As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHORTLY AFTER TAKEOFF, PILOT NOTED ELECTRICAL SMOKE ODOR AND THE NR 1 COMM QUIT WORKING. HE RETURNED TO AIRPORT WITHOUT INCIDENT. LOCAL MAINTENANCE ISOLATED CONCERN TO DEFECTIVE CONTROL HEAD. WILL UPDATE AFTER TEARDOWN RECEIVED FROM VENDOR.