Thanks, Chen. My main worry would be not properly (over) driving the
transmitter with AFSK and harmonics. I guess my hearing isn’t too bad yet so I
will continue using the high tones but I use FSK only.
73, John N1JM
> On Mar 24, 2016, at 11:25 AM, Kok Chen <rtty@w7ay.net> wrote:
>
> If you overdrive an SSB transmitter, you will put out lots of garbage since
> the third harmonic of the low tones will go through the transmit filter.
> The third harmonic (even second harmonic) of the high tines are usually
> outside the transmit filter.
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