Flight Crew Private; Flight Crew Instrument
Flight Crew Last 90 Days 30; Flight Crew Total 1200; Flight Crew Type 200
Workload; Troubleshooting; Human-Machine Interface; Confusion; Distraction
Aircraft Equipment Problem Less Severe
Flight Crew Requested ATC Assistance / Clarification; Flight Crew Became Reoriented
Software and Automation; Aircraft; ATC Equipment / Nav Facility / Buildings
Complete GPS Signal loss for 2 minutes without NOTAM or other notification. I have 5 devices with built-in GPS devices connected to 3 GPS antennas.  Additionally; I had a portable GPS; with its own GPS antenna and power supply.  All GPS devices reported a complete lost of signal.  I covered about 3.5 miles while on the visual approach.  Signal was restored; but the virtual glideslopes from the GPS's were not available. I reported the event to the tower. Since I was in visual condition; I was able to maintain control of the aircraft and was hand flying for the landing.  Since I had been navigating with GPSS and the autopilot; this could have created a surprise in the loss of GPSS steering.  Additionally; had this been in IMC; I would have lost the glideslope and needed to make changes.  I do not know how the coupled autopilot would have responded. I do not know where else to report this sudden loss of GPS signal.
A General aviation pilot reported loss of GPS signal. The reporter had five GPS receivers in the aircraft.