Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 177; Flight Crew Total 5785; Flight Crew Type 4325
Distraction; Human-Machine Interface
Aircraft Equipment Problem Less Severe
Flight Crew Overcame Equipment Problem
Aircraft; Environment - Non Weather Related
While at the gate in ORD we experienced a momentary Radar Altimeter 1 fault. The fault resolved itself without intervention and we departed as scheduled.  On climb out passing 16;000 ft. near Dekalb; IL; we again experienced a Radar Altimeter 1 fault accompanied by a GPWS fault.  This fault also cleared without intervention and functioned normally for the remainder of the flight.Not sure if this is related to the 5GC rollout but wanted you to have the information.
Captain reported possible 5G problem associated with the radio altimeter; at the gate; and then airborne enroute.