Re: [Elecraft] K3 and SDR-IQ and CW Skimmer

[tomb18]

You can connect the sdrplay to the IF out of the K3 and use Win4k3suite  or 
hdsdr to view the spectrum.  The Sdrplay would need to be tuned to 8.215MHz in 
HDSDR or it is tuned automatically in Win4k3.the SDRPLAY will provide 2mhz 
bandwidth in its most useful configuration but you can go to 8mhz bandwidth.On 
the K3, you will see some interesting effects as the bandwidth is increased. 
Depending where you tune you can see signals all of a sudden disappear when you 
tune the radio when the bandpass filters take effect. None the less 1.8 mhz is 
good on the ham bands.73 Tom va2fsq.com 




Sent from my Samsung Galaxy smartphone.
 Original message From: Don Wilhelm  
Date: 2016-12-23  2:02 AM  (GMT-05:00) To: Ignacy , 
elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 and SDR-IQ and CW Skimmer 
Ignacy,

I know nothing about the display capabilities of SDR-IQ, so the only 
thing I can say is that the actual input frequency of SDR-IQ must be the 
same as the IF frequency of the K3 - 8215kHz.

73,
Don W3FPR

On 12/22/2016 3:52 PM, Ignacy wrote:
> I am trying to set up CW Skimmer with SDR-IQ and K3 so that SDR-IQ is
> connected to IF OUT and follows K3's frequency. Is this doable?
>
> If not, it there any way of configuring SDR-IQ to follow band changes with
> K3?
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Re: [Elecraft] P3 "USB DEVICE REMOVED"

[Jean-François Ménard]

I still do not get it.

What could be different in the initialization process between « to plug a USB 
keyboard when the P3 is already running » and when the P3 start with a USB 
keyboard already plugged in ???

I’m very curious to see if another USB initialization state could be added or 
checked when a user manually enable the SVGA DATA window ON and OFF ???

I guess Wayne or someone involved in the P3 software development could answer 
this…. hopefully.

Best regards.

73 de Jeff | VA2SS 


__
Jeff | VA2SS
Jean-François Ménard

jean-francois.men...@va2ss.com 
www.VA2SS.com 

Message envoyé à partir de mon appareil mobile.
Message sent from my portable device.

> Le 22 déc. 2016 à 21:03, Jean-François Ménard  a écrit :
> 
> Hi,
> 
> I’m using my USB keyboard with the P3+SVGAboard. The keyboard works great 
> until I power off the P3 then back on. I always have a message on the 
> external VGA display « USB DEVICE REMOVED » and the keyboard doest not work 
> until I unplug the keyboard and plug it back again.
> 
> When I turn on the P3, I always see the keyboard usual init flashing green 
> led. When in the terminal mode, I cannot see the K until I unplug then plug 
> again the keyboard.
> 
> Any idea ???
> 
> Regards,
> 
> 73 de Jeff | VA2SS 
> 
> __
> Jeff | VA2SS
> Jean-François Ménard
> 
> jean-francois.men...@va2ss.com 
> www.VA2SS.com 
> 
> Message envoyé à partir de mon appareil mobile.
> Message sent from my portable device.
> 

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Re: [Elecraft] KDSP2 discontinued??

[VE3WDM]

Ok thanks Don. 
Mike 
VE3WDM



--
View this message in context: 
http://elecraft.365791.n2.nabble.com/KDSP2-discontinued-tp7624893p7624909.html
Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] P3 "USB DEVICE REMOVED"

[Brendon Whateley]

I'd try a different USB keyboard. It may be that your keyboard doesn't boot
up fast enough or has some other timing issue with the P3 USB device
enumeration procedure.

USB isn't a simple serial connection. And a Keyboard is a computer. Welcome
to the modern world.

- Brendon

On Fri, Dec 23, 2016 at 4:54 AM, Jean-François Ménard 
wrote:

> I still do not get it.
>
> What could be different in the initialization process between « to plug a
> USB keyboard when the P3 is already running » and when the P3 start with a
> USB keyboard already plugged in ???
>
> I’m very curious to see if another USB initialization state could be added
> or checked when a user manually enable the SVGA DATA window ON and OFF ???
>
> I guess Wayne or someone involved in the P3 software development could
> answer this…. hopefully.
>
> Best regards.
>
> 73 de Jeff | VA2SS
>
>
> __
> Jeff | VA2SS
> Jean-François Ménard
>
> jean-francois.men...@va2ss.com 
> www.VA2SS.com 
>
> Message envoyé à partir de mon appareil mobile.
> Message sent from my portable device.
>
> > Le 22 déc. 2016 à 21:03, Jean-François Ménard  a
> écrit :
> >
> > Hi,
> >
> > I’m using my USB keyboard with the P3+SVGAboard. The keyboard works
> great until I power off the P3 then back on. I always have a message on the
> external VGA display « USB DEVICE REMOVED » and the keyboard doest not work
> until I unplug the keyboard and plug it back again.
> >
> > When I turn on the P3, I always see the keyboard usual init flashing
> green led. When in the terminal mode, I cannot see the K until I unplug
> then plug again the keyboard.
> >
> > Any idea ???
> >
> > Regards,
> >
> > 73 de Jeff | VA2SS
> >
> > __
> > Jeff | VA2SS
> > Jean-François Ménard
> >
> > jean-francois.men...@va2ss.com 
> > www.VA2SS.com 
> >
> > Message envoyé à partir de mon appareil mobile.
> > Message sent from my portable device.
> >
>
> __
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Re: [Elecraft] KDSP2 discontinued??

