Commercial Fixed Wing
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 133; Flight Crew Total 6714; Flight Crew Type 4415
Communication Breakdown
ATC Issue All Types; Deviation / Discrepancy - Procedural Clearance
Flight Crew Returned To Clearance
Environment - Non Weather Related
GPS and radio signals very intermittent when approaching and flying through this area.  We could hear ATC when we received ACARS requesting frequency 133.45 but obviously missed them handing us off to next sector.
Air carrier First Officer reported while flying through an area of poor GPS and radio signals they missed an ATC frequency change.