Elecraft

Using the k3 for WSPR

Classic

List

Threaded

10 messages Options

VE3WDM

Using the k3 for WSPR

When using WSPR the TX and RX frequencies are not the same....for example on 30m the RX is 10.138700 and the TX is 10.140200. For those of you using the K3 does your read out on the K3 change to the TX freq then the rig goes into transmit? Mine is not and not sure if this is normal or if I have to set something to show this.
Thanks
Mike
VE3WDM

______________________________________________________________
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

EricJ-2

Re: Using the k3 for WSPR

I don't have a K3, but I operate JT9 and JT65 with a K2. If youuse the
K3 in USB mode, then it works the same way as it does for the K2. By
convention, the subbands are specified as VFO frequencyon USB. On30
meters. the subband is 10.130. You just leave the VFO (receive) on that
frequency. When the software modulates the signal in transmit, tones are
produced based on the VFO frequency. The transmit frequency doesn't
change per se. But the modulation causes sidebands to be generated above
the VFO frequency which are the WSPR mode tones. Everything is based on
the VFO frequency. In fact, under rig control like HRD or omni-rig, the
WSPR software presets your rig to the convention-defined subband VFO
frequency.

Eric
KE6US

On 9/1/2013 11:32 AM, Mike Weir wrote:

> When using WSPR the TX and RX frequencies are not the same....for example on 30m the RX is 10.138700 and the TX is 10.140200. For those of you using the K3 does your read out on the K3 change to the TX freq then the rig goes into transmit? Mine is not and not sure if this is normal or if I have to set something to show this.
> Thanks
> Mike
> VE3WDM
>
> ______________________________________________________________
> 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]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

DL6OAP

Re: Using the k3 for WSPR

In reply to this post by VE3WDM

Hi Mike,

I have no K3, but my understanding is that the 10138.7 is the frequency of the suppressed carrier and that 10140.2 means that you set your rig to 10138.7 kHz USB and feed audio at about 1.5 kHz, resulting in TX at 10140.2.

So, the QRG reading should not change.

Greetings

Ralf

DL6OAP

Am 01.09.2013 um 20:32 schrieb Mike Weir <[hidden email]>:

Richard Ferch

Re: Using the k3 for WSPR

In reply to this post by VE3WDM

Mike,

In SPLIT mode the K3's frequency display does not change between
transmit and receive. The main receiver's frequency is always shown in
the upper (larger) display, and in SPLIT mode the lower display always
shows your transmit frequency. So if you want to know what frequency you
are transmitting on, you have to first check whether you are in SPLIT
mode or not before deciding which part of the display to look at.

If you were using RIT or XIT instead of SPLIT mode as your method of
adjusting TX and RX frequencies separately, then the frequency shown in
the upper display would change between transmit and receive.

I don't know which method your software uses, but it sounds as if it's
putting the K3 into SPLIT mode.

73,
Rich VE3KI

VE3WDM wrote:

> When using WSPR the TX and RX frequencies are not the same....for example
on 30m the RX is 10.138700 and the TX is 10.140200. For those of you using
the K3 does your read out on the K3 change to the TX freq then the rig goes
into transmit? Mine is not and not sure if this is normal or if I have to
set something to show this.
______________________________________________________________
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

Richard Ferch

Re: Using the k3 for WSPR

Oops! I missed the fact that the different frequencies in WSPR are
because of the audio offset - I imagine it is not using either of SPLIT
or RIT/XIT. My mind was set on split because of the earlier posts about
WSJT-X. I believe my previous post was correct, but it is probably
irrelevant to WSPR.

73,
Rich VE3KI

On 2013-09-01 3:56 PM, Richard Ferch wrote:

> Mike,
>
> In SPLIT mode the K3's frequency display does not change between
> transmit and receive. The main receiver's frequency is always shown in
> the upper (larger) display, and in SPLIT mode the lower display always
> shows your transmit frequency. So if you want to know what frequency you
> are transmitting on, you have to first check whether you are in SPLIT
> mode or not before deciding which part of the display to look at.
>
> If you were using RIT or XIT instead of SPLIT mode as your method of
> adjusting TX and RX frequencies separately, then the frequency shown in
> the upper display would change between transmit and receive.
>
> I don't know which method your software uses, but it sounds as if it's
> putting the K3 into SPLIT mode.
>
> 73,
> Rich VE3KI
>
>
> VE3WDM wrote:
>
>> When using WSPR the TX and RX frequencies are not the same....for example
> on 30m the RX is 10.138700 and the TX is 10.140200. For those of you using
> the K3 does your read out on the K3 change to the TX freq then the rig goes
> into transmit? Mine is not and not sure if this is normal or if I have to
> set something to show this.

EricJ-2

Re: Using the k3 for WSPR

Yea, it's not relevant to WSPR. The WSPR modes are just USB SSB
modulated by audio tones. By convention, the VFO frequency is set to the
bottom edge of the WSPR subband, and your transmit frequency is set by
the frequency of the audio tone. So everyone is tuned to the same
frequency and occupy a portion of the same 2 khz upper sideband.