[Kevin Cozens]

On 16-12-22 07:03 PM, Ron D'Eau Claire wrote:

It was mentioned here. IIRC Lyle (the engineer) said that certain parts had
become "unobtainum".


When I saw the announcement I wondered about the possibility of new version 
of the KDSP2 that was based on an FPGA such as a Spartan 6 (for example).


I'm not sure how it would affect the price but it would make the board a 
little less prone to parts decaying in to the state of unobtanium.


--
Cheers!

Kevin.

http://www.ve3syb.ca/   |"Nerds make the shiny things that distract
Owner of Elecraft K2 #2172  | the mouth-breathers, and that's why we're
| powerful!"
#include  | --Chris Hardwick
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Re: [Elecraft] KDSP2 discontinued??

[Phil Wheeler]

Such things are probably doable, Kevin. But the 
market size issue is likely a major factor 
mitigating against such a development by Elecraft.


If I were to build a second K2 after all these 
years, I'd sure want the KDSP2 in it; but that's 
not something I'm likely to do. My (partly) 17 
year old K2 #380 is still working quite nicely and 
fully upgraded with all Elecraft updates -- and 
some 3rd party ones, too :-)


Phil W7OX

On 12/23/16 9:06 AM, Kevin Cozens wrote:

On 16-12-22 07:03 PM, Ron D'Eau Claire wrote:
It was mentioned here. IIRC Lyle (the engineer) 
said that certain parts had

become "unobtainum".


When I saw the announcement I wondered about the 
possibility of new version of the KDSP2 that was 
based on an FPGA such as a Spartan 6 (for example).


I'm not sure how it would affect the price but 
it would make the board a little less prone to 
parts decaying in to the state of unobtanium.




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Re: [Elecraft] IMD and CW

[Alan Bloom]

For a CW signal, the nonlinearity of a typical power amplifier should 
have the effect of shortening the rise and fall times.  That does indeed 
widen the transmitted bandwidth.  But intuitively, it seems like the 
distortion would have to be really bad to shorten the rise/fall times by 
much.  You could always compensate for it by adjusting the K3 for softer 
key shaping.


Alan N1AL



On 12/22/2016 10:22 PM, Vic Rosenthal wrote:

I didn't exactly do this, but I did investigate the effects of distortion on CW 
signals. I disconnected my P3 from the K3 and set the IF to 7 MHz. so it would 
act like a standalone spectrum analyzer.
I was interested in whether a class-C amplifier I had built would sharpen the 
keying enough to create noticeable clicks. The amplifier used minimal fixed 
bias to allow a small amount of resting plate current in transmit mode, with 
full class-C operating bias provided by a grid resistor.
I noted a broadening of the base of the signal on the P3, indicating that the 
signal was not as clean as the K3 alone.  But listening with another receiver 
on either side of the S9+30 dB signal didn't reveal audible clicks. I also 
asked other operators to listen and there were no reports of clicks.
I am sure that attempting to use that amplifier (a pair of 813s) on SSB would 
have gotten me ridden out of town on a rail!

Vic 4X6GP


On 22 Dec 2016, at 23:10, K9MA  wrote:


On 12/22/2016 11:40, Jim Brown wrote:
IMD also affects CW. What we call CW is not "continuous wave," it is a 
continuous wave that is 100% modulated by a rectangular wave. That rectangular wave is 
rich in harmonics, and excites IMD. We hear it as clicks.

It would be interesting to see how much IMD it takes to significantly increase key clicks 
of a "clean" keyed CW signal, like that of the K3.  I'd expect the effect to be 
small, compared to that on an SSB signal for the same level of IMD, but I could be wrong. 
 I suppose a simple test would be to have a local friend with a P3 watch the signal as I 
turned down the supply voltage on my K3.  Has anyone tried anything like that?

73,

Scott  K9MA


--
Scott  K9MA

k...@sdellington.us

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[Elecraft] KAT500 Utility Question?

[paule408--- via Elecraft]

 I've managed to get my KAT500 working again. I am trying to set up the 
following from within the KAT500 utility:
Antenna 1 for bands 6-40 meters (Steppir DB36)
Antenna 2 for bands 8-/160 (Dipole antenna)
Antenna 3 is not used. 
Can someone guide me to how this can be established from the utility?
Thanks in advance, 
Paul n6psep...@n6pse.com
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[Elecraft] CW macro for K-pod

[Mike Weir]

Good afternoon all, here is what I want to do.I have the K-pod and 
I wanted to set up some of the F buttons to send CW contest replies such as:

My call

TU

Contest exchange and if possible an increasing serial exchange

Just not sure how to set all this up?

Thanks in advance

Mike

VE3WDM

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Re: [Elecraft] KAT500 Utility Question?

[Dick Dievendorff]

Hi, Paul!

It's on the Configuration tab of the KAT500 Utility.
Choose "Edit Configuration", "Antennas".  
You want different antenna choices for individual bands, so choose each band
in turn, and check the appropriate "Enabled" check boxes.  

The "preferred" antenna is the one you want selected when you change to that
band from another.  For example, you might want your dipole enabled on
40-10, but not often use it. You could enable the dipole (ant2 for you) on
some of the HF bands, but choose "ANT1" as the preferred antenna for 40-6.
Then you could listen on the dipole with a switch press, but if you switch
away from that band and return, you'd start out with the DB36 each time.

This is described in KAT500 Utility Help, Choose "configuration" or "antenna
enable" from the Index.

