sudden dive

[XPS]

Slow controls can be interference, like every n'th packet is getting through successfully. With the Spektrum system you can deliberately cause this if you blank out the upper or lower frequency that it uses - the Spektrum uses 2 frequencies, randomly selected 1 in the lower 2.4GHz range and 1 in the upper 2.4GHz range. You can blank out a frequency easily with a video transmitter. With two video transmitters you can stop the Spektrum system completely.