BTW, WSPR is the only mode I have ever used where I was able to work the
inventor! I kind of missed out on Mr. Vail and Mr. Morse, and doubt they
every were on the air at all. Likewise, Inever met the inventors of AM
or SSB. But K1JT appears relatively often on 20m JT65 and JT9.

Eric
KE6US

On 9/1/2013 1:02 PM, Richard Ferch wrote:

> Oops! I missed the fact that the different frequencies in WSPR are
> because of the audio offset - I imagine it is not using either of
> SPLIT or RIT/XIT. My mind was set on split because of the earlier
> posts about WSJT-X. I believe my previous post was correct, but it is
> probably irrelevant to WSPR.
>
> 73,
> Rich VE3KI
>
>
> On 2013-09-01 3:56 PM, Richard Ferch wrote:
>> Mike,
>>
>> In SPLIT mode the K3's frequency display does not change between
>> transmit and receive. The main receiver's frequency is always shown in
>> the upper (larger) display, and in SPLIT mode the lower display always
>> shows your transmit frequency. So if you want to know what frequency you
>> are transmitting on, you have to first check whether you are in SPLIT
>> mode or not before deciding which part of the display to look at.
>>
>> If you were using RIT or XIT instead of SPLIT mode as your method of
>> adjusting TX and RX frequencies separately, then the frequency shown in
>> the upper display would change between transmit and receive.
>>
>> I don't know which method your software uses, but it sounds as if it's
>> putting the K3 into SPLIT mode.
>>
>> 73,
>> Rich VE3KI
>>
>>
>> VE3WDM wrote:
>>
>>> When using WSPR the TX and RX frequencies are not the same....for
>>> example
>> on 30m the RX is 10.138700 and the TX is 10.140200. For those of you
>> using
>> the K3 does your read out on the K3 change to the TX freq then the
>> rig goes
>> into transmit? Mine is not and not sure if this is normal or if I
>> have to
>> set something to show this.
> ______________________________________________________________
> 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
>
>

Tony Estep

Re: Using the k3 for WSPR

On Sun, Sep 1, 2013 at 7:31 PM, EricJ <[hidden email]> wrote:

> ...The WSPR modes are just USB SSB modulated by audio tones....

==============
Correct. The TX frequency is not 10.14020 unless you set it to be that. The
TX frequency is set by typing it into a window on the WSPR control panel.
Try typing in a number, and see the red TX freq line move. What is shown as
the "RX Freq" is the bottom of the USB passband, not the "receive
frequency". The freq of each received signal is shown on the WSPR panel.
Five minutes spent reading the docs and/or trying it out will make it very
clear. The freq of each received signal can also be read by clicking on its
trace on the bandmap.

Tony KT0NY
______________________________________________________________
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

VE3WDM

Re: Using the k3 for WSPR

In reply to this post by VE3WDM

Thanks very much for all your input and personal emails....the fog has cleared and it makes sense to me now.
Mike
VE3WDM

drewko

Re: Using the k3 for WSPR

In reply to this post by VE3WDM

Mike,

That is normal. Tthe readout on you K3 VFO will not change on trasmit.
Just set VFO-A to the 10.138700 "Dial" frequency (for 30m) which is
shown in the Dial box of the WSPR program. Do not engage SPLIT or XIT
on your K3.

You didn't ask but one thing you should take care to set up properly
is your power output. Click the Tune button in the WSPR program and
read the K3's power meter (or external wattmeter). Then enter this
same value into the Station Parameters setting in the WSPR program.
The program does NOT control your K3's power output, or even know what
it is, so you to manually enter the correct value there in order for
it to be reported correctly to receiving stations.

73,
Drew
AF2Z

On Sun, 01 Sep 2013 14:32:37 -0400, you wrote:

>When using WSPR the TX and RX frequencies are not the same....for example on 30m the RX is 10.138700 and the TX is 10.140200. For those of you using the K3 does your read out on the K3 change to the TX freq then the rig goes into transmit? Mine is not and not sure if this is normal or if I have to set something to show this.
>Thanks
>Mike
>VE3WDM
>

______________________________________________________________
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

drewko

Re: Using the k3 for WSPR

In reply to this post by EricJ-2

WSPRnet is also a great tool for comparing antennas. I set up some
batch files in Windows to switch my K3's ANT switch every 15 minutes
(during the brief WSPR no-trasmit intervals only!). After a couple
thousand "QSOs" you can get a pretty good idea how the two antennas
compare, both on receive and transmit.

73,
Drew
AF2Z

On Sun, 01 Sep 2013 17:31:45 -0700, you wrote:

>
>BTW, WSPR is the only mode I have ever used where I was able to work the
>inventor! I kind of missed out on Mr. Vail and Mr. Morse, and doubt they
>every were on the air at all. Likewise, Inever met the inventors of AM
>or SSB. But K1JT appears relatively often on 20m JT65 and JT9.
>
>Eric
>KE6US
>

______________________________________________________________
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