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OT - WSJT-X & K3s

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Barry K3NDM

Re: OT - WSJT-X & K3s

Lynn,
I'm not sure whether I agree or not. I have no problem starting
simple and seeing if it works. I have been in a position of needing to
find what was happening without knowing what all was actually going on,
something akin to solving for 2 unknowns with only one equation.
However, I think you really need to know where you are going and
establish a framework for that. I'm not convinced starting with just a
single mode generator/decoder is the way to go. You are going to need to
do at least some logging ability. Here you are, two requirements and no
framework.

I know I've been doing this for a long time, and I kinda knew where
I was trying to go. So, I built my framework first, and then started to
hang other applications on it. It appears to me we view things from
different perspectives. Do I think you are wrong? NO, I don't. But it is
how I like to build up a functionality; it must be my engineering
background. :-)

73,
Barry
K3NDM

------ Original Message ------
From: "Lynn W. Taylor, WB6UUT" <[hidden email]>
To: [hidden email]
Sent: 9/4/2017 8:55:02 PM
Subject: Re: [Elecraft] OT - WSJT-X & K3s

>Barry,
>
>You missed my point in both of your responses.
>
>Here it is again:
>
> * START SIMPLE *
>
>One thing I've learned as a computer scientist with a few decades
>experience is that someone can spend hours trying staring at one part a
>problem when the issue is in an entirely different place.
>
>That was the essence of my post.
>
>Start simple doesn't mean *FINISH SIMPLE* -- not by any means.
>
>It's just easier to solve problems when you don't have a ton of moving
>parts. Get two working, then add the third, then add the fourth, etc.
>
>73 -- Lynn
>
>On 9/4/2017 4:28 PM, Barry wrote:
>>Lynn,
>> You are correct there is a lot of gee whiz software out there.
>>And, the usual connection is serial port, even when that port is
>>created by a USB connection. I have a hard time understanding why
>>there is so much angst over serial ports. Windows has a window call
>>device manger. In it, you can see what ports are being defined. If you
>>use a USB connection, you can watch the port announce itself. Just for
>>clarification, I AM NOT a computer scientist and need my spell checker
>>to get it spelled correctly. However, I did learn about device manager
>>and have been happy ever since.
>>
>> If you plan on having your logging software know where you are
>>and band you're on and track other activities, you really don't get
>>much choice; you must be able to share the data to/from the radio. The
>>best thing, best behaved, is Win4K3 for the Elecraft users, regardless
>>of whether you are a KX3 or K3 user. I am being told the KX2 is also
>>fine and my K3s works great. The one thing I have found here and 1
>>other station is having forgotten which ports I was using for what; I
>>now have that written down and life is sweet.
>>
>>73,
>>Barry
>>K3NDM
>>
>>------ Original Message ------
>>From: "Lynn W. Taylor, WB6UUT" <[hidden email]>
>>To: [hidden email]
>>Sent: 9/4/2017 4:33:00 PM
>>Subject: Re: [Elecraft] OT - WSJT-X & K3s
>>
>>>The reason I asked is that it seems that there is a bunch of
>>>wonderful software out there, that it's all pretty awesome.
>>>
>>>Brand new users struggle mightily with things like serial ports when
>>>they aren't strictly needed.
>>>
>>>So, start with just the sound card (and VOX). Then add the serial
>>>port. Then try adding port sharing.
>>>
>>>... and remember, the first rule of intelligent tinkering is to save
>>>all the parts.
>>>
>>>73 -- Lynn, WB6UUT
>>>
>>>On 9/4/2017 1:07 PM, Jim Brown wrote:
>>>>Yep! The serial connection is needed only for frequency control, and
>>>>WSJT-X works just fine without it. I don't do any port sharing,
>>>>giving WSJT-X the port by itself, and log manually in DXKeeper.
>>>______________________________________________________________
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>>>Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>>>
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>>>Message delivered to [hidden email]
>>
>>
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Don Wilhelm

Re: OT - WSJT-X & K3s

In reply to this post by Bill Frantz

With digital modes, there is no problem of room noise activating the
VOX. All the audio is coming from the soundcard.

Yes, VOX per mode would be a great addition to the KX3/K3/K3S firmware.

