[RTTY] RTTY Now trashy signals

[Kok Chen]

On Jan 8, 2013, at 1:17 PM, Mark wrote:

>  the fuzzy tones (although that could be multi path causing the phase distortion),

Check out what a bit-banged FSK ("EXTFSK") from a slow Windows machine sounds like.  You might be surprised :-).

> Not to mention all the click like interference each time there is a shift from mark to space.  

Yeah, those are keying sidebands from the unwaveshaped RTTY signals.   Same mathematics as CW keyclicks.

Not all AFSK modems apply waveshaping to get rid of them either, so it is not just coming from FSK transmitters.

73
Chen, W7AY