73 de Dick, K6KR
It's snowing here!!! Just in time for Christmas.

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
paule408--- via Elecraft
Sent: Friday, December 23, 2016 10:28
To: elecraft@mailman.qth.net
Subject: [Elecraft] KAT500 Utility Question?

 I've managed to get my KAT500 working again. I am trying to set up the
following from within the KAT500 utility:
Antenna 1 for bands 6-40 meters (Steppir DB36) Antenna 2 for bands 8-/160
(Dipole antenna) Antenna 3 is not used. 
Can someone guide me to how this can be established from the utility?
Thanks in advance,
Paul n6psep...@n6pse.com
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Re: [Elecraft] K3S Sound Board upgrade for K3

[Nr4c]

Ok. KIO3B. 

Sent from my iPhone
...nr4c. bill


> On Dec 22, 2016, at 10:30 PM, Gary Hembree  wrote:
> 
> Try this:
> http://www.elecraft.com/elecraft_prod_list.htm#kio3bupkt
> 
> 73
> Gary, N7IR
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Re: [Elecraft] K3S Sound Board upgrade for K3

[Nr4c]

Not sure what you call a "sound board" but if you mean the USB audio and serial 
interface mod (KIO3a) it's been available for some time. 

Sent from my iPhone
...nr4c. bill


> On Dec 22, 2016, at 10:19 PM, Guy Olinger K2AV  wrote:
> 
> Whatever happened to distributing the K3S sound board and its various
> improvements for the K3. That's been rumored forever it seems. We have the
> various other improvements, synthesizers, new preamp, etc. But not the new
> sound board.
> 
> Is that project still alive, will it actually happen? If so, a time frame,
> is anyone in the splendid engineering department actually working on it?
> 
> Or have you guys gone all-hands on some huge new splendid offering we
> haven't heard about yet.  ????
> 
> Just wishing and wondering.
> 
> 73, Guy, K2AV
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Re: [Elecraft] CW macro for K-pod

[Cady, Fred]

Hi Mike,

You can use the KY command to do that.

Use the K3 Utility to program separate macros with:

KY VE3WDM;

KY 599 CA;

KY TU;

Write them to the K3.

Then use the KPod buttons to send.

You can't send an increasing number for a report although if you have a P3 with 
SVGA you could.

73,

Fred KE7X


For all KE7X Elecraft books, see www.ke7x.com

(Macro programming book coming)



From: Elecraft  on behalf of Mike Weir 

Sent: Friday, December 23, 2016 12:17 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] CW macro for K-pod

Good afternoon all, here is what I want to do.I have the K-pod and 
I wanted to set up some of the F buttons to send CW contest replies such as:

My call

TU

Contest exchange and if possible an increasing serial exchange

Just not sure how to set all this up?

Thanks in advance

Mike

VE3WDM

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Re: [Elecraft] IMD and CW

[K9MA]

On 12/23/2016 12:11, Alan Bloom wrote:
For a CW signal, the nonlinearity of a typical power amplifier should 
have the effect of shortening the rise and fall times.  That does 
indeed widen the transmitted bandwidth.  But intuitively, it seems 
like the distortion would have to be really bad to shorten the 
rise/fall times by much.  You could always compensate for it by 
adjusting the K3 for softer key shaping.


Alan N1AL 
I think it's a little more complicated than that:  The K3 shapes the CW 
waveform very carefully, to minimize bandwidth.  (I think it's 
equivalent to passing the signal through a narrow bandpass filter.) 
Obviously, any distortion downstream is going to compromise that careful 
shaping.  However, based on my intuition and Vic's results, I suspect it 
would take a truly terrible amount of distortion to significantly 
increase the CW bandwidth.  Given that the K3 is so much cleaner than 
many other popular radios, I doubt we need to worry.


73,

Scott K9MA

--
Scott  K9MA

k...@sdellington.us

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Re: [Elecraft] IMD and CW

[Fred Jensen]

Not CW, and this probably won't work in 4X-land, but if you want to see 
the difference a Class-C amp makes, set your P3 span to about 6 KHz, and 
tune in WWV on its various frequencies.  During the tone-on minutes, the 
2.5 and 20 MHz signals will look as you expect an AM signal with a tone 
modulating it ... two sidebands on either side of the carrier.  If you 
look very close, you can see the 100 Hz sub-carrier, and if you narrow 
things down enough, you can see the sidebands generated around it by the 
IRIG-H time code.  These two transmitters are low level modulated with 
linear amplification.


The 5, 10, and 15 MHz transmitters are plate-modulated Class-C and look 
markedly different.  The two sidebands are there, but so are their 2nd 
and 3rd harmonics [sometimes when WWV is really strong, I can make out 
the 4th harmonic].  The 100 Hz sub-carrier and the IRIG-H sidebands are 
there as you would expect, but they also surround the audio sidebands 
and harmonics.


WWV builds one baseband with all the tones, ticks, burps, codes, and 
voice and it modulates all 5 transmitters.  The difference between the 
TX is really striking and a bit disappointing.  I've always assumed WWV 
was the "gold-standard."


