What was MUBLCOM's orbital speeds in miles per second?

MUBLCOM, or the Multiple User BLOS (Beyond Line of Sight) Communication satellite, operated at various orbital speeds depending on its altitude and orbital parameters. Typically, satellites in low Earth orbit (LEO) travel at speeds around 4.7 to 5.3 miles per second. If you need specific values for MUBLCOM at its designated orbit, please provide the exact orbital altitude or parameters.