[Elecraft] K3 Transmitting CW in SSB mode

[George Kidder]

Another way to look at the use of CW in SSB mode on the K3:  What I 
think the rig does when you hit the key is inject an audio tone at the 
CW offset frequency into the audio chain for the SSB signal.  If all is 
clean and not distorted, the result will be a single RF frequency offset 
from the SSB "carrier", and will be receivable as such by a SSB receiver 
tuned to the SSB carrier frequency.

If the K3/K3S doesn't actually generate an audio tone, it sure behaves 
like it.

George, W3HBM


On 7/26/2016 12:55 PM, Phil Hystad wrote:
> Don (and others who answered):
>
> Thanks.  I was guessing that the answer to the second question (CW mode TX  —> SSB RX) was as you said but entirely confident.
>
> So, given what you are saying on sending CW while in SSB mode, the K3 does the following things:
>
> 1.  Allows CW to be sent in SSB mode (enabled or disabled).
> 2.  Shifts the actual TX frequency by side-tone monitor frequency per LSB/USB direction.
>
> Therefore, given that the RX station is receiving at the same dial VFO frequency reading, they will
> hear a tone roughly equivalent to the tone determined by my side-tone frequency.  Of course,
> assuming they are the same LSB or USB as I am.
>
> As someone else said — “why don’t all transceiver vendors do the same and support this feature”.
>
> 73, phil, K7PEH
>
>
>> On Jul 26, 2016, at 5:30 AM, Don Wilhelm <donwilh at embarqmail.com> wrote:
>>
>> Phil,
>>
>> With CW+SSB turned on, SSB will be sent at the carrier frequency indicated on the VFO.
>> When CW  is sent, the frequency is shifted by the amount of your sidetone pitch, so the receiving station will hear a pitch equal to your sidetone pitch.
>>
>> Note that for normal CW, the signal frequency is the same as indicated on the VFO, i.e. it is different in CW+SSB.
>>
>> If you are sending in CW mode and the receiving station is listening in SSB - and both VFOs are tuned to the same frequency, they will hear nothing because their receiver will likely not hear a signal at the carrier frequency - that does assume that both stations VFOs are calibrated properly.
>>
>> 73,
>> Don W3FPR
>>
>> On 7/25/2016 11:34 PM, Phil Hystad wrote:
>>> I have my K3 enabled to allow the sending of CW in SSB mode.  However, I am not sure how this actually works.  Therefore, this question.
>>>
>>> If the K3 VFO is dialed into 3850 KHz (for example) and the mode is set to SSB and my sidetone monitor of the CW signal is set to 700 Hz (not sure if this matters), what will the other station here if I send something in CW while in SSB mode on my K3.  In particular:
>>>
>>> 1.  They are also dialed into the same frequency 3850 KHz, what will they hear: a tone of 700 Hz, a tone of some other audio frequency, or no tone at all.  My only assumption is that they are in SSB mode and dialed to the same frequency as I am.
>>>
>>>
>>> 2.  They (the other station) are dialed into the same frequency of 3850 but their mode is CW and not SSB while my mode in sending is still SSB.  Same questions, what will they hear?
>>>
>>>
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