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WJST and the K3

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Edward R Cole

WJST and the K3

Bill, W5WVO gave a very detailed reply.

I would like to say the K3 requires no interface for digital modes.
Just run two audio patch cords (you can buy then at RS) from the
speaker and mic jacks on the computer soundcard to the LINE-IN and
LINE-OUT jacks on the KVX3 panel. All the audio interfacing is done
by the K3. Run a standard serial cable (RS-232) cable from the
computer to the K3. In the WSJT sw open OPTIONS under the SETUP tab
and enter your station info and chose PTT Port 1. In the K3 change
your mode to DATA. That's it! I leave my mic and compression set
for voice and adjust audio at the computer.

You will have to adjust audio levels in the computer using the audio
dialog box (I right-click on the speaker icon at the lower bottom of
the screen to open this).
Chose OPEN VOLUME CONTROL and PLAYBACK to set transmit levels with
the WAVE slider control. Back to WSJT, Click OPEN TEST MESSAGES
under the SETUP tab. You will see several windows marked TX1, TX2,
etc. Just click one to place the transmitter into TX and adjust the
slider until you just reach full power out. You can click the others
if you are curious but TX1 usually is all that you need for adjusting
transmit audio.

Click options on the volume window to select PROPERTIES and RECORD to
gain access to the speaker control to set the level for the
Spectra-JT display window.
You really should read the WSJT instruction available from the WSJT
website. He gives detailed instructions for set up there.

For other soundcard programs follow their instructions for setup.

The K3 is ready to use for digital on the DATA mode and no extra
interface is needed. Way to go Elecraft!

73, Ed - KL7UW
------------------------------

Message: 9
Date: Fri, 2 Jul 2010 10:14:38 -0700 (PDT)
From: Lee Buller <[hidden email]>
Subject: [Elecraft] WJST and the K3
To: Elecraft Reflector <[hidden email]>
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=us-ascii

OK.... I got the 6 meter bug...as you all know by now....

I have been trying to set up WJST for the K3. Can anyone send me
some information as to how to do this? I am under the impression
that it needs to be on SSB - but can't find information on which
sideband. How do you key the rig on SSB, it does not want to do so
because I think it wants to see DATA.

I have a SignaLink USB - works great on RTTY and PSK...but seems to
not want to deal with WJST. I've RTFM several times but am
lost. Anyone can give me a hint...a web page to read (I've read a
lot of them today)..or something...

I am missing something somewhere. Who is the expert I can
communicate off the list!

Lee K0WA

73, Ed - KL7UW, WD2XSH/45
======================================
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
EME: 144-600w, 432-100w, 1296-60w, 3400-fall 2010
DUBUS Magazine USA Rep [hidden email]
======================================

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W8JI

Re: WJST and the K3

So the K3 has a fully floating ground on the line audio input, isolated from
the chassis??? Is that correct?

73 Tom

----- Original Message -----
From: "Edward R Cole" <[hidden email]>
To: <[hidden email]>
Sent: Saturday, July 03, 2010 4:08 AM
Subject: [Elecraft] WJST and the K3

> Bill, W5WVO gave a very detailed reply.
>
> I would like to say the K3 requires no interface for digital modes.
> Just run two audio patch cords (you can buy then at RS) from the
> speaker and mic jacks on the computer soundcard to the LINE-IN and
> LINE-OUT jacks on the KVX3 panel. All the audio interfacing is done
> by the K3. Run a standard serial cable (RS-232) cable from the
> computer to the K3. In the WSJT sw open OPTIONS under the SETUP tab
> and enter your station info and chose PTT Port 1. In the K3 change
> your mode to DATA. That's it! I leave my mic and compression set
> for voice and adjust audio at the computer.
>
> You will have to adjust audio levels in the computer using the audio
> dialog box (I right-click on the speaker icon at the lower bottom of
> the screen to open this).
> Chose OPEN VOLUME CONTROL and PLAYBACK to set transmit levels with
> the WAVE slider control. Back to WSJT, Click OPEN TEST MESSAGES
> under the SETUP tab. You will see several windows marked TX1, TX2,
> etc. Just click one to place the transmitter into TX and adjust the
> slider until you just reach full power out. You can click the others
> if you are curious but TX1 usually is all that you need for adjusting
> transmit audio.
>
> Click options on the volume window to select PROPERTIES and RECORD to
> gain access to the speaker control to set the level for the
> Spectra-JT display window.
> You really should read the WSJT instruction available from the WSJT
> website. He gives detailed instructions for set up there.
>
> For other soundcard programs follow their instructions for setup.
>
> The K3 is ready to use for digital on the DATA mode and no extra
> interface is needed. Way to go Elecraft!
>
> 73, Ed - KL7UW
> ------------------------------
>
> Message: 9
> Date: Fri, 2 Jul 2010 10:14:38 -0700 (PDT)
> From: Lee Buller <[hidden email]>
> Subject: [Elecraft] WJST and the K3
> To: Elecraft Reflector <[hidden email]>
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset=us-ascii
>
>
> OK.... I got the 6 meter bug...as you all know by now....
>
> I have been trying to set up WJST for the K3. Can anyone send me
> some information as to how to do this? I am under the impression
> that it needs to be on SSB - but can't find information on which
> sideband. How do you key the rig on SSB, it does not want to do so
> because I think it wants to see DATA.
>
> I have a SignaLink USB - works great on RTTY and PSK...but seems to
> not want to deal with WJST. I've RTFM several times but am
> lost. Anyone can give me a hint...a web page to read (I've read a
> lot of them today)..or something...
>
> I am missing something somewhere. Who is the expert I can
> communicate off the list!
>
> Lee K0WA
>
>
>
> 73, Ed - KL7UW, WD2XSH/45
> ======================================
> BP40IQ 500 KHz - 10-GHz www.kl7uw.com
> EME: 144-600w, 432-100w, 1296-60w, 3400-fall 2010
> DUBUS Magazine USA Rep [hidden email]
> ======================================
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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P.B. Christensen

