0-9 | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
The avoidance of any type of transmission, emission, or radiation by any means, including radiation from receiving equipment. Note: An example of communications silence is the maintaining of a listening watch only if the receivers do not radiate beyond a specified level.