[Elecraft] Point me to the note for sending CW when in, SSB mode

[Don Wilhelm]

I have always thought of "MCW" as an AM signal - used so that receivers 
with only AM capability could copy them.

OTOH, if a SSB signal with sufficient carrier and opposite sideband 
suppression is presented with an undistorted sine wave signal, it can be 
just as good as a CW signal.  Unfortunately, all those conditions are 
not satisfied with CW in SSB where an open mic is also present.

73,
Don W3FPR

On 6/15/2013 6:40 AM, David Woolley (E.L) wrote:
>
> Most modern commercial transceivers effectively generate CW as SSS 
> MCW.  I think the K3 does it at about 15kHz or less, which is within 
> the audio range.   I suppose the K3X could generate  it directly, by 
> just keying the I signal to the modulator; however, that would mean 
> moving the VFO between transmit and receive, at the QSK rate.  (Keying 
> I on the K3 would probably be a bad idea, as it would mean that any 
> transmit roofing filter would need to pass the first LO frequency and 
> therefore be subject to some carrier leak when key up, so I presume 
> that the CW is actually synthesized as fully fledged MCW.  Even if it 
> keyed I, you could treat that as MCW with a side tone of 15kHz.)
>
> Even the K2 architecture is effectively an MCW one, but in that case 
> the initial tone is in the MHz range.
>