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K3s & P3 used with Data

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WB4SON

K3s & P3 used with Data

I've been using my K3 & K3s for years using the DATA mode. It has worked
as if it were in the USB mode, and shows on the P3 scope to the right of
the dial frequency just like a USB signal would.

Today I tried 60 meters for the first time. I could pick up signals and
decode them just fine in USB mode, and the P3 showed the signals to the
right of the dial frequency as expected. However, when I shifted the radio
into DATA mode, the P3 seemed to shift as if it was showing a double
sideband signal (half below the suppressed carrier and half above). At
this point, when in DATA mode, nothing would decode until I selected REV
DATA. The result of that was that calculated frequencies were wrong
(appearing that signals were significantly outside the US channel limit.

Am I missing some setting, or is there something unique about how the DATA
mode works on 60 meters?

73, Bob, WB4SON
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73, Bob, WB4SON

Bob McGraw - K4TAX

Re: K3s & P3 used with Data

That is normal to comply with the 60M frequency and BW allowed.

73
Bob, K4TAX

Sent from my iPhone

> On Jan 31, 2019, at 5:15 PM, Bob <[hidden email]> wrote:
>
> I've been using my K3 & K3s for years using the DATA mode. It has worked
> as if it were in the USB mode, and shows on the P3 scope to the right of
> the dial frequency just like a USB signal would.
>
> Today I tried 60 meters for the first time. I could pick up signals and
> decode them just fine in USB mode, and the P3 showed the signals to the
> right of the dial frequency as expected. However, when I shifted the radio
> into DATA mode, the P3 seemed to shift as if it was showing a double
> sideband signal (half below the suppressed carrier and half above). At
> this point, when in DATA mode, nothing would decode until I selected REV
> DATA. The result of that was that calculated frequencies were wrong
> (appearing that signals were significantly outside the US channel limit.
>
> Am I missing some setting, or is there something unique about how the DATA
> mode works on 60 meters?
>
> 73, Bob, WB4SON
> ______________________________________________________________
> 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
> Message delivered to [hidden email]
>

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WB4SON

Re: K3s & P3 used with Data

Interesting...

Guess I am having trouble wrapping my mind around it. The bandwidth of the
channel is supposed to be 2.4 KHz. But the implication on the P3 scope is
that it is an AM signal -- 1.2 KHz below the carrier and 1.2 KHz above the
carrier. That's not enough bandwidth for a SSB signal. Maybe the scope is
centered so that it is 2.4 KHz above the carrier and 2.4 KHz below. That
might make sense (although it would imply a 4.8 KHz wide AM/DSB signal).

No matter what the scope says, I don't understand why it has to be put into
DATA REV in order to decode signals obviously sent as USB.

Glad to know something isn't broken, but I don't understand the DATA REV
bit.

73, Bob

On Thu, Jan 31, 2019 at 6:20 PM Bob McGraw K4TAX <[hidden email]>
wrote:

> That is normal to comply with the 60M frequency and BW allowed.
>
> 73
> Bob, K4TAX
>
>
> Sent from my iPhone
>
> > On Jan 31, 2019, at 5:15 PM, Bob <[hidden email]> wrote:
> >
> > I've been using my K3 & K3s for years using the DATA mode. It has worked
> > as if it were in the USB mode, and shows on the P3 scope to the right of
> > the dial frequency just like a USB signal would.
> >
> > Today I tried 60 meters for the first time. I could pick up signals and
> > decode them just fine in USB mode, and the P3 showed the signals to the
> > right of the dial frequency as expected. However, when I shifted the
> radio
> > into DATA mode, the P3 seemed to shift as if it was showing a double
> > sideband signal (half below the suppressed carrier and half above). At
> > this point, when in DATA mode, nothing would decode until I selected REV
> > DATA. The result of that was that calculated frequencies were wrong
> > (appearing that signals were significantly outside the US channel limit.
> >
> > Am I missing some setting, or is there something unique about how the
> DATA
> > mode works on 60 meters?
> >
> > 73, Bob, WB4SON
> > ______________________________________________________________
> > 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
> > Message delivered to [hidden email]
> >
>
>

73, Bob, WB4SON

Jim Brown-10

Re: K3s & P3 used with Data

It does NOT, and DATA A (USB) MUST be used, NOT in REV mode. Among other
things, WSJT modes won't decode if the signal is reversed. Detailed
instructions from ARRL for data modes on 60M are at the link below. FT8
operation should do the same as described for PSK31 -- set the TX
frequency for 1500Hz.

http://www.arrl.org/60m-channel-allocation

I don't work 60M, but it's my understanding that frequency allocations
on this band vary from one country to another, so it may be necessary to
work split.