Fred K6DGW
Sparks NV DM09dn
Washoe County

--Northern California Contest Club
--CU in the Cal QSO Party
--7-8 Oct 2017

On 12/22/2016 10:22 PM, Vic Rosenthal wrote:

I didn't exactly do this, but I did investigate the effects of distortion on CW 
signals. I disconnected my P3 from the K3 and set the IF to 7 MHz. so it would 
act like a standalone spectrum analyzer.
I was interested in whether a class-C amplifier I had built would sharpen the 
keying enough to create noticeable clicks. The amplifier used minimal fixed 
bias to allow a small amount of resting plate current in transmit mode, with 
full class-C operating bias provided by a grid resistor.
I noted a broadening of the base of the signal on the P3, indicating that the 
signal was not as clean as the K3 alone.  But listening with another receiver 
on either side of the S9+30 dB signal didn't reveal audible clicks. I also 
asked other operators to listen and there were no reports of clicks.
I am sure that attempting to use that amplifier (a pair of 813s) on SSB would 
have gotten me ridden out of town on a rail!

Vic 4X6GP



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[Elecraft] Power Hunting...

[Dave Cole]

Hi,
I am sure I saw a few things a while ago on the K3 power hunting when 
running JT65...  Does anyone know what the dates were for those posts? 
I can search the archive...


My K3 hunts power levels when running WSJT-X, and I have the fifth bar 
in the AGC just flashing...  It still hunts...  Any ideas are welcome.

--
73s and thanks,
Dave
NK7Z
http://www.nk7z.net
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[Elecraft] K3 and WSJT-X 1.7

[Sverre Holm (LA3ZA)]

On the wsjtgroup at Yahoo, there are now two of us who have a problem with
the newly released version of the WSJT-X program and the audio output
level/VOX for the K3.

KY7M describes it as follows: "I have been transmitting perfectly in WSJT-X
1.6.  As soon as I install 1.7, my transmit light goes on, but no audio goes
out unless I turn off VOX and turn it on again. "

I have the same symptom and I could sort of resolve it by changing the audio
output level up and down on the WSJT-X program (Pwr slider). But in the end
it was so annoying that I reverted back to the old version, 1.6.

Does anyone understand what is going on?




-
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: 
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Re: [Elecraft] K3S Sound Board upgrade for K3

[RIchard Williams via Elecraft]

I think guy is referencing a "mod" that was first announced on the "blurb" 
sheet Elecraft published on the differences and what would be available at a 
later date to "update" the K3 to be similar to the new K3S.   Theoretically, at 
some future date there was/might be/possibly/maybe not, an upgrade to the audio 
section of the K3.  To date, I have not seen any announcement of such an 
upgrade available.  Quite possibly it moved from the "was" to the "maybe not" 
category.    Maybe Wayne can chime in with some up to date information;  to the 
best of my knowledge, this is the only future update mentioned in the blurb 
that has not become available.
Dick, K8ZTT

  From: Nr4c 
 To: Gary Hembree  
Cc: Elecraft@mailman.qth.net
 Sent: Friday, December 23, 2016 2:30 PM
 Subject: Re: [Elecraft] K3S Sound Board upgrade for K3
  
Ok. KIO3B. 

Sent from my iPhone
...nr4c. bill


> On Dec 22, 2016, at 10:30 PM, Gary Hembree  wrote:
> 
> Try this:
> http://www.elecraft.com/elecraft_prod_list.htm#kio3bupkt
> 
> 73
> Gary, N7IR
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Re: [Elecraft] IMD and CW

[K9MA]

Very interesting, Fred.  It makes sense, though, that plate modulated 
class-C amplifiers aren't terribly linear.  On the other hand, that kind 
of distortion probably doesn't affect WWV's mission.


I wonder if the AM broadcast industry achieves lower distortion. 
Feedback comes to mind.


73,

Scott  K9MA

 On 12/23/2016 15:53, Fred Jensen wrote:
Not CW, and this probably won't work in 4X-land, but if you want to 
see the difference a Class-C amp makes, set your P3 span to about 6 
KHz, and tune in WWV on its various frequencies. During the tone-on 
minutes, the 2.5 and 20 MHz signals will look as you expect an AM 
signal with a tone modulating it ... two sidebands on either side of 
the carrier.  If you look very close, you can see the 100 Hz 
sub-carrier, and if you narrow things down enough, you can see the 
sidebands generated around it by the IRIG-H time code.  These two 
transmitters are low level modulated with linear amplification.


The 5, 10, and 15 MHz transmitters are plate-modulated Class-C and 
look markedly different.  The two sidebands are there, but so are 
their 2nd and 3rd harmonics [sometimes when WWV is really strong, I 
can make out the 4th harmonic].  The 100 Hz sub-carrier and the IRIG-H 
sidebands are there as you would expect, but they also surround the 
audio sidebands and harmonics.


WWV builds one baseband with all the tones, ticks, burps, codes, and 
voice and it modulates all 5 transmitters.  The difference between the 
TX is really striking and a bit disappointing.  I've always assumed 
WWV was the "gold-standard."


Fred K6DGW
Sparks NV DM09dn
Washoe County

--Northern California Contest Club
--CU in the Cal QSO Party
--7-8 Oct 2017

On 12/22/2016 10:22 PM, Vic Rosenthal wrote:
I didn't exactly do this, but I did investigate the effects of 
distortion on CW signals. I disconnected my P3 from the K3 and set 
the IF to 7 MHz. so it would act like a standalone spectrum analyzer.
I was interested in whether a class-C amplifier I had built would 
sharpen the keying enough to create noticeable clicks. The amplifier 
used minimal fixed bias to allow a small amount of resting plate 
current in transmit mode, with full class-C operating bias provided 
by a grid resistor.
I noted a broadening of the base of the signal on the P3, indicating 
that the signal was not as clean as the K3 alone. But listening with 
another receiver on either side of the S9+30 dB signal didn't reveal 
audible clicks. I also asked other operators to listen and there were 
no reports of clicks.
I am sure that attempting to use that amplifier (a pair of 813s) on 
SSB would have gotten me ridden out of town on a rail!