73,
Don W3FPR

On 9/4/2017 10:44 PM, Bill Frantz wrote:

> Don is absolutely right about the usability of the VOX built into the
> Elecraft rigs. That's what I use now since, since I upgraded my K3 to
> have the internal sound card.
>
> When I was using a SignaLink, i actually built a cable for the PTT. The
> reason is that the K3 does not save VOX by mode and I was always getting
> VOX on when I switched to voice modes. I have too many conversations
> with others in my shack to be able to use VOX.
>
> Now I'm back to having to remember to switch VOX on and off as I change
> modes. When I forget I either don't transmit on my first digital
> transmission, or I do transmit when I talk near the microphone. I'm a
> really slow learner.
>
> 73 Bill AE6JV
>
> On 9/4/17 at 4:55 PM, [hidden email] (Don Wilhelm) wrote:
>
>> As for the SignaLink VOX, it is generated in the SignaLink from the
>> audio stream. The KX3, K3/K3S VOX will work just as well as the "PTT"
>> from the SignaLink. Due to the single channel implementation in the
>> SignaLink, it cannot be used for panadapter applications.
>
> -----------------------------------------------------------------------
> Bill Frantz | I like the farmers' market | Periwinkle
> (408)356-8506 | because I can get fruits and | 16345 Englewood Ave
> www.pwpconsult.com | vegetables without stickers. | Los Gatos, CA 95032
>
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Wes Stewart-2

Re: OT - WSJT-X & K3s

As would VOX gain per mode.

On 9/4/2017 8:15 PM, Don Wilhelm wrote:
> With digital modes, there is no problem of room noise activating the VOX. All
> the audio is coming from the soundcard.
>
> Yes, VOX per mode would be a great addition to the KX3/K3/K3S firmware.

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Joe Subich, W4TV-4

Re: OT - WSJT-X & K3s

In reply to this post by Jim Brown-10

On 9/4/2017 11:12 PM, Jim Brown wrote:

> http://k9yc.com/USB_Interfaces.pdf

Since you specifically cite me: the output of a sound card is typically
1 Volt RMS or more.

A transceiver designed for use with a dynamic mic (Kenwood, TenTec,
Kenwood, etc.) typically expects 5 mV (or less) on the mic input. The
attenuation needed to reduce 1 V to 50 mV is 46 dB (20log(.005/1)).

Transceivers using electret mics (e.g., Icom), have a typical mic input
around 0.05 V RMS which implies the need for a 26 dB attenuator.

Note, the mic preamp stage of transceivers designed for an electret mic
typically has lower gain (~20 dB less) than those with dynamic mics are
are thus far less likely to be driven into clipping.

73,

... Joe, W4TV

On 9/4/2017 11:12 PM, Jim Brown wrote:

> On 9/4/2017 5:05 PM, Barry wrote:
>> with digital modes for 2 reasons, they are inexpensive and they can
>> key your transmitter directly.
>
> The only good reason I can think of for using the SignaLink is if that's
> all you have and you can't afford to replace it. It is NOT a good audio
> interface. More times than I can count, I've posted a link to my
> recommendations for much better audio interfaces that are MUCH cheaper,
> AND they're stereo. That means, for example, that with two VFOs or two
> receivers, you can have two instances of WSJT-X running either copying
> different frequencies or doing diversity reception! In addition to WSJT
> modes, I use my stereo sound card to do SO2R SSB and RTTY contesting.
>
> http://k9yc.com/USB_Interfaces.pdf
>
> And as Don has noted, the SignaLink derives PTT from the audio stream by
> a process known as VOX. :) Your rig can do that as well.
>
> 73, Jim K9YC
>
> ______________________________________________________________
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rich hurd WC3T

Re: OT - WSJT-X & K3s

In reply to this post by Barry K3NDM

I cannot agree with your recommendation of the Syba sound card.

Clicking on the link you provided tells me that I purchased this from
Amazon on February 18, 2017. It therefore lies in a box with all the
other USB sound interfaces that I purchased and spent WAY too much time
playing with to try and get working with my KX3.

Instead, I have the SignaLink USB along with the Elecraft KX3 personality
module and interface cable, and once I got over my initial hesitation to
use it (a hesitation borne of the comments of "everybody says it's an
inferior sound card"; because of that, I was loath to put it in service) I
find that it is a satisfactory solution; it doesn't have nearly the fiddle
factor and instabilities that I faced with the other interfaces and it
satisfies my needs admirably.

