That's my view as well.
Stewart G3RXQ
On Sun, 5 Apr 2009 17:09:08 -0400, Steve Ellington wrote:
Perhaps the band noise is more obvious in the K3 because the low frequency
audio is restricted causing the noise to be distributed over a more narrow
range. This lack of bass tends to induce for ear
A catcha to be aware of if you are building kit that uses DIL plugin relays.
Some of these relays have diodes already fitted internally across the coil.
I have built a couple of projects on PCB's, and wondered why the relay would
not operate.
Reversing the coil connections got things working.
73
Guys, i still could not solve the problem with the sub-rx.
Over the weekend i opened the K3 and checked all TMP-cables,
they are in their correct places.
The pins of the sub-out and the sub-in board are correctly mated with
their sockets.
The Aux-DSP ist seated correctly etc etc..
In short, to me
Perhaps the band noise is more obvious in the K3 because the low frequency
audio is restricted causing the noise to be distributed over a more narrow
range. This lack of bass tends to induce for ear fatigue.
Steve Ellington
I agree with Steve on this one. Once more low-end was rolled into my
AGC settings and AF gain interact. With no signal you may have lots or little
audio. Also, full audio can be at 20% of 50% gain.
When looking at the spectrum of a CW signal one clearly see the third and the
fifth harmonics. Not sure whether they are real or artifacts of a sound card
but K3
That sounds like the problem I had - the leads on T1 on the sub-in
module were not soldered, some paint had been left on the leads. I
cleaned the paint off and resoldered them.
Paul W2LE
DM4iM wrote:
Guys, i still could not solve the problem with the sub-rx.
Over the weekend i opened the
Hi Doug,
Thanks for the contest Qs! Always nice to pick up the EI multiplier.
As to the band button discussion, depending on your logging software, band and
mode switching is easily accomplished by typing in where you want to go in
N1MM. I rarely use the band or mode switches on my K3 when
Paul
I can see how this mod would improve headphone audio but what about low
frequency audio for the speaker(s)?
Steve Ellington
n...@carolina.rr.com
- Original Message -
From: Paul Christensen w...@arrl.net
To: elecraft@mailman.qth.net
Sent: Monday, April 06, 2009 6:54 AM
Subject: Re:
Steve,
Someone else responded to me in private with the same question. Here's my
answer:
The K3 speaker output has something like 470 uF of C in series with the
speaker output amp. That's reasonably adequate. The problem with the K3
speaker's bass frequency response is not the electrical
I've had issues lately with MFJ as well. Last year I ordered a Vectronics
keyer kit. It works fine but, the cabinet was punched wrong. The holes
didn't even match the kit. I called and was told they would send one. I
waited two or three months and called again. This time I was told that
Hi all,
I've got a question re the operation of the NB when using the subreceiver.
I have a K3 with KRX3, running the latest beta F/W (3.06). VFO IND is set to
NO.
If I understand the manual errata correctly, when I switch the NB on it
should be operational on both main and sub receivers.
This reminds me somethnig. The audio in my K3 sounded much better with
noise-canceling phones than with regular headphones. The first one had high
amplification and probably high impedance. So the problem may be due to
inadequate AF amplifier in K3.
I the AF mod helping much?
Ignacy
Evert Bakker (PA2KW) wrote:
For me, I'm quite sure it has to do with the digitalization. That sound is
far from natural and is ADDITIONAL to the normal audio signal. That addition
sounds sharp, metallic, like these extreme low cost jingle bell sounds in
all kind of gifts (sorry for the
I know there are several folks here who could answer this questions.
I'm looking to improve my current chokes for my 160 and 80 Tx antennas. I was
planning on going with -43 material, but after reading thought -J and/or -31
mixes might be a better solution.
The 31 mix seems a bit more
FWIW: I just loaded F/W 2.78. NB works FB on both main and sub receivers.
Must be a firmware bug in 3.06 then...
Anyone who can duplicate this?
73
Glenn ON4WIX
- Original Message -
From: ON4WIX on4...@skynet.be
To: elecraft@mailman.qth.net
Sent: Monday, April 06, 2009 5:00 PM
Subject:
Cannot duplicate here:
F/W 3.06, VFO IND no, NB operational in both rx across full range of NB
parameters.
73 Pete F5VNB
ON4WIX wrote:
FWIW: I just loaded F/W 2.78. NB works FB on both main and sub receivers.
Must be a firmware bug in 3.06 then...
Anyone who can duplicate this?