Vic 4X6GP



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--
Scott  K9MA

k...@sdellington.us

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Re: [Elecraft] K3S Sound Board upgrade for K3

[Matt Murphy]

Dick is correct. I'd also like to see this update available.

73,
Matt NQ6N


On Fri, Dec 23, 2016 at 4:19 PM RIchard Williams via Elecraft <
elecraft@mailman.qth.net> wrote:

>
>
>
>
> I think guy is referencing a "mod" that was first announced on the "blurb"
> sheet Elecraft published on the differences and what would be available at
> a later date to "update" the K3 to be similar to the new K3S.
> Theoretically, at some future date there was/might be/possibly/maybe not,
> an upgrade to the audio section of the K3.  To date, I have not seen any
> announcement of such an upgrade available.  Quite possibly it moved from
> the "was" to the "maybe not" category.Maybe Wayne can chime in with
> some up to date information;  to the best of my knowledge, this is the only
> future update mentioned in the blurb that has not become available.
>
> Dick, K8ZTT
>
>
>
>   From: Nr4c 
>
>  To: Gary Hembree 
>
> Cc: Elecraft@mailman.qth.net
>
>  Sent: Friday, December 23, 2016 2:30 PM
>
>  Subject: Re: [Elecraft] K3S Sound Board upgrade for K3
>
>
>
> Ok. KIO3B.
>
>
>
> Sent from my iPhone
>
> ...nr4c. bill
>
>
>
>
>
> > On Dec 22, 2016, at 10:30 PM, Gary Hembree  wrote:
>
> >
>
> > Try this:
>
> > http://www.elecraft.com/elecraft_prod_list.htm#kio3bupkt
>
> >
>
> > 73
>
> > Gary, N7IR
>
> > __
>
> > Elecraft mailing list
>
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
>
> > Help: http://mailman.qth.net/mmfaq.htm
>
> > Post: mailto:Elecraft@mailman.qth.net
>
> >
>
> > This list hosted by: http://www.qsl.net
>
> > Please help support this email list: http://www.qsl.net/donate.html
>
> > Message delivered to n...@widomaker.com
>
> __
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Re: [Elecraft] K3 and WSJT-X 1.7

[Joe Subich, W4TV]

Is this when transmitting?  If so, try setting Mode = "None" and
Split Operation = "None" in the WSJT-X File -> Settings -> Radio
tab.

You may want to contact Elecraft Support to see if you can get access
to the field test firmware (5.56).  WSJT-X can (and often does) send
the split or data sub-mode commands to the K3 *AFTER* PTT has been
activated.  Receiving a Split or data sub-mode command while in
transmit will cause the K3/K3S/KX2/KX3 to mute transmitted audio.

The K3/K3S/KX2/KX3 all ignore the front panel split and mode buttons
while in transmit, one would assume that software developers would
do the same thing and not use commands that are forbidden from the
front panel while in transmit.  Unfortunately, the developers of
WSJT-X chose to ignore that simple fact (in spite of being warned on
many occasions of the potential for improper operation).  Wayne has
modified the firmware to mask the problematic commands (FA, DT, FT,
and FR,) beginning with firmware version 5.56 for the K3/K3S.  However
that version has not been released for public beta according to the
web page.

73,

   ... Joe, W4TV


On 12/23/2016 5:13 PM, Sverre Holm (LA3ZA) wrote:

On the wsjtgroup at Yahoo, there are now two of us who have a problem with
the newly released version of the WSJT-X program and the audio output
level/VOX for the K3.

KY7M describes it as follows: "I have been transmitting perfectly in WSJT-X
1.6.  As soon as I install 1.7, my transmit light goes on, but no audio goes
out unless I turn off VOX and turn it on again. "

I have the same symptom and I could sort of resolve it by changing the audio
output level up and down on the WSJT-X program (Pwr slider). But in the end
it was so annoying that I reverted back to the old version, 1.6.

Does anyone understand what is going on?




-
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: 
http://elecraft.365791.n2.nabble.com/K3-and-WSJT-X-1-7-tp7624923.html
Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] K3S Sound Board upgrade for K3

[Brian Hunt]

The original K3S FAQ listed an upgrade K3S DSP board that could be used in the 
K3. Upgrade is to the audio preamp and output stage. FAQ indicated it would be 
available "later this year". It doesn't appear on the order page so unknown if 
plans have changed or its just delayed. 

73,
Brian, K0DTJ
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Re: [Elecraft] K3S Sound Board upgrade for K3

[Gary Gregory]

Enquiring minds need to know?

Well maybe not all, but I do:-)

Gary

On Dec 24, 2016 8:51 AM, "Brian Hunt"  wrote:

> The original K3S FAQ listed an upgrade K3S DSP board that could be used in
> the K3. Upgrade is to the audio preamp and output stage. FAQ indicated it
> would be available "later this year". It doesn't appear on the order page
> so unknown if plans have changed or its just delayed.
>
> 73,
> Brian, K0DTJ
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Re: [Elecraft] IMD and CW

[Fred Jensen]

Google "ampliphase" ... OKA: "The Transmitter all broadcast engineers 
hate."  All linear phase modulation until AM magically squirts out the top.


