Where a station does not have any specific position information to transmit
(for example, a Mic-E unit without a GPS receiver connected to it), the
station must transmit a default null position in the location field.
The null position corresponds to 0° 0' 0" north, 0° 0' 0" west.
The null position should be include the . symbol (unknown/indeterminate
position). For example, a Position Report for a station with unknown position
will contain the coordinates …0000.00N\00000.00W.…
