GPS Receiver Module for NIXIE clocks

Yes, you read that correctly... a vintage Nixie clock with GPS time base synchronization! The clock is already around a quartz crystal controlled timebase for high accuracy and zero dependency on incoming power line frequency. This time we leaped over the technological time line by integrating an optional GPS time base reference for the ultimate in clock accuracy! By plugging in the optional GPS receiver module, the clock will receive GPS time using NMEA-0183 protocol. The small GPS receiver module is factory assembled and tested, and plugs directly into the back of the clock with its attached 10' cable. Needless to say, the receiver module needs to "see" the GPS satellites and therefore needs to be located near an outside window or outside.