No. It's 3 resistors in a T or pi attenuator circuit. There are many
attenuator calculators on the web (just Google) to help select the
appropriate resistors for your headphone impedance and desired amount of
attenuation. One attenuator is needed for each ear.
on 2009-04-05 22:14 Billy Cox
Greg,
We had a couple of VFO encoders fail; the manufacturer found the
problem and corrected it. We can send you a replacement. Please contact
k3supp...@elecraft.com for details.
tnx
Wayne
N6KR
On Apr 6, 2009, at 9:52 AM, wa1...@comcast.net wrote:
I have a K3 SN 1553
When I first power
Before I put it on the auction site, I'd like this to go to someone on the
list if they want it. $550.00 shipped to lower 48. Unbuilt 160meter and
noise blanker option. Contact me off list if interested. 73 mike ku4yp
bpd...@wildblue.net
Maarten,
If you send me recordings of your K3 audio (and if possible, recordings
of your other rig's audio for comparison), Lyle and I will listen to
them and see if we think there's anything wrong (excessive hiss,
harshness, etc.). This is certainly not the case with my K3 or any of
those
Folks - This thread was ended last week.
73, Eric WA6HHQ
Elecraft List Moderator
Gary D Krause wrote:
I've had issues lately with MFJ as well.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help:
Wow that's a killer deal.
--
Mike
WE0H
K2 #6698
SKKC #5446
KU4YP wrote:
Before I put it on the auction site, I'd like this to go to someone on the
list if they want it. $550.00 shipped to lower 48. Unbuilt 160meter and
noise blanker option. Contact me off list if interested. 73 mike ku4yp
This little gadget from Radio Shack will act as an attenuator. I use it on
my IC-7000. You can adjust it for no hiss then crank up the AF gain for
normal listening.
http://www.radioshack.com/product/index.jsp?productId=2102975
I use Bose Tripod headphones on the K3 and there is no audio hiss
Roy
Is what you call hissy just a lack of bass? I think of hissy as high
pitched white noise, like wind blowing through a narrow pipe. Is that what
you hear? Adding low freq. audio won't reduce hiss at all but I don't think
we are dealing with hiss. I think the lack of bass gives us the
I concur with what has been said regarding the hissy audio. The receiver
audio seems to be on the mid-range to high frequency side without enough low
frequencies in the passband. Experiments with RX EQ apparently have not done
anything to eliminate this hiss, but maybe the firmware can be
Have you tried setting the receive equalizer? I set mine for the audio I
like to hear I don't have the issue, sometimes I find exactly the opposite
depending on all my settings and then decide whether I would like to touch
the settings up a bit. (I did just get high marks from a recent hearing
I have tried to adjust the audio of the K3 to my liking.
Hi side of spectrum: To get rid of the higher freq's I set the RX-eq 8
to minus 8dB.
Lo side of the spectrum: I tried out the RX-eq 1 and 2. Absolutely no
difference! Not even with the lo cut set to zero.
RX-eq 3 (200Hz) responded better.
Jay wrote:
After 10 months I decided to upgrade my firmware from the original 2.16
since I just got the KXV3 and KRX3...Frustration!
Have a USB 2.0 to RS232 Serial adapter and have tried it in all my USB
plugs and in Com ports 1, 2, and 4 which are shown as choices on the K3
I'm ready and have all mods (diodes, AF output, Audio Line) and the I/O
board upgrade, KXV3 and KRX3 ready to go. Want to attack this without
having to keep removing things over and over. Should the (diodes, AF
output, Audio Line) mods go first, then the I/O board upgrade, KXV3 next
and
Bill,
Thanks for support.
Unfortunately I do have to disappoint you about the suggestions.
I tried, but absolutely no effect when changing the RX-EQ setting.
Even when 2.4 and 1.6 were set at -16, it did not have any effect.
Except when the original audio signal became weaker due to the lowered
Hello Barry,
I will try. I saw some recording programs lately on the reflector.
I'll try to find them and install it.
W'll keep in touch.
73's, evert PA2KW
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Barry N1EU
Sent:
Whenever I turn on my K3 I see ERR PL2 go across the screen then
everything else seems to come up fine.
What is this error message?
Jim, W4TE
K3 #353
++
James R. Kauten, MD
kau...@atnex.net
++
__
You might wish to experiment with Steward mix 35 or 40 toroids. Mix 35
has a relative permeability of 5000 and mix 40 is 10,000. Fair-Rite's 31
material has a relative permeability of 1500.
Digikey carries several sizes of toroid cores in mix 35 and 40 at
moderate price. Search DigiKey's web
I've been spending a lot of time looking at the Line Output of my K3 using the
wonderful (and more remarkably, free) Spectrum Lab program.
http://freenet-homepage.de/dl4yhf/spectra1.html
In so doing, I developed an alternate way to set the K3 (or other radio) Ref
Osc. frequency if you have a
There was some earlier discussion about LED lighting and I thought this article
might be illuminating.
http://electronicdesign.com/Articles/ArticleID/20825/20825.html
Wes Stewart N7S
__
Elecraft mailing list
Home:
I should also mention that Mouser carries some Fair-Rite mix 31 cores.