Factoid:  When WWV was brand new, it transmitted farm reports for the 
Agriculture Department ... using Morse code.  I'm guessing the number of 
farmers fluent in Morse might have been two ... three tops.  I remember 
WWV using Morse, but by then it was Eastern Standard Time, not farm reports.


Fred K6DGW
Sparks NV DM09dn
Washoe County

--Northern California Contest Club
--CU in the Cal QSO Party
--7-8 Oct 2017On 12/23/2016 2:39 PM, K9MA wrote:

Very interesting, Fred.  It makes sense, though, that plate modulated 
class-C amplifiers aren't terribly linear.  On the other hand, that 
kind of distortion probably doesn't affect WWV's mission.


I wonder if the AM broadcast industry achieves lower distortion. 
Feedback comes to mind.


73,

Scott  K9MA


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Re: [Elecraft] IMD and CW

[Ron D'Eau Claire]

The fact that the RF amplifier is running Class C should not be an issue if
it is plate-modulated. Plate modulation is the "gold standard" because only
the RF carrier is being amplified in the Class C stage. Beyond that its
non-linearity is employed to mix the modulating signals with the RF carrier.
While the process is extremely linear, it takes a lot of audio level power -
at least 1/2 of the RF carrier power.  

Fred's observation makes me think WWV may be using some sort of "compromise"
system such as grid modulation rather than plate modulation. Much lower
audio (baseband) power required, but it is not as linear either. 

73, Ron AC7AC



-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of K9MA
Sent: Friday, December 23, 2016 2:39 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] IMD and CW

Very interesting, Fred.  It makes sense, though, that plate modulated
class-C amplifiers aren't terribly linear.  On the other hand, that kind of
distortion probably doesn't affect WWV's mission.

I wonder if the AM broadcast industry achieves lower distortion. 
Feedback comes to mind.

73,

Scott  K9MA

  On 12/23/2016 15:53, Fred Jensen wrote:
> Not CW, and this probably won't work in 4X-land, but if you want to 
> see the difference a Class-C amp makes, set your P3 span to about 6 
> KHz, and tune in WWV on its various frequencies. During the tone-on 
> minutes, the 2.5 and 20 MHz signals will look as you expect an AM 
> signal with a tone modulating it ... two sidebands on either side of 
> the carrier.  If you look very close, you can see the 100 Hz 
> sub-carrier, and if you narrow things down enough, you can see the 
> sidebands generated around it by the IRIG-H time code.  These two 
> transmitters are low level modulated with linear amplification.
>
> The 5, 10, and 15 MHz transmitters are plate-modulated Class-C and 
> look markedly different.  The two sidebands are there, but so are 
> their 2nd and 3rd harmonics [sometimes when WWV is really strong, I 
> can make out the 4th harmonic].  The 100 Hz sub-carrier and the IRIG-H 
> sidebands are there as you would expect, but they also surround the 
> audio sidebands and harmonics.
>
> WWV builds one baseband with all the tones, ticks, burps, codes, and 
> voice and it modulates all 5 transmitters.  The difference between the 
> TX is really striking and a bit disappointing.  I've always assumed 
> WWV was the "gold-standard."
>
> Fred K6DGW
> Sparks NV DM09dn
> Washoe County
>
> --Northern California Contest Club
> --CU in the Cal QSO Party
> --7-8 Oct 2017
>
> On 12/22/2016 10:22 PM, Vic Rosenthal wrote:
>> I didn't exactly do this, but I did investigate the effects of 
>> distortion on CW signals. I disconnected my P3 from the K3 and set 
>> the IF to 7 MHz. so it would act like a standalone spectrum analyzer.
>> I was interested in whether a class-C amplifier I had built would 
>> sharpen the keying enough to create noticeable clicks. The amplifier 
>> used minimal fixed bias to allow a small amount of resting plate 
>> current in transmit mode, with full class-C operating bias provided 
>> by a grid resistor.
>> I noted a broadening of the base of the signal on the P3, indicating 
>> that the signal was not as clean as the K3 alone. But listening with 
>> another receiver on either side of the S9+30 dB signal didn't reveal 
>> audible clicks. I also asked other operators to listen and there were 
>> no reports of clicks.
>> I am sure that attempting to use that amplifier (a pair of 813s) on 
>> SSB would have gotten me ridden out of town on a rail!
>>
>> Vic 4X6GP
>>
>
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> k...@sdellington.us


--
Scott  K9MA

k...@sdellington.us

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Re: [Elecraft] IMD and CW

[Alan Bloom]

I believe the K3/K3S use a raised sinusoid key shaping.  It is a good 
compromise to reduce the bandwidth without excessive ringing/backwave.


In the bad old days, CW key shaping was typically a simple R-C filter on 
the key line.  That resulted in an exponential rise and fall, which 
resulted in more key clicks for a given rise/fall time than a raised 
sinusoid.


Alan N1AL


On 12/23/2016 01:30 PM, K9MA wrote:

On 12/23/2016 12:11, Alan Bloom wrote:

For a CW signal, the nonlinearity of a typical power amplifier should
have the effect of shortening the rise and fall times.  That does
indeed widen the transmitted bandwidth.  But intuitively, it seems
like the distortion would have to be really bad to shorten the
rise/fall times by much.  You could always compensate for it by
adjusting the K3 for softer key shaping.

