00:04:00 COMMUNICATIONS SYSTEMS

 00:04:01 CLASSIFIED MATERIALS 00:04:02 INTERCOM 00:04:03 SUBSPACE COMMUNICATIONS Return
 * MASTER CIRCUIT
 * PRIVATE
 * SEALED & ENCODED TRANSCEIVERS
 * BANDS
 * CODE PHRASING
 * ENHANCEMENT
 * TACHYONIC THEORY
 * TRANSMISSION ENCODING
 * UNIVERSAL TRANSLATOR