Abstract: A mobile surveillance and/or security unit. The unit includes a trailer, a tower mounted to the trailer, a plurality of apparatus positioned on the tower, and at least one power source configured to provide power to the plurality of apparatus. In addition, at least one of the plurality of apparatus is a communication apparatus.

Abstract: A site system for remotely monitoring and controlling portable machines is provided which includes a single channel radio frequency network. At least one portable machine has a microcontroller for controlling operation of the portable machine, a plurality of sensors for supplying machine operational data to the microcontroller, and a radio frequency transceiver unit. The radio frequency transceiver unit communicates with the microcontroller, and with the single channel radio frequency network. At least one host computer has a radio frequency transceiver unit. The host computer communicates with a predetermined portable machine by data transmissions on the single channel radio frequency network. A radio frequency protocol controls radio frequency data transmissions on the single channel radio frequency network.

Abstract: A computerized diagnostic system includes a microprocessor-based electronic controller which controls a portable machine. Electronic sensors provide raw, operating parameters to a RAM type memory of the controller. A locator locates predetermined RAM addresses of raw machine operating parameters which are known to be useful in the monitoring and diagnosis of the portable machine. A remote, microprocessor-based computer diagnoses and monitors the electronically controlled machine. A display means displays the user friendly symbols in function-specific groupings which reveal patterns of machine operation, and which identifies the process which the machine is performing.