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Hi David, this question may be due to my limited knowledge, but when you refer to a stationary signal (i assume this means consisten frequency modulation) , does that apply to amplitude as well? If a signal is Class A but with very little power, it would be difficult to trade despite being stationary no?

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Hey Hoot, yes the best signals will exhibit very little frequency or amplitude change over the sample, of which I like to have at least 6 iterations of the component in question. So a signal that shows drops in amplitude over the sample will not be rated A, regardless of whether it is highly frequency stationary.

The rating system is detailed a bit more here:

https://www.sigma-l.net/p/l-signal-rating-system

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