S4. What is “Random MS”?

In the Reference Booklet, in the RSGB Band Plan, it states: “144.200 MHz Random MS SSB calling frequency”. Could you explain please what this stands for and what it means?

MS stands for Meteor Scatter (bouncing signals off ionised trails left by meteor showers). Meteor showers are random in nature, and what you’re seeing on the band plan is the dedicated frequency for the handful of people who do Meteor Scatter.

Nothing to worry about at Foundation, and not in the course material or syllabus.