Hi Scott,
Never took it as a criticism... If anything I have found this group of
people to be kind, and generous to a fault in giving and sharing
information. It is sort of like the old days of ham radio! Something I
have not seen in many years.
--
Thanks and 73's,
For equipment, and
Scott,
Since you have Flrig successfully keying the K3, but it will not unkey
when Fldigi is running, I am going to venture a guess that you also have
VOX turned on in the K3, and there is just enough noise on the soundcard
output that once turned on, the K3 is staying in transmit. Check and
Hi Gary,
Yes, and it's curious that there are clearly better decoders out there. I built
an Open QRP rig last year and the decoder was phenomenal...much better than the
KX3, so assuming this is a software issue, is this something that the Elecraft
engineers are looking at?
73, Steve
On Mon, 21 Apr 2014 09:32:59 -0400, Stephen Roberts wrote:
Yes, and it's curious that there are clearly better decoders out there.
I built an Open QRP rig last year and the decoder was phenomenal...
much better than the KX3, so assuming this is a software issue, is this
something that the
Scott,
There is a jumper in the SignaLink USB you can set
to provide more RX audio out. Using Digipan 2.0 I
didn't need to do that with my K3. But I've never
tried Fidigi.
73, Phil w7ox
On 4/20/14, 6:31 PM, Scott via Elecraft wrote:
Hi all,
The bands were dead here today so I started
I'm note sure the title makes any sense.
Now I hate to admit this but I've had more
contacts in the last two month than in the last
ten years using JT65HF.
I'm using a FT-1000D with BPF on 20 and 10 meters
with a Cushcraft Vertical. I think I bought it when
Cushcraft was still in NH.
I'm
I've played with a few decoders, Steve -- more out
of interest than anything else. The one I've found
most promising is in the NUE_PSK modem. See
http://www.nue-psk.com/cw/index.html#Receive_ and
http://www.nue-psk.com/doc/CW%20Mode%20for%20the%20NUE-PSK%20Digital%20Modem.pdf
But even there
My aging K2 (#2198) has developed a curious symptom in that the 4 MHz
oscillator cannot be adjusted lower than about 4,000,000.55 kHz. It has
probably been like this for a while and my BFO settings have probably been
done with the incorrect reference. I discovered it by observing that the
The only real concern for using the K3 with WSJT-X (JT65 and
JT9 simultaneously) is to make sure you get either the FM or
AM (13 KHz or 6 KHz) roofing filter so you can widen the RX
bandwidth to the full 4.2 KHz. With a 2.7 or 2.8 KHz filter
you will be limited to one mode or the other and
Ditto! Sort of...
I agree that CW is a manual, using ear and head tools, and not using an eye
tools. Otherwise, what is the difference between CW, RTTY, PSK, or whatever in
terms of enjoyment (certainly there are differences in other physical aspects).
But, there are times when I hear a DX
I have both those filters, 2.7 and 2.8 and am able to crank the width to
4KHz. Also using WSJT-X and am able to adjust/widen the screen to 4KHz
for both modes, works great!
73 Dwight NS9I
On 4/21/2014 9:52 AM, Joe Subich, W4TV wrote:
The only real concern for using the K3 with WSJT-X (JT65
Sverre Holm (LA3ZA) wrote
My aging K2 (#2198) has developed a curious symptom in that the 4 MHz
oscillator cannot be adjusted lower than about 4,000,000.55 kHz.
This should be 550 Hz too high, that must be 4,000.55 kHz (I think!)
-
Sverre, LA3ZA
K2 #2198, K3 #3391,
LA3ZA Blog:
I found what I needed (QRPKits).
Tnx, Dick, W1KSZ
On 4/20/2014 9:43 AM, Richard Solomon wrote:
Anyone have a 2T Test Oscillator they no longer need and would be
willing to sell ??
Thanks, Dick, W1KSZ
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Well Gary, that goes without saying, but the issue was a comparison between
text decoders and I was simply stating the fact that the KX3 decoder isn't the
brightest bulb in the chandelier IMHO.
I am a diehard student and lover of CW, and I have to admit when I'm in some
QSO's where the other
Since I began using my KX3, I seldom use my K2 and have decided to sell it.
I built it about 3 years ago and am very pleased with it’s performance.
It has always been in a non-smoking environment.
I am a graduate EE and have built many kits throughout the years including 2
K2’s and a K1. One of
With a 2.4 KHz filter (not on a K3) I only got partial band coverage on
JT65/JT9).
Is there any advantage to using a CW filter to look at a eq channels at
a time ?
Or is it better just to use the DSP to narrow it down ?