They are in the catalog at Fair-Rite --
http://www.mouser.com/catalog/637/917.pdf is the current catalog page.
Jack K8ZOA
Julius Fazekas n2wn wrote:
I know there are several folks here who could answer this questions.
Audio is notorious for having a very subjective vocabulary, and this may make
it hard to understand what is meant. I hear terms like hissy, rounder, lack of
bass etc in this discussion. In an attempt to make this discussion more to the
point I would suggest this list compiled by Bruce Bartlett
After reading all the postings about audio, I tried a couple of different
ear sets. I set all but my equalizer to normal settings for SSB. My
equalizer I didn't touch until I tried to see the impact when I tried
different earbuds.
I do not have Heil pro's as I don't like the cover the ear
To all who took the time to answer my questions about the MFJ Artificial RF
Ground - Thank you!
I sincerely appreciate the well thought out replies and references. After
digesting as much as I could I decided to go simple and work up. I began
with 11 turns of RG-8X around a 4 inch PVC pipe,
Sverre,
What's great about this vocabulary (and Ed, W0YK, who is a master vintner
may want to comment) is that you can use this same wonderfully imprecise
audio vocabulary to describe another object of notoriously subjective
taste -- wine. For example, I've been tempted to hit Ed with the
Hi Evert,
You are not alone - my K3 and another I tried experience the same symptoms. I
can't work out the cause but inserting a low pass filter in the headphone
output fixes the problem. I found the same as you in that increasing the AF
gain makes things worse but I don't know if this is
I'm ready and have all mods (diodes, AF output, Audio Line) and the I/O
board upgrade, KXV3 and KRX3 ready to go.
This might help but it doesn't include installing a KXV3 and KRX3:
http://mailman.qth.net/pipermail/elecraft/2009-February/105704.html
73, Bill
--
View this message in
Perhaps NR could also be improved with more low
frequencies in the passband.
Please NO! I already run RX Audio bands 1 and 2 at -16 dB to
eliminate excessive bass - no more bass, please!
The hiss many seem to be complaining about is broadband noise
in the audio (speaker) and/or headphone
How do I get the PW-1 to follow the K3? I have the MKII cabled to the CI-V
port on the PW-1 and to the same connection as my SteppIR on the MKII. The
SteppIR follows perfectly. The PW-1 on Radio bus box is greyed out. The
PW-1 is not following at all.
John
Thanks, Wayne. I wanted to ask about the hissy and brittle audio on my own
K3 a while back,
but at the time, certain forces on the reflector seemed intent on putting
down such audacious
critique (NOT, I emphasise, anyone from Elecraft central).
Instead, I chose to take the coward's option and
Subject: Re: [Elecraft] OT: J and -31 mix toroids
You might wish to experiment with Steward mix 35 or 40 toroids. Mix 35
has a relative permeability of 5000 and mix 40 is 10,000. Fair-Rite's 31
material has a relative permeability of 1500.
Digikey carries several sizes of toroid cores in
The PW-1 is not following at all.
Have you followed the configuration steps in the PW-1 manual to
lock it to the CI-V address used in the microKEYER II?
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of John
Gentlemen:
I've been playing around with PSK-31 and can sort of get it working, using
the K-3 and the Elecraft software. I am able to send by typing text into
the software, and someone on the same frequency can hear and copy me. I was
having difficulty copying him, even thought I was hear
I've used PSK-31 before on a previous 746 Pro and a Tigertronics USB
box,
and it worked fine. I was able to see the waterfall on my computer screen
and could select a signal by clicking on the signal on the display. Not
sure if I can still do this using elecraft software?
Use the same PC
Jay, there's a K3 Utility Help page dedicated to troubleshooting USB to
Serial adapter issues.
My guess is that you're not finding the right COM port number for the USB to
Serial Adapter.
There's a separate troubleshooting Help page, Finding the right COM port
on that topic.
73 de Dick, K6KR
Hi Joe,
Looking at Spectra right out of the Phones output, I don't see where bands
1or 2 do all that much in lowering K3's bass.
Having the rig on SSB using the 2.7 Khz filter, the Lo on 0, I see no
change on bands 1 and 2 when I set them to -16. What I am missing here? I
have never seen or
Dick,
This may not be the case. I struggled for 2 months to get my USB to
serial cable to work correctly. I bought the Elecraft cable, downloaded
the Prolific driver and I could not get,in my case, LP Pan to function
properly. I fixed it yesterday, after some local help (Tnx N3EAQ) and
an
Ken, I am with you. I like the K-3 receive audio on phone and am not a fan
of the down to 0 audio. For many years I have referred to this as, Low
order distortion. Also, I don't like that dull thud sound some of the guys
exhibit with the excessive wide audio and external equipment.