So I guess the one phrase I can use is "Different strokes and all that"
when it comes to interfaces. :)

---
72,
Rich Hurd / WC3T / DMR: 3142737
PA Army MARS, Northampton County RACES, EPA-ARRL Public Information Officer
for Scouting
Latitude: 40.761621 Longitude: -75.288988 (40°45.68' N 75°17.33' W) Grid:
*FN20is*

On Mon, Sep 4, 2017 at 10:24 PM, Walter Underwood <[hidden email]>
wrote:

> I cannot agree with the Signalink USB being inexpensive. It is at least
> $100 and is inferior to a $12 USB sound interface, specifically the Syba
> SD-AUD20101.
>
> https://smile.amazon.com/External-Adapter-Optical-Windows-SD-AUD20101/dp/
> B006SF68P2/ <https://smile.amazon.com/External-Adapter-Optical-
> Windows-SD-AUD20101/dp/B006SF68P2/>
>
> wunder
> K6WRU
> Walter Underwood
> CM87wj
> http://observer.wunderwood.org/ (my blog)
>
> > On Sep 4, 2017, at 5:05 PM, Barry <[hidden email]> wrote:
> >
> > Don,
> > I agree with you. I may not have been sufficiently clear. You do need
> a good stereo card for the spectrum display and another card, typically,
> for digital modes. I use and usually recommend the Signalink USB for use
> with digital modes for 2 reasons, they are inexpensive and they can key
> your transmitter directly. There has been a lot of discussion on what card
> to use for the spectrum display and a good source of data on cards is
> available on the LP-Pan site. I won't get into what I do and card I use as
> I don't want to start another branch in this discussion. Having said that,
> I am using a good professional level card for spectrum and CW Skimmer.
> >
> > 73,
> > Barry
> > K3NDM
> >
> > ------ Original Message ------
> > From: "Don Wilhelm" <[hidden email]>
> > To: "Barry" <[hidden email]>; "Lynn W. Taylor, WB6UUT" <
> [hidden email]>; [hidden email]
> > Sent: 9/4/2017 7:55:55 PM
> > Subject: Re: [Elecraft] OT - WSJT-X & K3s
> >
> >> Barry,
> >>
> >> I would disagree with you on your SignaLink recommendation.
> >> The SignaLink is a single channel soundcard, and its sound quality is
> "just OK" for digital modes. Yes, there are connecting cables for several
> transceivers available from SignaLink that make connection to the
> transceiver easy and straightforward - but those are the only advantages.
> >>
> >> There are external soundcards that will do a much better job for a lot
> less money. Especially if you are planning to use the RX I/Q outputs on
> the KX3 or the outputs of LP-Pan for the K3/K3S for a panadapter display.
> A good panadapter display wants to use a soundcard with a 192kHz rating and
> typically 24 bits.
> >> You must have a stereo soundcard for the panadapter function, and the
> SignaLink has only the left channel present.
> >> As for the SignaLink VOX, it is generated in the SignaLink from the
> audio stream. The KX3, K3/K3S VOX will work just as well as the "PTT" from
> the SignaLink. Due to the single channel implementation in the SignaLink,
> it cannot be used for panadapter applications.
> >>
> >> So if you want a soundcard that can be used for both soundcard data
> modes and a panadapter display, get a good external soundcard (look for
> 192kHz/24 bits). It will likely have a lower noise floor than the
> SignaLink as well.
> >>
> >> Soundcards that have been tested for Panadapter use are listed on the
> www.telepostinc.com website. There are some there that are 96kHz/24 bit
> which will not allow the full 192kHz width of the panadapter applications,
> but that is usable if you only want to display up to 96kHz of the band.
> >>
> >> Of course, it you want a superior panadapter display, consider the P3
> (for the K3/K3S) or the PX3 for the KX3.
> >>
> >> 73,
> >> Don W3FPR
> >>
> >>
> >> On 9/4/2017 7:11 PM, Barry wrote:
> >> Use a Signalink USB to connect to your KX3 for
> >>> digital modes. It uses a USB connection to your computer and will key
> the transmitter when you tell the software to transmit. The Signalink uses
> an internal vox to know what to do and an acceptable sound card that will
> take the radio's audio and feed it to your digital software. You can plug a
> powered speaker into the Signalink's aux out and that will allow you to
> change modes without need to do anything that remove the mic and replace it
> with Signalink's mike cable. This allow greater ease in mode changing, and
> you can continuously monitor you received audio. Levels are set on the
> Signalink's front panel.
> >
> > ______________________________________________________________
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Neil Zampella

Re: OT - WSJT-X & K3s

In reply to this post by Wes Stewart-2

If you're using your USB interface cable, such as the KXUSB for the KX3,
there's no need to have VOX to trigger anything.
The only problem with VOX and the soundcard is if you have only one
soundcard, and you also have Windows sounds going to it.