Larry
DGB [via Elecraft] wrote:
I have both those filters, 2.7 and 2.8
Sverre,
You could add additional capacity across C22 to adjust it into range -
you would have to experiment with the value. The range of C22 is likely
6 to 50 pf, so adding 40 pF at a time would retain the C22 bandspread
and should allow it to tune. i.e., I would suggest first putting 39 pF
AG0N-3055 wrote
On Mon, 21 Apr 2014 09:32:59 -0400, Stephen Roberts wrote:
Dumb question time. Why don't you just learn to operate CW the way most
people do? CW is supposed to be a manual mode. It is an ART. Copying
CW is a part of the tradition of amateur radio. If you have to have
Hi friends
I seem to have some issues with my K3 on receive.
It presents as a seemingly complete loss of either RF or IF gain - The S meter
goes dead and there are no signals audible or visible on the S meter.
After a few seconds usually, everything comes back. Turning the radio off and
on
Hi Don,
Thanks - heating up the soldering iron now!
- Sverre
-
Sverre, LA3ZA
K2 #2198, K3 #3391,
LA3ZA Blog: http://la3za.blogspot.com,
LA3ZA Unofficial Guide to K2 modifications:
http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html
--
View this message in context:
I'd suspect a loose cable/connector -- or a bad
one -- inside the rig. You should open it up and
take a look.
73, Phil w7ox
On 4/21/14, 8:52 AM, Chris G7DDN wrote:
Hi friends
I seem to have some issues with my K3 on receive.
It presents as a seemingly complete loss of either RF or IF gain
I was looking for a source for custom-length VGA cables for a K3-KPA-KAT
combination, and came across a company on the Web called CableWholesale.
Mindful of the cautions on this reflector to use only straight-through
cables such as Elecraft's own (which unfortunately do not come in custom
Dear OMs and Yls,
Calm down, no need to get angry. The CW decode feature is a tool and
maybe it keeps some on the mode who would otherwise not try. In time they
improve and even seasoned operators occasionally may find the decode feature
handy if not amazing. You can be distracted and
You don't need to be a EE to figure this out. All (S)VGA cable are
straight-thru, in the sense that none of the pins are cross connected.
However, a standard (S)VGA cable does not have all 15 wires connected from
one end to the other, and often the ground pins are wired together.
A simple Google
Check with MCM Electronics. They have all sorts of pre-made cables from
simple phono plugs to much more complicated. Many times I can buy the
pre-made cable with molded on connectors cheaper than I can buy the
connectors. I've used their HDMI, VGA, XLR etc. cables, as well as various
There are, of course, exceptions to that rule. When there is a
very strong signal in the passband that is causing the receiver
to reduce gain to the point that a weak signal is not copyable,
a CW filter (400 Hz) centered on the weak signal can often make
the difference between copy and no copy.
On 4/21/2014 8:28 AM, Larry Lopez wrote:
Or is it better just to use the DSP to narrow it down ?
K1JT says that it is best to run the radio broadband and let the WSJT
software provide the needed selectivity in its decoding algorithm. The
reason is simple -- phase shift can cause decoding
Sounds like a mechanical issue to me. That would mean a loose connector,
loose wire inside of a connector, or a cold solder joint.
To start trouble shooting, you will need:
1. A small non-conductive probe - part of an old pen case will do well
as will a plastic cable tie. Lightly tap each
I'm sorry but I have not yet seen a CW decoder that can copy faint signals very
well. Any noise will cause an erroneous character.
I think Gary's intent is don't be dependent on a CW decoder to copy for you. If
you don't get that L the first time listen for the
next time. Personally I wonder
Exactly.
No software yet produced is as good as the human brain when copying CW.
It's just a fact and expecting a radio, especially a radio with limited
firmware space, or piece of software to copy perfectly 100% of the time
is ridiculous.
On 4/21/2014 11:35 AM, Doug Turnbull wrote:
Dear
On 4/21/2014 10:05 AM, Joe Subich, W4TV wrote:
There are, of course, exceptions to that rule. When there is a
very strong signal in the passband that is causing the receiver
to reduce gain to the point that a weak signal is not copyable,
a CW filter (400 Hz) centered on the weak signal can
Folks - to keep list noise level under control for others, lets table the
pro/con discussion of people using CW text decoders.
Discussing how to adjust things to make CW decoding work best is OK.
73,
Eric
List Modulator
elecraft.com
On 4/21/2014 10:19 AM, Kevin Stover wrote:
Exactly.
No
One easy thing that can be done quickly - give each of the TMP
connectors a slight turn - use long nose pliers (fingers are not small
enough in crowded areas).