Alan N1AL

I think it's a little more complicated than that:  The K3 shapes the CW
waveform very carefully, to minimize bandwidth.  (I think it's
equivalent to passing the signal through a narrow bandpass filter.)
Obviously, any distortion downstream is going to compromise that careful
shaping.  However, based on my intuition and Vic's results, I suspect it
would take a truly terrible amount of distortion to significantly
increase the CW bandwidth.  Given that the K3 is so much cleaner than
many other popular radios, I doubt we need to worry.

73,

Scott K9MA


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Re: [Elecraft] IMD and CW

[Fred Jensen]

This has drifted fairly far from the original.  Thus encouraged ...

I wondered about that and being retired I pursued it, ultimately with 
the tech folks [well, one folk] at WWV who repeatedly assured me that 
they were on-frequency and that their time information was correct which 
of course was never the issue.  Somewhere in all the words I read about 
the station, I did find a reference to plate modulated Class-C 
transmitters but I have lost it's QTH on this disk drive.


Most plate modulators ran Class-B or -AB, and were subject to cross-over 
non-linearities.  The 5, 10, and 15 MHz signals look very much the same 
on the spectrum display which [weakly] suggests the unexpected 
distortion products may arise somewhere in the baseband chain.  The 2.5 
and 20 MHz transmitters, being low-level modulated, may tap that chain 
before the distortion is introduced.


ARC-5's, when cathode-keyed, were notorious for key clicks, almost as 
bad as the Yeasu rigs of recent eras. [:-)  Of course, for my K3, the 
"carrier-balance" and "opposite sideband suppression" is perfect.  I 
think, but don't know, that the K3 shapes the CW with a raised-cosine 
filter.  With strong signals, it *is* possible to identify a K3 by its 
CW spectrum, particularly in the WF.


Fred K6DGW
Sparks NV DM09dn
Washoe County

--Northern California Contest Club
--CU in the Cal QSO Party
--7-8 Oct 2017

On 12/23/2016 3:46 PM, Ron D'Eau Claire wrote:

The fact that the RF amplifier is running Class C should not be an issue if
it is plate-modulated. Plate modulation is the "gold standard" because only
the RF carrier is being amplified in the Class C stage. Beyond that its
non-linearity is employed to mix the modulating signals with the RF carrier.
While the process is extremely linear, it takes a lot of audio level power -
at least 1/2 of the RF carrier power.

Fred's observation makes me think WWV may be using some sort of "compromise"
system such as grid modulation rather than plate modulation. Much lower
audio (baseband) power required, but it is not as linear either.

73, Ron AC7AC



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Re: [Elecraft] IMD and CW

[Ron D'Eau Claire]

Not in my experience as a broadcast engineer in the 1950's. Class C
amplifiers, plate modulated, were the standard low distortion transmitters
for decades, just as they were used in the best A.M. Ham rigs like the
Johnson Kilowatt. 

But, as the big commercial stations came on the air running 50 kw the
scramble was on to find an alternative to having an audio amplifier that
could produce a full 25 kw of clean audio to modulate them, requiring a
modulation transformer the size of one of the huge transformers at the local
power mains distribution center. That is when, IMX, all sorts of alternative
schemes for modulation, all of which were less "clean" (although still very
good when handled correctly) came into use. 

Stations chose more complex and careful adjustment during operation than
investment in hardware and facilities. But, after all, in the US the station
had to have a broadcast engineer monitoring the transmitter at all times,
logging critical readings every half hour. 

73 Ron AC7AC

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Fred
Jensen
Sent: Friday, December 23, 2016 4:38 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] IMD and CW

This has drifted fairly far from the original.  Thus encouraged ...

I wondered about that and being retired I pursued it, ultimately with the
tech folks [well, one folk] at WWV who repeatedly assured me that they were
on-frequency and that their time information was correct which of course was
never the issue.  Somewhere in all the words I read about the station, I did
find a reference to plate modulated Class-C transmitters but I have lost
it's QTH on this disk drive.

Most plate modulators ran Class-B or -AB, and were subject to cross-over
non-linearities.  The 5, 10, and 15 MHz signals look very much the same on
the spectrum display which [weakly] suggests the unexpected distortion
products may arise somewhere in the baseband chain.  The 2.5 and 20 MHz
transmitters, being low-level modulated, may tap that chain before the
distortion is introduced.

ARC-5's, when cathode-keyed, were notorious for key clicks, almost as bad as
the Yeasu rigs of recent eras. [:-)  Of course, for my K3, the
"carrier-balance" and "opposite sideband suppression" is perfect.  I think,
but don't know, that the K3 shapes the CW with a raised-cosine filter.  With
strong signals, it *is* possible to identify a K3 by its CW spectrum,
particularly in the WF.

Fred K6DGW
Sparks NV DM09dn
Washoe County


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Re: [Elecraft] Power Hunting...

[Nr4c]

AGC just flashing?  Do you mean ALC?  

Look at voltage while transmitting.  

Sent from my iPhone
...nr4c. bill


> On Dec 23, 2016, at 5:02 PM, Dave Cole  wrote:
> 
> Hi,
> I am sure I saw a few things a while ago on the K3 power hunting when running 
> JT65...  Does anyone know what the dates were for those posts? I can search 
> the archive...
> 
> My K3 hunts power levels when running WSJT-X, and I have the fifth bar in the 
> AGC just flashing...  It still hunts...  Any ideas are welcome.
> -- 
> 73s and thanks,
> Dave
> NK7Z
> http://www.nk7z.net
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Re: [Elecraft] K3 and WSJT-X 1.7

[Sverre Holm (LA3ZA)]

Hi Joe

Thanks for the explanation. It sounds like this is it as it explains why the
K3's VOX has to be reengaged in order to continue transmitting.





