PA-28 Cherokee/Archer/Dakota/Pillan/Warrior
Flight Crew Private
Flight Crew Last 90 Days 90; Flight Crew Total 98; Flight Crew Type 98
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Returned To Departure Airport; Flight Crew Landed As Precaution; Flight Crew Diverted
Aircraft
Departed ZZZ enroute to ZZZ1 at 4;500 ft.  8 miles west of ZZZ2 I noticed my oil pressure gauge reading in the red zone.  I notified ATC of situation and was making a plan to return to ZZZ.  Shortly after ATC notification our radios started to go out.  I squawked 7600 and headed directly back to ZZZ.  I landed without further incident.
Private pilot flying PA28 aircraft reported the oil pressure gauge indicated in the red zone and the radios began to fail during cruise. Pilot returned to departure airport.