Neil, KN3ILZ

On 9/5/2017 8:39 AM, Wes Stewart wrote:
> As would VOX gain per mode.
>
> On 9/4/2017 8:15 PM, Don Wilhelm wrote:
>> With digital modes, there is no problem of room noise activating the
>> VOX. All the audio is coming from the soundcard.
>>
>> Yes, VOX per mode would be a great addition to the KX3/K3/K3S firmware.
>
>

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Jim Brown-10

Re: OT - WSJT-X & K3s

In reply to this post by Joe Subich, W4TV-4

On 9/5/2017 6:24 AM, Joe Subich, W4TV wrote:
>
> A transceiver designed for use with a dynamic mic (Kenwood, TenTec,
> Kenwood, etc.) typically expects 5 mV (or less) on the mic input. The
> attenuation needed to reduce 1 V to 50 mV is 46 dB (20log(.005/1)).

Joe,

While I greatly respect your engineering, the output of a dynamic mic
varies widely depending on what it's hearing. The classic "little old
lady on a lavalier" in a TV studio may produce only 5-10mV, but when
worked close to the mouth, as most ham mics should be used, the output
is more like 100 mV. The fictional lead vocalist Arthur Leatherlungs can
easily drive a dynamic mic to 1 V. Not only that, many ham mics are
electrets, which tend to have output levels equal to or greater than
dynamic mics. The mic input stage must accommodate all of these mics.
Although I've not measured input clip levels of ham gear, I'd be quite
surprised if they clipped below about 100 mV. And clip level is what
matters.

As to computer output levels -- while RATED output level for clip is
typically in the range of 1V RMS, some I've measured suffer from
increasing distortion 6 dB below their actual clip level. I've measured
-30 dB harmonics just below clip, and -40dB at 6 dB below maximum
output. Further, while pro systems are correctly adjusted so that all
stages in a signal chain clip at the same level to maximize signal to
noise, those systems are going for 100 dB or better. Few ham systems
need better than 50 dB SNR in the audio spectrum, but distortion
products can be critical. SO -- the output of a computer audio interface
should not be run at its maximum level, certainly not hotter than about
0.5V RMS.

Years ago, the venerable Shure M67 and M68 were designed so that they
clipped in the range of 50 mV, and Shure had to sell inline pads (10-15
dB attenuators) to prevent overload. A new company, Tapco, led by Greg
Mackie developed new inexpensive small mixers to compete with Shure, and
ended up eating Shure's lunch with an input circuit with feedback
control of input gain that handled much higher signals without overload.
For at least 40 years, any pro mic input will handle signals up to at
least 3V RMS through the combined use of switchable pads and feedback
gain control.

73, Jim K9YC

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Jim Brown-10

Re: OT - WSJT-X & K3s

In reply to this post by Neil Zampella

On 9/5/2017 9:32 AM, Neil Zampella wrote:
> The only problem with VOX and the soundcard is if you have only one
> soundcard, and you also have Windows sounds going to it.

This can easily be turned off from Windoze Control Panel.

73, Jim K9YC

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k6dgw

Re: OT -What is remembered?

In reply to this post by Don Wilhelm

<Subject changed>

I've wondered for quite awhile if Elecraft would have any interest in
expending some resources [e.g. $] on a matrix, maybe a downloadable PDF,
that would have xcvr across the top and all the parameters that are
"remembered" in one way or another. The cells in the matrix could be
coded for how it is remembered ... by band, by band & mode, etc. That
would be super useful for me, I'd even pay for it on a laminated card.
I would think that such a matrix already exists for use during FW
development.

73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 9/4/2017 8:15 PM, Don Wilhelm wrote:
> Yes, VOX per mode would be a great addition to the KX3/K3/K3S firmware.
>
> 73,
> Don W3FPR

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Joe Subich, W4TV-4

Re: OT - WSJT-X & K3s

In reply to this post by Jim Brown-10

> This can easily be turned off from Windoze Control Panel.

Not entirely. Windows will still generate error sounds under
some circumstances. In addition, other software can generate
unexpected "noises".

