[GooseF22]

You have to understand the difference in electronic terms between persistance and noise. Proponents of frequency hopping will say that you would have to use alot of power and span a wide bandwidth to knock it down, but that does happen with harmonics. the issue with locked freqs is that if noise hits it, you have to burn through above the noise threshold. In radar theory, we use both, but to burn through, a narrow bandwidth is always used because it doesn't lose any accuracy if its above the threshold, and a transmitter can radiate more effective power if its not hopping freqs, thats physics. So with spektrum, they emit a large signal on two channels, with farly narrow bandwidth, but not overly narrow, but since the processing is not amplitude based, or contengency signal based, noise doesn't slow it down. Im not familiar enough with the inner workings of FASst to comment at the processing level.