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Duty cycle of CW-tone

No research... just some common understanding I think. CW entails transmission of 'dits' (short-length) and 'dahs' (3x length of a 'dit') via keying an RF transmitter. In between such transmitted '...
ECMO1's user avatar
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7 votes
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Can we catch signals from a cellphone using an external device?

The first two? Yes. The third one? Yes, you can search for patterns, and you'll find them, because not all the information is encrypted. The encrypted information probably won't have patterns, or if ...
BeB00's user avatar
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How do I generate a trigger signal from a periodic analog signal having varying amplitude

I would use the following: Since you want a threshold relative to the signal's amplitude, first decide if this is RMS, average, or peak amplitude, and use the corresponding detector on the signal to ...
bobflux's user avatar
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How do I generate a trigger signal from a periodic analog signal having varying amplitude

Of course, it's impossible to have the circuit trigger as some point on the rising edge of its own cycle, since you can't know what the peak amplitude is until you reach it. You could sample the ...
vir's user avatar
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How do I generate a trigger signal from a periodic analog signal having varying amplitude

With edge triggering, you generally have two main levels: the arming level and the firing level. When your signal passes the arming level (e.g., a 0V DC offset sinusoid rises above 0V), your system ...
Kiwi's user avatar
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