A band playing fast and heavily accented swing music: A ''jump band'' is a big and powerful jazz band (1930s+ Jive talk)
"The jump band is founded on the basic of the Moebius strip," one student E was saying heatedly.
Now, as rapidly as Louie, Frank set up the pattern of the jump band.
A jump band didn't last more than an instant, and no ship captain would risk his license by using the E frequency, anyway.
Some fool ship captain has probably messed up communications by inserting a jump band of his own.