All, It would appear that ROS-16 is not much different than say Olivia 128 / 2K. The number of tones may differ, but they both use MFSK modulation with sequential tones running at 16 baud. The question is how can ROS be considered a SS frequency hoping mode while Olivia and it's derivatives are not?
A closer look shows that they are quite similar (see attached). Tony -K2MO
