A pole anchor footing system for effectively supporting a post structure within a ground surface. To accomplish this, the system receives a facsimile sent to a telephone number. The comparison deciding unit generates an inversion control signal which controls whether the input data will be inverted or not. When the fuel injection is carried out by the fuel injection valve, the fluid in the second fluid chamber is decreased corresponding to the amount of injected fluid, and thereby the float is moved in a direction from the first to the second fluid chamber. Various variants, component assemblies and methods are likewise described and claimed.