What was found
FLT 232, LGB-SLC, AFTER LIFT OFF STARTED GETTING LANDING GEAR NOT DOWN WITH CONSTANT "RETARD" AND LOSING AUTO THRUST/PLUS NO NAV GUIDANCE. RETURNED TO LGB, PERFORMED MULTIPLE BITE CHECKS AFS, RA1 RA2 LGCIU MRR AND ALL ASSOCIATED, NO FAULTS HISTORY INDICATE RA 1 (5SA1) MULTIPLE HITS. REMOVED AND REPLACED FULL SHIP SET RADIO ANTENNAS, OPS CHECK OK MM 34-42-11-04 S, OPS CHECK OK.