73,

... Joe, W4TV

On 9/5/2017 1:19 PM, Jim Brown wrote:

> On 9/5/2017 9:32 AM, Neil Zampella wrote:
>> The only problem with VOX and the soundcard is if you have only one
>> soundcard, and you also have Windows sounds going to it.
>
> This can easily be turned off from Windoze Control Panel.
>
> 73, Jim K9YC
>
> ______________________________________________________________
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Joe Subich, W4TV-4

Re: OT - WSJT-X & K3s

In reply to this post by Jim Brown-10

Jim,

Get some real world experience with typical amateur transceivers.
Dig out the service manuals and run their mic circuits through SPICE
or one of the other software programs that will show you where they
clip. You will find almost without fail, the common emitter transistor
preamp with unbypassed emitter bias resistor is, in fact, clipping well
below 1V. Those preamps invariably have between 26 and 30 dB of gain
and the outputs are connected in parallel (with or without switching)
with the "Line In" (old Patch jack which was typically rated for 100 -
500 mV) which then drove the audio stage which included the mic gain
control.

Remember, we're talking about *AMATEUR* equipment - not professional
and broadcast equipment with its 1V or 4V P-P standard "Line" levels
and wide range mic preamps that provided standard level outputs

Some newer rigs do better - high impedance, low noise op amp preamps
that are much less sensitive to overload. TenTec had a "line" input
with a 4V P-P tolerance but those "features" are far from the norm,
particularly considering the number of 25 and 30 year old rigs still
on the air.

In any case, a typical dynamic microphone - professional or amateur -
is rated around -55 dBV/Pascal (check Shure, EV, etc.) some may be a
more sensitive, some less. For those who do not know, 1 Pascal is a
94 dB Sound Pressure Level (think traffic on a busy roadway) - nearly
25 dB above the EPA threshold for hearing protection! -55dBV is in
*the millivolt range*. 5 mV is a decent level for normal conversation
with a dynamic microphone within 6" of the lips.

All of this information is available from public sources and a little
study.

73,

... Joe, W4TV

On 9/5/2017 1:17 PM, Jim Brown wrote:

> On 9/5/2017 6:24 AM, Joe Subich, W4TV wrote:
>>
>> A transceiver designed for use with a dynamic mic (Kenwood, TenTec,
>> Kenwood, etc.) typically expects 5 mV (or less) on the mic input. The
>> attenuation needed to reduce 1 V to 50 mV is 46 dB (20log(.005/1)).
>
> Joe,
>
> While I greatly respect your engineering, the output of a dynamic mic
> varies widely depending on what it's hearing. The classic "little old
> lady on a lavalier" in a TV studio may produce only 5-10mV, but when
> worked close to the mouth, as most ham mics should be used, the output
> is more like 100 mV. The fictional lead vocalist Arthur Leatherlungs can
> easily drive a dynamic mic to 1 V. Not only that, many ham mics are
> electrets, which tend to have output levels equal to or greater than
> dynamic mics. The mic input stage must accommodate all of these mics.
> Although I've not measured input clip levels of ham gear, I'd be quite
> surprised if they clipped below about 100 mV. And clip level is what
> matters.
>
> As to computer output levels -- while RATED output level for clip is
> typically in the range of 1V RMS, some I've measured suffer from
> increasing distortion 6 dB below their actual clip level. I've measured
> -30 dB harmonics just below clip, and -40dB at 6 dB below maximum
> output. Further, while pro systems are correctly adjusted so that all
> stages in a signal chain clip at the same level to maximize signal to
> noise, those systems are going for 100 dB or better. Few ham systems
> need better than 50 dB SNR in the audio spectrum, but distortion
> products can be critical. SO -- the output of a computer audio interface
> should not be run at its maximum level, certainly not hotter than about
> 0.5V RMS.
>
> Years ago, the venerable Shure M67 and M68 were designed so that they
> clipped in the range of 50 mV, and Shure had to sell inline pads (10-15
> dB attenuators) to prevent overload. A new company, Tapco, led by Greg
> Mackie developed new inexpensive small mixers to compete with Shure, and
> ended up eating Shure's lunch with an input circuit with feedback
> control of input gain that handled much higher signals without overload.
> For at least 40 years, any pro mic input will handle signals up to at
> least 3V RMS through the combined use of switchable pads and feedback
> gain control.
>
> 73, Jim K9YC
>
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Gary Smith-2

Re: OT - WSJT-X & K3s

In reply to this post by Luther Phillips

The topic has recently drifted a bit from
my original question but the information
given has been interesting. As I'm using a
K3s and its internal sound card, I put
away my Creative USB 0404 card, though it
was a fine card to use with the K3.