If it fixes the problem, great. Otherwise, continue with the other
troubleshooting steps indicated by others.
73,
Don W3FPR
On
Eric Swartz - WA6HHQ, Elecraft wrote
Folks - to keep list noise level under control for others, lets table the
pro/con discussion of people using CW text decoders.
Discussing how to adjust things to make CW decoding work best is OK.
73,
Eric
List Modulator
elecraft.com
Which was the
Thanks Joe and Jim:
So you need a linear phase filter.
Is the DSP filter linear phase ?
I'm searching for linear phase filter and ending up finding references
in this group !!!
Larry, N2CS
--
View this message in context:
sussman wrote
I'm a relatively new ham still new to CW... can only decode about 12wpm.
I
try not to look at the screen, but it's a nice safety net. When I miss
something critical, I can glance up and hopefully prevent a panic attack.
:-)
Ahh no need to panic. :) Most operators are very
So, what I need to ask is not whether a custom cable is straight through
but rather whether all 15 pins are connected, yes?
Message: 22
Date: Mon, 21 Apr 2014 12:38:11 -0400
From: Bruce Beford bef...@myfairpoint.net
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Cables, again
Message-ID:
Chris -
The power on -off cycle cure does not tally with the below but its worth a
try .
Having just put a KAT3 in my K3 this weekend to replace the KANT3 - from
what you describe - take the top cover off - and if you have the KAT3
tuner - check the two pigtails from the SO239's to the
Intentional slight delay = Elecraft got it right again!
Lane
On Monday, April 21, 2014 12:10 PM, Fred Jensen k6...@foothill.net wrote:
That's always worked for me, and I can't sing.
73,
Fred K6DGW
- Northern California Contest Club
- CU in the 2014 Cal QSO Party 4-5 Oct 2014
- www.cqp.org
How do you adjust the amount of NR on NR1 on the KX3? My menu reads 10.
Thanks.
Lane
Ku7i
JH1JCM
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Post:
So, what I need to ask is not whether a custom cable is straight through
but rather whether all 15 pins are connected, yes?
HD15 connectors, straight through, all 15 pins, each isolated from the
others.
Bruce N1RX
__
Elecraft
Phase noise is an issue, however, adjacent signals in the filter passband
seem to have more of an impact on the ability to decode weak signals than
the phase noise associated with narrower filters. I have been able to
decode weak DX stations with 400Hz and even 250Hz filters that I could not
By turning the (AF/RF - SQL) knob rigth above the NR button.73 de Hal/la4xx
On 14-04-21, lane zeitler via Elecraft elecraft@mailman.qth.net wrote:
How do you adjust the amount of NR on NR1 on the KX3? My menu reads 10.
Thanks.
Lane
Ku7i
JH1JCM
Actually, you need to ask two questions:
1. Are all 15 pins wired through from one end to the other?
2. Are any of the pins connected together on either end?
73,
Fred K6DGW
- Northern California Contest Club
- CU in the 2014 Cal QSO Party 4-5 Oct 2014
- www.cqp.org
On 4/21/2014 11:57 AM,
On 4/21/2014 11:57 AM, Dauer, Edward wrote:
So, what I need to ask is not whether a custom cable is straight through
but rather whether all 15 pins are connected, yes?
You want a 15-conductor cable, with each conductor wired pin-for-pin
between the DB-15 connectors on both ends, and no
Are you in DATA mode when you use JT65. What mode for PSK?
--
Thanks and 73's,
For equipment, and software setups and reviews see:
www.nk7z.net
for MixW support see;
http://groups.yahoo.com/neo/groups/mixw/info
for Dopplergram information see:
http://groups.yahoo.com/neo/groups/dopplergram/info
Agreed, BUT- You do NOT want DB15 connectors. These cables use HD15
connectors, not DB15. DB15 has two rows of pins. HD15 (high density) has 3
rows.
Bruce N1RX
And VGA or SVGA should be removed from the discussion -- they
describe a computer video data interchange format that needs fewer than
I put together some info on this in an article on my website. Here’s the
direct link:
http://www.ad5x.com/images/Presentations/KlineAuxCable.pdf
Phil – AD5X
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I recently corrected a similar problem on the K3 I put together. Same symptoms,
and I found when moving the coaxial cable on the main antenna on the outside of
the radio, I could duplicate the problem. I replaced my exterior rg-58
cable/connector three times without relief, then found that the
Phase noise is *not* the problem/solution being discussed.
