Reply To: BB60C 2FSK demodulation

I am attempting to use the digital demodulation as you have shown. Maybe a full screen shot would help so I could see all of your settings. I assume the problem is the operator. Maybe if I do a better job explaining, you can help me out.

The first plot showing a peak hold of the two tones.

Second plot showing the two devices. Slave device sends more data and has the lower amplitude.

Third plot zooming in to see the bit rate which appears to be roughly 1200bps.

Now when I try to decode this with the digital I need to use much higher sample rates than 1.2K before the spectrum shows the two spurs. If I use 50X over sample (60K) the eye diagram looks correct and I can see the preamble but a 0 will be represented with 50 zeros sort of thing.

Any help in what I am doing wrong would be greatly appreciated.

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