Good point not poiny :-).
On Jun 13, 2010, at 5:18 PM, Mike Cox [via Elecraft] wrote:
> The only real difference I've heard is that on some strong signals you
> can occasionally hear the unwanted sideband mirroring the intended AFSK
> signal. This signal is at a level reduced by the unwanted sideband
> suppression characteristics of the transmitter involved and separated by
> twice the modulating tone frequencies. This might put the two signals
> over 4 KHz apart, making it not apparent who the culprit is. It's pretty
> easy to see the problem with a panadapter. Note that some current radios
> (for example. IC756ProIII) only rate their transmitted unwanted sideband
> suppression at -40 dB (K3 is -50 dB). Some older radios are much worse.
> An unwanted sideband of -40 dB from a 1.5Kw signal would be 150 mW. I've
> worked DX with less.
>
> On 6/13/2010 17:07 PM, N1JM wrote:
> > In real world operating, has anyone really experienced a difference or could
> > tell a difference?
> >
> ______________________________________________________________
> 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>
>
> View message @
http://elecraft.365791.n2.nabble.com/MMTTY-FSK-tp5170082p5175672.html
> To unsubscribe from Re: MMTTY FSK, click here.
>
Locked