I have gotten WSJT running though I
haven't yet scored a QSO, this means I
probably have something not set quite
right yet. I do have a question specific
for the K3s, maybe K3; Do I have the K3s
set in USB mode or in the data mode when
using WSJT?

And thank you to all who replied to my
initial questions, I truly appreciate it.

73,

Gary
KA1J

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Nr4c

Re: OT - WSJT-X & K3s

In reply to this post by Neil Zampella

Go to the Mixer in Windows and MUTE Windows System sounds.

Sent from my iPhone
...nr4c. bill

> On Sep 5, 2017, at 12:32 PM, Neil Zampella <[hidden email]> wrote:
>
> If you're using your USB interface cable, such as the KXUSB for the KX3, there's no need to have VOX to trigger anything.
> The only problem with VOX and the soundcard is if you have only one soundcard, and you also have Windows sounds going to it.
>
> Neil, KN3ILZ
>
>
>> On 9/5/2017 8:39 AM, Wes Stewart wrote:
>> As would VOX gain per mode.
>>
>>> On 9/4/2017 8:15 PM, Don Wilhelm wrote:
>>> With digital modes, there is no problem of room noise activating the VOX. All the audio is coming from the soundcard.
>>>
>>> Yes, VOX per mode would be a great addition to the KX3/K3/K3S firmware.
>>
>>
>
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Nr4c

Re: OT - WSJT-X & K3s

In reply to this post by Gary Smith-2

If you have a K3S and are using the USB cable plugged in you must use RS-232 - USB instead of a baud rate. Mode doesn't matter! Same is true for a K3 with the new KIO3 USB board .

And if you plug audio cables in the Lin In/Out jacks it disconnects the audio on the USB cable.

Sent from my iPhone
...nr4c. bill

> On Sep 5, 2017, at 5:21 PM, Gary Smith <[hidden email]> wrote:
>
> The topic has recently drifted a bit from
> my original question but the information
> given has been interesting. As I'm using a
> K3s and its internal sound card, I put
> away my Creative USB 0404 card, though it
> was a fine card to use with the K3.
>
> I have gotten WSJT running though I
> haven't yet scored a QSO, this means I
> probably have something not set quite
> right yet. I do have a question specific
> for the K3s, maybe K3; Do I have the K3s
> set in USB mode or in the data mode when
> using WSJT?
>
> And thank you to all who replied to my
> initial questions, I truly appreciate it.
>
> 73,
>
> Gary
> KA1J
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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Don Wilhelm

Re: OT - WSJT-X & K3s

In reply to this post by Gary Smith-2

Gary,

With any soundcard data mode, you should be in DATA A with MIC SEL set
to LINE IN. That includes WSJT.
When using the internal soundcard, make certain there is nothing
connected to the LINE IN jack - it takes precedence over the output of
the internal soundcard.

As always, set the audio level to show 4 bars solid on the ALC meter
with the 5th bar flashing (the WSJT instructions are not correct for the
K3/K3S). Adjust the power level with the POWER knob.

73,
Don W3FPR

On 9/5/2017 5:21 PM, Gary Smith wrote:

> The topic has recently drifted a bit from
> my original question but the information
> given has been interesting. As I'm using a
> K3s and its internal sound card, I put
> away my Creative USB 0404 card, though it
> was a fine card to use with the K3.
>
> I have gotten WSJT running though I
> haven't yet scored a QSO, this means I
> probably have something not set quite
> right yet. I do have a question specific
> for the K3s, maybe K3; Do I have the K3s
> set in USB mode or in the data mode when
> using WSJT?
>
> And thank you to all who replied to my
> initial questions, I truly appreciate it.
>
> 73,
>
> Gary
> KA1J
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

Lynn W. Taylor, WB6UUT-2

Re: OT - WSJT-X & K3s

In reply to this post by Nr4c

It's unfortunate that Universal Serial Bus and Upper Sideband share the
same three letter acronym.