Re: WJST and the K3

> So the K3 has a fully floating ground on the line audio input, isolated
> from
> the chassis??? Is that correct? 73 Tom

The K3's line input transformer primary is connected to the 1/8" TRS jack
using tip and sleeve where the sleeve floats above chassis ground.

The on-line schematic of the KIO3 board was revised a few weeks ago and it
looks like the Bourns LM-NP-1001 transformer may now be an alternative from
Elecraft although I haven't looked at pin compatibility with the existing
Tamura TTC-108 transformers.

According to Jack Smith's measurements, the Bourns transformers have very
good frequency response and THD characteristics as long as input levels
remain at typical -10 dBV from consumer-grade PC sound cards. At just USD
$1.75 ea. from Mouser, they look like a good value.

Paul, W9AC

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Pete Smith N4ZR

Re: WJST and the K3

My recent K3 has Bournes transformers on the KIO3A board.

73, Pete N4ZR

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On 7/3/2010 7:48 AM, Paul Christensen wrote:

>> So the K3 has a fully floating ground on the line audio input, isolated
>> from
>> the chassis??? Is that correct? 73 Tom
>>
> The K3's line input transformer primary is connected to the 1/8" TRS jack
> using tip and sleeve where the sleeve floats above chassis ground.
>
> The on-line schematic of the KIO3 board was revised a few weeks ago and it
> looks like the Bourns LM-NP-1001 transformer may now be an alternative from
> Elecraft although I haven't looked at pin compatibility with the existing
> Tamura TTC-108 transformers.
>
> According to Jack Smith's measurements, the Bourns transformers have very
> good frequency response and THD characteristics as long as input levels
> remain at typical -10 dBV from consumer-grade PC sound cards. At just USD
> $1.75 ea. from Mouser, they look like a good value.
>
> Paul, W9AC
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>
>

Brett Howard

Re: WJST and the K3

In reply to this post by P.B. Christensen

Doesn't look like it'll fit... Where as the Tamura has 3 possible pins
on a side at .01 spacing the Bourns part has 4 possible pin locations
per side at the same .01 spacing... So they aren't going to be pretty
drop in replacements.'

~Brett (N7MG)

On Sat, Jul 3, 2010 at 4:48 AM, Paul Christensen <[hidden email]> wrote:

>> So the K3 has a fully floating ground on the line audio input, isolated
>> from
>> the chassis??? Is that correct? 73 Tom
>
> The K3's line input transformer primary is connected to the 1/8" TRS jack
> using tip and sleeve where the sleeve floats above chassis ground.
>
> The on-line schematic of the KIO3 board was revised a few weeks ago and it
> looks like the Bourns LM-NP-1001 transformer may now be an alternative from
> Elecraft although I haven't looked at pin compatibility with the existing
> Tamura TTC-108 transformers.
>
> According to Jack Smith's measurements, the Bourns transformers have very
> good frequency response and THD characteristics as long as input levels
> remain at typical -10 dBV from consumer-grade PC sound cards. At just USD
> $1.75 ea. from Mouser, they look like a good value.
>
> Paul, W9AC
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>