Too much
Per the discussion a couple of weeks ago regarding lightweight headsets
for the K3, I decided to look for the cheapest one I could find that
would still give good results. Amazingly, I found a really lightweight
computer headset for $10 at Tiger Direct that has foam covered
earphones, a foam
You are right Jay. Bands 1 and 2 do nothing. There's nothing to reduce!
Steve Ellington
n...@carolina.rr.com
- Original Message -
From: Jay Bromley jayw5...@gmail.com
To: li...@subich.com; 'Roy Morris' w4...@carolina.rr.com;
elecraft@mailman.qth.net
Sent: Monday, April 06, 2009 7:47 PM
Ron AE6RH wrote:
I've been playing around with PSK-31 and can sort of get it working, using
the K-3 and the Elecraft software. I am able to send by typing text into
the software, and someone on the same frequency can hear and copy me. I was
having difficulty copying him, even thought I was
There seems to be no consensus as to what the hiss or noise is. Therefore,
there is no consensus on how to fix it. This noise, whatever it is, is
something I can live with because I think the K3 is the best overall
transceiver I have owned to date.
Forget this noise thing. My main concern
More tips:
Make sure you've updated to the latest beta firmware (3.06).. Then hold
DISP to get the ALC display. Set power to 15W or so (or 10 if you have
the K3/10). Adjust the LINE knob (right of the RX RF Gain knob) until
the bars reach teh frist big ALC bar, #5.
Leigh/WA5ZNU
Ron AE6RH
You are right Jay. Bands 1 and 2 do nothing. There's nothing to reduce!
On my modified K3, adjusting band 2 (100Hz) will produce bone-jarring bass
when boosted above +5 dB.
However, even though my moded K3 easily produces audible beats down to 30
Hz, adjusting Rx EQ band 1 (50 Hz) has no
Re Hissing Audio
I must make a comment here, re the hissy audio. postings. Not my findings, I
find the audio of the K3 the best I've ever found in a communications rx in
over 50 years.
In basic flat response form as default set up , I found the audio
basey for rx, and when transmitting, I had
If you have a fast computer and want the best performance from your LP-PAN
panadapter, the E-MU is for you. This is a brand new, unused unit in the
original packaging. It comes with everything in the box straigt from the
retailer. $95.00 plus Priority Mail shipping.
73 de K6SBA
David Inger
I have had these Best Buy speaker since Dec 1, small and sound great.
Am very pleased with them
73, Ty, K3 696
--- On Sat, 4/4/09, Jay Rodaman k2...@optonline.net wrote:
From: Jay Rodaman k2...@optonline.net
Subject: Re: [Elecraft] K3 external speakers
To: elecraft@mailman.qth.net
Date:
Audio is notorious for having a very subjective vocabulary, and this may
make it hard to understand what is meant. I hear terms like hissy, rounder,
lack of bass etc in this discussion. In an attempt to make this discussion
more to the point I would suggest this list compiled by Bruce Bartlett
Perhaps I'm in the minority hereusing some nice quality hi-fi
bookshelf speakers.I love the way the K3 sounds.
YMMV
John, N6AX
Mike Scott wrote:
Audio is notorious for having a very subjective vocabulary, and this may
make it hard to understand what is meant. I hear terms
Looking at Spectra right out of the Phones output, I don't
see where bands 1or 2 do all that much in lowering K3's bass.
You won't see much on the headphone output because of the 10 uF
coupling capacitors. The effect is quite obvious on both the
speaker output and the line output (if you
Jay, you may want to consider doing one mod at a time. That way, if
something goes wrong you know exactly where to look. If you do all then you
may be looking for a needle in a haystack. 73, Fred, AE6IC
__
Elecraft mailing list
Home:
I looked through this guide at Radiofest in Monterey, CA and it looked
good.
Leigh/WA5ZNU
For the novice/apprentice PSK31 operator the best starter text I
have seen is:
Nifty E-Z Guide to PSK31 Operation
Bernie Lafrenierer, N6FN
2008, Nifty Ham Accessories
Now upgrade the series caps to 330 uF and re-run the
calculation. With 32-ohm phones (ref 100 Hz), the frequency
response improves to 15 Hz. Now that's t real Hi-Fi on par
with what Icom delivers and the difference is immediately
noticeable to anyone -- not just the folks with golden
On Mon, 06 Apr 2009 17:03:50 -0400, Jack Smith wrote:
You might wish to experiment with Steward mix 35 or 40 toroids. Mix 35
has a relative permeability of 5000 and mix 40 is 10,000. Fair-Rite's 31
material has a relative permeability of 1500.
Relative permeabilility varies with frequency --
69 matches
Mail list logo