It is the phase *shift* through the filter. That is signals (within the
passband) of one frequency are not delayed by exactly the same amount of
time as signals of another frequency. That is a different 'animal' than
phase noise.
You don't want DB-15s because the B shell size is too big.
This is a DE connector.
On 4/21/2014 12:59 PM, Bruce Beford wrote:
Agreed, BUT- You do NOT want DB15 connectors.
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Home:
This is a DE connector.
No. It's an HD15. Phil's (AD5X) pdf document (which he just posted a link
to), is an excellent resource.
Bruce N1RX
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Help:
I would love to have a CW decoder do the work of copying CW for me, but...
Most CW that I work is very weak-signal. If not at noise level is
actually below noise. I have found no computer decoding sw that will
work into the noise. Solution? Its called JT65 (or one of its
variants). JT65
I'm wondering if any digital filters exist for the K3.
I'm wondering which common filters work best on the K3.
I'm interested in JT65 and JT9
linear phase delay and constant group delay
means that the signal of different frequency
take the same time to go through the filter
so that the waveform
On 4/21/2014 12:49 PM, David Cole wrote:
Are you in DATA mode when you use JT65. What mode for PSK?
RTFM. :) If you're using a computer to generate the signal, use DATA A
for everything but RTTY. For RTTY from the computer use AFSK.
DATA A means that the computer generates the data
On 4/21/2014 12:10 PM, lane zeitler via Elecraft wrote:
Intentional slight delay = Elecraft got it right again!
Not quite. There MUST be some small delay if the signal goes through
DSP. In this case, A/D conversion (mic to digital), DSP processing, D/A
conversion (digital to analog to feed
JT65:
http://elecraft.365791.n2.nabble.com/JT65HF-Data-Mode-A-td7513437.html
my FT1000D was USB.
--
View this message in context:
http://elecraft.365791.n2.nabble.com/How-to-outfit-a-K3-for-JT65HF-or-JT9-tp7587584p7587636.html
Sent from the Elecraft mailing list archive at Nabble.com.
On 4/21/2014 1:08 PM, Larry Lopez wrote:
I've been using the filters on my FT1000D
and I do notice the 250 Hz one doesn't
seem to help JT65HF as much I would
have expected.
Any ideas,
Read previous posts about this from W4TV and myself this morning.
73, Jim K9YC
On 4/21/2014 1:07 PM, Bruce Beford wrote:
No. It's an HD15.
Thanks for the correction.
73, Jim
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Post:
But what about EME.
You want a narrow filter and you want constant group delay.
I'll research that as a separate topic.
Let's close this out.
In a pinch the 5 pole filter which comes with the rig is ok.
6K AM, 12K FM are recommended making up selectivity
in the DSP.
Narrow filters recommended
No disrespect to Phil, but Cannon developed the D-Subminiature connector
family, and Cannon calls it a DE-15.
https://en.wikipedia.org/wiki/DE-9#Description.2C_nomenclature.2C_and_variants
is a fairly good reference.
If you order an HD-15 connector, you'll get a DE-15. If you order a
Larry Lopez wrote
So you need a linear phase filter.
Is the DSP filter linear phase ?
I teach DSP and filters at the University of Oslo. Of the two DSP filter
types, FIR (Finite Impulse Response) and IIR (Infinite Impulse Response),
only an FIR filter can be designed to have exact linear phase
Thank you Jim,
I read all your posts.
I'll quote your quote of K1JT again here:
K1JT says that it is best to run the radio broadband and let the WSJT
software provide the needed selectivity in its decoding algorithm. The
reason is simple -- phase shift can cause decoding errors,
Now with EME this isn't much of a problem I would think.
If no strong signals are present then the DSP wold be able
to shrink the bandwith just fine.
Even though a wide filter lets in a lot of noise
the DSP can get rid of it.
--
View this message in context:
Thanks for the reference, Lynn. I have always (for many years) seen these
referred to as high density (HD) D connectors. All the catalogs I have ever
perused called them D-Sub High Density Connectors.
I appreciate the background material. I think the most important take-away
for this application
Oh my, I finally get it.
You don't even need the K3's DSP.
Thank you.
--
View this message in context:
http://elecraft.365791.n2.nabble.com/How-to-outfit-a-K3-for-JT65HF-or-JT9-tp7587584p7587644.html
Sent from the Elecraft mailing list archive at Nabble.com.
This is wrong:
Even though a wide filter lets in a lot of noise
the DSP can get rid of it.
The WSJT software is a DSP.
It has it's own filters and the DSP on the K3
is not needed.
So the only job of the K3 is to produce a clean
wideband signal for the WSJT.