On 9/5/2017 2:45 PM, Nr4c wrote:
> If you have a K3S and are using the USB cable plugged in you must use RS-232 - USB instead of a baud rate.
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Eric Swartz - WA6HHQ

Re: OT - WSJT-X & K3s

Administrator

In reply to this post by Nr4c

Folks - Let's close the WSJT-X thread(s), which are well over the single topic
posting limit. WAY over.. :-)

73,
Eric
Moderator (propagation must be bad today..)
/elecraft.com/

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Jim Brown-10

Re: OT - WSJT-X & K3s

In reply to this post by Joe Subich, W4TV-4

On 9/5/2017 1:21 PM, Joe Subich, W4TV wrote:
>
> You will find almost without fail, the common emitter transistor
> preamp with unbypassed emitter bias resistor is, in fact, clipping well
> below 1V.

Gee, I said 100 mV, which is 20 dB below 1 V.

> Remember, we're talking about *AMATEUR* equipment - not professional
> and broadcast equipment with its 1V or 4V P-P standard "Line" levels
> and wide range mic preamps that provided standard level outputs

I am well aware of the differences -- that was my profession for 50
years, and, among other things, I'm still on the AES Standards
Committee, which standardizes stuff like this! Indeed, consumer line
inputs (into which ham gear falls) typically clip around 1V. Nowadays,
pro line level equipment clips in the range of +18 to +24 dBu. That's a
lot more than 4V P-P.

> In any case, a typical dynamic microphone - professional or amateur -
> is rated around -55 dBV/Pascal (check Shure, EV, etc.) some may be a
> more sensitive, some less. For those who do not know, 1 Pascal is a
> 94 dB Sound Pressure Level (think traffic on a busy roadway) - nearly
> 25 dB above the EPA threshold for hearing protection! -55dBV is in
> *the millivolt range*. 5 mV is a decent level for normal conversation
> with a dynamic microphone within 6" of the lips.

I suggest that you drag out a scope and look at the output of some these
mics with speech with different people and different working distances.
The variables are distance and how loud the speech is. I know guys who
get pretty excited calling DX or during a contest. And sound pressure
level follows inverse square law, just like antennas. That means the
voltage doubles (+6dB) every time the distance between mic and mouth
drops by a factor of 2. 1-in to 2-in is 6 dB. 2-in to 4-in is 6 dB.
4-in to 8-in is 6 dB. And having ridden gain on a wide variety of
performers for 50 years, I can assure you that it is VERY common for
speech levels to vary by 20 dB in perfectly ordinary speech.
>
> All of this information is available from public sources and a little
> study.

I learned it more than 50 years ago. :)

73, Jim K9YC
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Neil Zampella

Re: OT - WSJT-X & K3s

In reply to this post by Nr4c

Easy fix .. but you should hear some of the audio being Tx along with
FT8 :(

Neil, KN3ILZ

On 9/5/2017 5:29 PM, Nr4c wrote:

> Go to the Mixer in Windows and MUTE Windows System sounds.
>
> Sent from my iPhone
> ...nr4c. bill
>
>
>> On Sep 5, 2017, at 12:32 PM, Neil Zampella <[hidden email]> wrote:
>>
>> If you're using your USB interface cable, such as the KXUSB for the KX3, there's no need to have VOX to trigger anything.
>> The only problem with VOX and the soundcard is if you have only one soundcard, and you also have Windows sounds going to it.
>>
>> Neil, KN3ILZ
>>
>>
>>> On 9/5/2017 8:39 AM, Wes Stewart wrote:
>>> As would VOX gain per mode.
>>>
>>>> On 9/4/2017 8:15 PM, Don Wilhelm wrote:
>>>> With digital modes, there is no problem of room noise activating the VOX. All the audio is coming from the soundcard.
>>>>
>>>> Yes, VOX per mode would be a great addition to the KX3/K3/K3S firmware.
>>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>> Post: mailto:[hidden email]
>>
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>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>
>
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>

Nr4c

Re: OT - WSJT-X & K3s

In reply to this post by Lynn W. Taylor, WB6UUT-2

And your point?

Sent from my iPhone
...nr4c. bill

> On Sep 5, 2017, at 5:53 PM, Lynn W. Taylor, WB6UUT <[hidden email]> wrote:
>
> It's unfortunate that Universal Serial Bus and Upper Sideband share the same three letter acronym.
>
>> On 9/5/2017 2:45 PM, Nr4c wrote:
>> If you have a K3S and are using the USB cable plugged in you must use RS-232 - USB instead of a baud rate.
> ______________________________________________________________
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