73, Jim K9YC

On 1/31/2019 3:29 PM, Bob wrote:
> No matter what the scope says, I don't understand why it has to be put into
> DATA REV in order to decode signals obviously sent as USB.

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Bob McGraw - K4TAX

Re: K3s & P3 used with Data

Yes and as Jim wrote, band allocations vary from one country to
another. For this reason the 60M frequencies are not included in the
standard FREQUENCY Table in WSJT-X. Therefore, one must manually enter
the frequencies in the Frequency table. Just right click anywhere in
the table and a second menu will appear. Select INSERT and enter the
frequency in empty box and say OK. It will then appear in the
Band/frequency selection on the operating pane of WSJT-X.

73

Bob, K4TAX

On 1/31/2019 5:55 PM, Jim Brown wrote:
> I don't work 60M, but it's my understanding that frequency allocations
> on this band vary from one country to another, so it may be necessary
> to work split.
>
> 73, Jim K9YC

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Nr4c

Re: K3s & P3 used with Data

In reply to this post by WB4SON

Which DATA sub-mode were you using. There are two USB and two LSB sub-modes.

Sent from my iPhone
...nr4c. bill

> On Jan 31, 2019, at 6:15 PM, Bob <[hidden email]> wrote:
>
> I've been using my K3 & K3s for years using the DATA mode. It has worked
> as if it were in the USB mode, and shows on the P3 scope to the right of
> the dial frequency just like a USB signal would.
>
> Today I tried 60 meters for the first time. I could pick up signals and
> decode them just fine in USB mode, and the P3 showed the signals to the
> right of the dial frequency as expected. However, when I shifted the radio
> into DATA mode, the P3 seemed to shift as if it was showing a double
> sideband signal (half below the suppressed carrier and half above). At
> this point, when in DATA mode, nothing would decode until I selected REV
> DATA. The result of that was that calculated frequencies were wrong
> (appearing that signals were significantly outside the US channel limit.
>
> Am I missing some setting, or is there something unique about how the DATA
> mode works on 60 meters?
>
> 73, Bob, WB4SON
> ______________________________________________________________
> 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
> Message delivered to [hidden email]

WB4SON

Re: K3s & P3 used with Data

Both Bob K4TAX and Bill NR4C figured out the problem...

I've been using my K3s for a few years on all bands except 60 meters. So my
original setup was from a long time ago. At that time I set all my active
bands to DATA MD DATA A. When I tried 60 meters for the first time
yesterday to help someone who needed RI for their WAS, I didn't think to
check DATA MD on the 60 meter band. I suspect it defaults to AFSK, which
is a LSB mode.

So moral of the story -- if you have to be in REV DATA you probably haven't
set the DATA MD to DATA A

73, Bob, WB4SON

On Thu, Jan 31, 2019 at 9:16 PM Nr4c <[hidden email]> wrote:

> Which DATA sub-mode were you using. There are two USB and two LSB
> sub-modes.
>
> Sent from my iPhone
> ...nr4c. bill
>
>
> > On Jan 31, 2019, at 6:15 PM, Bob <[hidden email]> wrote:
> >
> > I've been using my K3 & K3s for years using the DATA mode. It has worked
> > as if it were in the USB mode, and shows on the P3 scope to the right of
> > the dial frequency just like a USB signal would.
> >
> > Today I tried 60 meters for the first time. I could pick up signals and
> > decode them just fine in USB mode, and the P3 showed the signals to the
> > right of the dial frequency as expected. However, when I shifted the
> radio
> > into DATA mode, the P3 seemed to shift as if it was showing a double
> > sideband signal (half below the suppressed carrier and half above). At
> > this point, when in DATA mode, nothing would decode until I selected REV
> > DATA. The result of that was that calculated frequencies were wrong
> > (appearing that signals were significantly outside the US channel limit.
> >
> > Am I missing some setting, or is there something unique about how the
> DATA
> > mode works on 60 meters?
> >
> > 73, Bob, WB4SON
> > ______________________________________________________________
> > 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
> > Message delivered to [hidden email]
>

73, Bob, WB4SON

Bob McGraw - K4TAX

Re: K3s & P3 used with Data

Thanks and always glad to assist. And glad you have the issue resolved.