You would still have to prevent
Preparing for a performance in a large out-door stadium, my voice
coach at the time echoed me with a slight delay so I wouldn't freak out
when it happened on stage! For hearing what I really sound like in
real-time, I get a good approximation by putting my palms near my mouth
and
On 4/21/2014 1:59 PM, Larry Lopez wrote:
But what about:
very weak signals reducing the bandwidth increases the signal to noise
ratio.
very strong signals reducing the bandwidth can prevent the DSP chain from
desensitizing the receiver and/or saturating the a/d converter.
Joe is well aware of
I've already recanted on S/N ratio.
I was an idiot.
I kept skipping the part where the PC is also a DSP.
Sven's post on the other thread also brought my attention to it.
The only thing left is strong carriers overloading the receiver.
I'll go find WSJT and learn some more.
Thanks again Jim.
Thank you.
Lane
Ku7i
JH1JCM
On Tuesday, April 22, 2014 3:53 AM, Hjalmar Duklæt dukl...@broadpark.no wrote:
By turning the (AF/RF - SQL) knob rigth above the NR button.
73 de Hal/la4xx
On 14-04-21, lane zeitler via Elecraft elecraft@mailman.qth.net wrote:
How do you adjust the amount of NR
On 4/21/2014 2:06 PM, Jessie Oberreuter wrote:
For hearing what I really sound like in real-time, I get a good
approximation by putting my palms near my mouth and pulling the tops of
my ears down with my fingers :).
My voice coach trained me to just put the palms of my hands over my ears
and
Joe is well aware of the issue. Hiss answer that the phase distortion
issue trumps S/N ratio.
K1JT is correct as it relates to EME where one does not generally have
strong interfering signals. Remember the detection bandwidth in WSJT-X
is on the order of a few Hertz - not the 2.8 to 5 KHz
I'm wondering if anyone has a K3
that they would like to part with.
Tell me what you have
and what you want for it.
Serial number and condition
would be useful.
If the price is right.
Be sure to factor in that
the warranty isn't transferable
and that updates are needed.
Thank you,
Larry Lopez
I might be able to trade a little used
FT1000D/4 filters/BPF and original book.
But you would really have to twist my arm.
--
View this message in context:
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Sent from the Elecraft mailing list archive at Nabble.com.
Bruce and all,
I have seen the 15 pin high density connectors referred to as D-sub15HD,
DB15HD and DE15HD in catalogs. No matter what the prefix designation,
the HD is significant and required.
73,
Don W3FPR
On 4/21/2014 5:05 PM, Bruce Beford wrote:
Thanks for the reference, Lynn. I have
From: Larry Lopez lawlop...@gmail.com
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] How to outfit a K3 for JT65HF or JT9
Message-ID: 1398112561934-7587639.p...@n2.nabble.com
Content-Type: text/plain; charset=us-ascii
But what about EME.
--
I run my K3 in DATA-A which sets
Larry,
EME is about weak signal reception, and all the signals on the band
segment are weak.
So there are no strong adjacent signals to worry about.
The situation on HF is different. If there is a station within the
passband at S-9+30, it is on the borderline for activating the Hardware
I think no one here would argue that human brain is the best decoder.
The original question, if I remember correctly, is about how to use the
decoding function in KX3 to generate the best result. So, let us move on the
way to get a better decode from KX3 or other softwares (may be we don't
don't forget the K3's tunable Notch, I have found it works quite well to
attenuate those offending S9 +30 signals. The width is just shy of a
JT65 signal, but if you make sure to cover the low end it works. You can
watch it working in the waterfall. I always run with the K3's AGC off...ymmv
sm
The hardware AGC cannot be turned off - it is a protection system for
the ADC that proceeds the DSP and must be protected from overload
otherwise garbage will be the result. Yes, the tunable notch will
attenuate signals that are within the passband of the roofing filter,
but only the roofing
On 4/21/2014 8:51 PM, Sam Morgan wrote:
don't forget the K3's tunable Notch, I have found it works quite well
to attenuate those offending S9 +30 signals.
The Manual notch is outside the AGC loop - it can not protect the AGC
system from pumping and as such only serves to protect the sound
Hi Chris,
I have had a few weird intermittent problems over the years, including
something similar to your description. After a few false starts, I
eventually separated the front panel from the main pcb and gave the
connectors some treatment with Deoxit. Since then, none of the previous
gremlins
I had something similar a month ago. When I would touch a switch or front mic
plug, the receive would come back.
I'm not sure it would completely disappear but definitely attenuated.
Turned out to be a PL-259 that was snug but apparently not tight enough.
73
Mike R
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