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Offset when in SSB+CW on a KX2

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Bob Liesen

Offset when in SSB+CW on a KX2

Hi gang,
Still learning about my KX2. One thing I think I screwed up while
struggling with getting digital mode A set up is the offset when running
SSB+CW mode. I like setting the radio to USB on 20m for instance, and then
using a key for TX. I like the wider RX bandwidth offered in USB on RX.
However, now when I tune in a CW station, and call him, it seems I am
quite a ways off his RX frequency. Any thoughts?

Tnx!
Bob WB0POQ
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Julia Tuttle

Re: Offset when in SSB+CW on a KX2

Yeah, that will happen.

In CW mode, the rig "lines up" the VFO frequency and your sidetone.

In USB mode, the rig uses the VFO frequency as the "edge" of the sideband,
and if you hear or send at your sidetone, you'll have to add that to the
VFO frequency to get the actual frequency of the CW signal. If you tune the
other station to match your sidetone and then call her, you *should* still
end up coming back on the same frequency -- it just won't be what's on your
screen.

If you want to make the math easier, you could set your sidetone to 500 Hz.
You might also try CW mode with the filter wide open, but it still tops out
at 2800 Hz instead of 4000 Hz, so it might not be wide enough for your
taste.

On Sat, Mar 6, 2021 at 12:37 PM Bob Liesen <[hidden email]> wrote:

> Hi gang,
> Still learning about my KX2. One thing I think I screwed up while
> struggling with getting digital mode A set up is the offset when running
> SSB+CW mode. I like setting the radio to USB on 20m for instance, and then
> using a key for TX. I like the wider RX bandwidth offered in USB on RX.
> However, now when I tune in a CW station, and call him, it seems I am
> quite a ways off his RX frequency. Any thoughts?
>
> Tnx!
> Bob WB0POQ
> ______________________________________________________________
> 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
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Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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Julia Tuttle

Re: Offset when in SSB+CW on a KX2

You're right -- the CW-in-SSB offset *is* the sidetone, which can be set
with PITCH. There's no separate setting, and also no way to turn it off.

If you're curious what you're putting out on the air, you may be able to
find a nearby kiwisdr to monitor your signal at http://rx.linkfanel.net/.

On Sat, Mar 6, 2021 at 1:08 PM Bob Liesen <[hidden email]> wrote:

> Julia,
> Thanks for the quick response. So is there an operator adjustable
> setting that controls the TX RF frequency when I close the key when in USB
> mode? At first I thought the "pitch" menu setting was it, but now I'm not
> so sure. Tooooooo many menus!! 😃😨
> Bob WB0POQ
>
> On Sat, Mar 6, 2021 at 11:52 AM Julia Tuttle <[hidden email]>
> wrote:
>
>> Yeah, that will happen.
>>
>> In CW mode, the rig "lines up" the VFO frequency and your sidetone.
>>
>> In USB mode, the rig uses the VFO frequency as the "edge" of the
>> sideband, and if you hear or send at your sidetone, you'll have to add that
>> to the VFO frequency to get the actual frequency of the CW signal. If you
>> tune the other station to match your sidetone and then call her, you
>> *should* still end up coming back on the same frequency -- it just won't be
>> what's on your screen.
>>
>> If you want to make the math easier, you could set your sidetone to 500
>> Hz. You might also try CW mode with the filter wide open, but it still tops
>> out at 2800 Hz instead of 4000 Hz, so it might not be wide enough for your
>> taste.
>>
>> On Sat, Mar 6, 2021 at 12:37 PM Bob Liesen <[hidden email]> wrote:
>>
>>> Hi gang,
>>> Still learning about my KX2. One thing I think I screwed up while
>>> struggling with getting digital mode A set up is the offset when running
>>> SSB+CW mode. I like setting the radio to USB on 20m for instance, and
>>> then
>>> using a key for TX. I like the wider RX bandwidth offered in USB on RX.
>>> However, now when I tune in a CW station, and call him, it seems I am
>>> quite a ways off his RX frequency. Any thoughts?
>>>
>>> Tnx!
>>> Bob WB0POQ
>>> ______________________________________________________________
>>> 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]
>>>
>>

Julia Tuttle

Re: Offset when in SSB+CW on a KX2

Nope, it just lets you tune VFO A in coarse steps, even if the VFO A knob
is set to 1 or 10 Hz steps.

On Sun, Mar 7, 2021, 10:12 Bob Liesen <[hidden email]> wrote:

> Julia,
> It appears you have a good understanding of this little rig. One thing
> I have looked for is an explanation of what the knob labeled "9" does when
> the OFS light is lit. It appears to do the same as the main tuning knob,
> but I suspect it is more than that.
>
> Thanks!
> Bob
>
> On Sat, Mar 6, 2021 at 12:18 PM Julia Tuttle <[hidden email]>
> wrote:
>
>> You're right -- the CW-in-SSB offset *is* the sidetone, which can be set
>> with PITCH. There's no separate setting, and also no way to turn it off.
>>
>> If you're curious what you're putting out on the air, you may be able to
>> find a nearby kiwisdr to monitor your signal at http://rx.linkfanel.net/.
>>
>> On Sat, Mar 6, 2021 at 1:08 PM Bob Liesen <[hidden email]> wrote:
>>
>>> Julia,
>>> Thanks for the quick response. So is there an operator adjustable
>>> setting that controls the TX RF frequency when I close the key when in USB
>>> mode? At first I thought the "pitch" menu setting was it, but now I'm not
>>> so sure. Tooooooo many menus!! 😃😨
>>> Bob WB0POQ
>>>
>>> On Sat, Mar 6, 2021 at 11:52 AM Julia Tuttle <[hidden email]>
>>> wrote:
>>>
>>>> Yeah, that will happen.
>>>>
>>>> In CW mode, the rig "lines up" the VFO frequency and your sidetone.
>>>>
>>>> In USB mode, the rig uses the VFO frequency as the "edge" of the
>>>> sideband, and if you hear or send at your sidetone, you'll have to add that
>>>> to the VFO frequency to get the actual frequency of the CW signal. If you
>>>> tune the other station to match your sidetone and then call her, you
>>>> *should* still end up coming back on the same frequency -- it just won't be
>>>> what's on your screen.
>>>>
>>>> If you want to make the math easier, you could set your sidetone to 500
>>>> Hz. You might also try CW mode with the filter wide open, but it still tops
>>>> out at 2800 Hz instead of 4000 Hz, so it might not be wide enough for your
>>>> taste.
>>>>
>>>> On Sat, Mar 6, 2021 at 12:37 PM Bob Liesen <[hidden email]> wrote:
>>>>
>>>>> Hi gang,
>>>>> Still learning about my KX2. One thing I think I screwed up while
>>>>> struggling with getting digital mode A set up is the offset when
>>>>> running
>>>>> SSB+CW mode. I like setting the radio to USB on 20m for instance, and
>>>>> then
>>>>> using a key for TX. I like the wider RX bandwidth offered in USB on
>>>>> RX.
>>>>> However, now when I tune in a CW station, and call him, it seems I am
>>>>> quite a ways off his RX frequency. Any thoughts?
>>>>>
>>>>> Tnx!
>>>>> Bob WB0POQ
>>>>> ______________________________________________________________
>>>>> 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]
>>>>>
>>>>