-
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: 
http://elecraft.365791.n2.nabble.com/K3-and-WSJT-X-1-7-tp7624923p7624934.html
Sent from the Elecraft mailing list archive at Nabble.com.
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[Elecraft] K2 / DSP

[Dauer, Edward]

I have never had a K2 with a KDSP2 so I can’t make an informed comparison; but 
I can say that, having one in both of my K2s, the KAF2 makes the K2’s 
performance truly outstanding.  As I understand it, having both was never 
possible – it was one or the other.  Maybe someone can offer a comparison . . .

Ted, KN1CBR

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Re: [Elecraft] IMD and CW

[Jan Erik Holm]

On 2016-12-23 19:11, Alan Bloom wrote:


You could always compensate for it by adjusting the K3 for softer
key shaping.

Alan N1AL


How do you do that ?

/ 73 Jim
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Re: [Elecraft] IMD and CW

[Alan Bloom]

Apparently you can't.  I must have been thinking of the weight adjustment.

Alan N1AL


On 12/23/2016 09:22 PM, Jan Erik Holm wrote:

On 2016-12-23 19:11, Alan Bloom wrote:


You could always compensate for it by adjusting the K3 for softer
key shaping.

Alan N1AL


How do you do that ?

/ 73 Jim


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Re: [Elecraft] IMD and CW

[Jan Erik Holm]

Yes was thinking it was something new.
Thank´s Alan

73 merry xmas / Jim SM2EKM

On 2016-12-24 06:23, Alan Bloom wrote:

Apparently you can't.  I must have been thinking of the weight adjustment.

Alan N1AL


On 12/23/2016 09:22 PM, Jan Erik Holm wrote:

On 2016-12-23 19:11, Alan Bloom wrote:


You could always compensate for it by adjusting the K3 for softer
key shaping.

Alan N1AL


How do you do that ?

/ 73 Jim




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[Elecraft] K3S - fldigi - Macintosh

[Bill DeVore]

Can anyone point me to a good Mac specific resource explaining how to set up 
fldigi to run on a Macintosh so it works with my K3S. The software's multitude 
of different menus has me stumped with an ever increasing frustration level. 
I've had many enjoyable SSB and CW QSOs so I know the antenna, feed line and 
equipment is working. 

Bill - W3PNM

Sent from my iPad
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[Elecraft] OT: Rose wishes all ...

[Rose]

a Merry Christmas and I hope you enjoy your
Holiday season.

I've was extremely blessed earlier this year when
the oncologist reading my last CT scan gave me
a literal thumbs up when he was finished.  A few
more months and I should be declared "cancer
free".

December 30th will be Ken and my 60th wedding
anniversary.  My aren't we fortunate?

Most importantly ... enjoy and treasure your family
and friends.

73!

Rose (N7HKW) and Ken (K0PP)
elecraftcov...@gmail.com
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Re: [Elecraft] Power Hunting...

[Dave Cole]

Hi,
I did mean ALC, and the voltage is not moving at all.  Sits at 14.1.

73s and thanks,
Dave
NK7Z
http://www.nk7z.net

On 12/23/2016 06:52 PM, Nr4c wrote:

AGC just flashing?  Do you mean ALC?

Look at voltage while transmitting.

Sent from my iPhone
...nr4c. bill



On Dec 23, 2016, at 5:02 PM, Dave Cole  wrote:

Hi,
I am sure I saw a few things a while ago on the K3 power hunting when running 
JT65...  Does anyone know what the dates were for those posts? I can search the 
archive...

My K3 hunts power levels when running WSJT-X, and I have the fifth bar in the 
AGC just flashing...  It still hunts...  Any ideas are welcome.
--
73s and thanks,
Dave
NK7Z
http://www.nk7z.net
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Re: [Elecraft] CW macro for K-pod

[Leroy Marion]

Is there a macro that will send the CW ID when you are in side band?
I have my K3s set to key CW in in side band, but the macro below does not 
Send when in side band.

Thanks  Leroy AB7CE

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Cady,
Fred
Sent: Friday, December 23, 2016 2:31 PM
To: Mike Weir ; elecraft@mailman.qth.net
Subject: Re: [Elecraft] CW macro for K-pod

Hi Mike,

You can use the KY command to do that.

Use the K3 Utility to program separate macros with:

KY VE3WDM;

KY 599 CA;

KY TU;

Write them to the K3.

Then use the KPod buttons to send.

You can't send an increasing number for a report although if you have a P3
with SVGA you could.

73,

Fred KE7X


For all KE7X Elecraft books, see www.ke7x.com

(Macro programming book coming)



From: Elecraft  on behalf of Mike Weir

Sent: Friday, December 23, 2016 12:17 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] CW macro for K-pod

Good afternoon all, here is what I want to do.I have the K-pod
and I wanted to set up some of the F buttons to send CW contest replies such
as:

My call

TU

Contest exchange and if possible an increasing serial exchange

Just not sure how to set all this up?

Thanks in advance

Mike

VE3WDM

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delivered to fc...@montana.edu

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Re: [Elecraft] IMD and CW

[Jim Brown]

On Fri,12/23/2016 10:11 AM, Alan Bloom wrote:
You could always compensate for it by adjusting the K3 for softer key 
shaping. 


Wayne carefully shaped the keying waveform to minimize occupied 
bandwidth while maintaining good clarity at high keying speeds, and he 
purposely did not allow users to screw it up. :)


73, Jim K9YC


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