73

Bob, K4TAX

On 2/1/2019 9:22 AM, Bob wrote:

> Both Bob K4TAX and Bill NR4C figured out the problem...
>
> I've been using my K3s for a few years on all bands except 60 meters. So my
> original setup was from a long time ago. At that time I set all my active
> bands to DATA MD DATA A. When I tried 60 meters for the first time
> yesterday to help someone who needed RI for their WAS, I didn't think to
> check DATA MD on the 60 meter band. I suspect it defaults to AFSK, which
> is a LSB mode.
>
> So moral of the story -- if you have to be in REV DATA you probably haven't
> set the DATA MD to DATA A
>
> 73, Bob, WB4SON
>
> On Thu, Jan 31, 2019 at 9:16 PM Nr4c <[hidden email]> wrote:
>
>> Which DATA sub-mode were you using. There are two USB and two LSB
>> sub-modes.
>>
>> Sent from my iPhone
>> ...nr4c. bill
>>
>>
>>> On Jan 31, 2019, at 6:15 PM, Bob <[hidden email]> wrote:
>>>
>>> I've been using my K3 & K3s for years using the DATA mode. It has worked
>>> as if it were in the USB mode, and shows on the P3 scope to the right of
>>> the dial frequency just like a USB signal would.
>>>
>>> Today I tried 60 meters for the first time. I could pick up signals and
>>> decode them just fine in USB mode, and the P3 showed the signals to the
>>> right of the dial frequency as expected. However, when I shifted the
>> radio
>>> into DATA mode, the P3 seemed to shift as if it was showing a double
>>> sideband signal (half below the suppressed carrier and half above). At
>>> this point, when in DATA mode, nothing would decode until I selected REV
>>> DATA. The result of that was that calculated frequencies were wrong
>>> (appearing that signals were significantly outside the US channel limit.
>>>
>>> Am I missing some setting, or is there something unique about how the
>> DATA
>>> mode works on 60 meters?
>>>
>>> 73, Bob, WB4SON
>>> ______________________________________________________________
>>> 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
>>> Message delivered to [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
> Message delivered to [hidden email]
>

Nr4c

Re: K3s & P3 used with Data

Glad to be of service.

Sent from my iPhone
...nr4c. bill

> On Feb 1, 2019, at 10:39 AM, Bob McGraw K4TAX <[hidden email]> wrote:
>
> Thanks and always glad to assist. And glad you have the issue resolved.
>
> 73
>
> Bob, K4TAX
>
>> On 2/1/2019 9:22 AM, Bob wrote:
>> Both Bob K4TAX and Bill NR4C figured out the problem...
>>
>> I've been using my K3s for a few years on all bands except 60 meters. So my
>> original setup was from a long time ago. At that time I set all my active
>> bands to DATA MD DATA A. When I tried 60 meters for the first time
>> yesterday to help someone who needed RI for their WAS, I didn't think to
>> check DATA MD on the 60 meter band. I suspect it defaults to AFSK, which
>> is a LSB mode.
>>
>> So moral of the story -- if you have to be in REV DATA you probably haven't
>> set the DATA MD to DATA A
>>
>> 73, Bob, WB4SON
>>
>>> On Thu, Jan 31, 2019 at 9:16 PM Nr4c <[hidden email]> wrote:
>>>
>>> Which DATA sub-mode were you using. There are two USB and two LSB
>>> sub-modes.
>>>
>>> Sent from my iPhone
>>> ...nr4c. bill
>>>
>>>
>>>> On Jan 31, 2019, at 6:15 PM, Bob <[hidden email]> wrote:
>>>>
>>>> I've been using my K3 & K3s for years using the DATA mode. It has worked
>>>> as if it were in the USB mode, and shows on the P3 scope to the right of
>>>> the dial frequency just like a USB signal would.
>>>>
>>>> Today I tried 60 meters for the first time. I could pick up signals and
>>>> decode them just fine in USB mode, and the P3 showed the signals to the
>>>> right of the dial frequency as expected. However, when I shifted the
>>> radio
>>>> into DATA mode, the P3 seemed to shift as if it was showing a double
>>>> sideband signal (half below the suppressed carrier and half above). At
>>>> this point, when in DATA mode, nothing would decode until I selected REV
>>>> DATA. The result of that was that calculated frequencies were wrong
>>>> (appearing that signals were significantly outside the US channel limit.
>>>>
>>>> Am I missing some setting, or is there something unique about how the
>>> DATA
>>>> mode works on 60 meters?
>>>>
>>>> 73, Bob, WB4SON
>>>> ______________________________________________________________
>>>> 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
>>>> Message delivered to [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
>> Message delivered to [hidden email]
>>
>
> ______________________________________________________________
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>
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