On 08/23/2011 05:53 PM, Larry Gauthier (K8UT) wrote:
> In theory the transmitted signals are the same.
> In practice they are often very different.
>
> As others have pointed out, many AFSK operators overdrive their mic inputs,
> or transmit audio tones whose frequency is so low that the second (and third
> and fourth) harmonics fall within the bandpass of the transmitted sideband
> signal. The result is broad, splattering signals or signals with multiple
> spikes beyond the primary RTTY signal. It's not a pretty sight, and the
> receiving end definitely knows the difference.
>
> -larry
> K8UT
I may be missing something here, but how are the newer rigs generating
FSK ? Are they shifting xtals or just sideband tones ?
Ed W3NR
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