everything appears to be working perfectly,
except for one small concern that may or may not be a real issue. Any
advice would be appreciated.
When I am listening to any SSB signal (or AM
You can try switching off a suspected street lamp by beaming its
photocell with a laser pointer. The photocell is located on top of the
lamp housing. It is directional, usually oriented toward the north
(but not always) so you would have to spot it with the laser from this
particular direction.
I ordered my K3 in June of 2007 after a strong local noise level started
at my Fargo ND QTH. (That was the factor that convinced me I needed a
K3). The noise went away for a few months about the time I got my K3 so
while I was pleased with how the K3 took care of the normal noise of the
city I
I've noticed the same. Since local noise that I can't cure (yeah, I
could write to the FCC, but I'm not supposed to have antennas anyway,
so they could just write tol the HOA) is my biggest problem, I want a
rig that will help me work through it. I still have a lot of side by
side testing to do
Hi Ken,
I used to be the line noise tech for my power company
employer ...
Touch lamps are a seldom-thought-of source of line noise.
Wall-warts, too.
73! Ken Kopp - K0PP
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Ken Kopp wrote:
Hi Ken,
I used to be the line noise tech for my power company
employer ...
Touch lamps are a seldom-thought-of source of line noise.
Wall-warts, too.
Walwarts of the future will most likely be a real pain. I understand
some legislation has required all of them to be
Brian Alsop wrote:
Walwarts of the future will most likely be a real pain. I understand
some legislation has required all of them to be switching in the near
future.
I have a small halogen lamp which has a walwart that can be used as a
noise generator for adjusting the filters in my K2. It
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