Not have been convicted of or pleaded guilty to or entered a plea of nolo contendere to any felony charge or to any violation of any federal or state laws or city ordinances relating to force, violence, theft, dishonesty, gambling, liquor or controlled substances and not have been released or discharged under any other than honorable discharge from any of the armed forces of the United States. Knowledge of telecommunications systems, which may include transmission, broadcasting, and switching systems, and computerized databases, including teletype, fax, and scanning operations and procedures.