Abstract: A mid of train (MOT) mobile unit for use with a train is provided. The MOT mobile unit comprises a first hose for mounting the MOT mobile unit between first and second railway cars of the train located near a middle of the train and a radio for communications with an end of train (EOT) unit disposed on one end of the train and for communications with a head of train (HOT) unit disposed on other end of the train. With the first radio, the MOT mobile unit provides a repeater device functionality for communicating between the EOT unit and the HOT unit. The MOT mobile unit is configured to receive a power from a brake line of the train that runs a length of the train, wherein the power is derived from a compressed air in the brake line by means of an air-powered generator that recharges a battery.

Abstract: A mid of train (MOT) mobile unit for use with a train to bridge communications between a head of train (HOT) device installed in a locomotive and an EOT device installed on a last car of the train. The MOT mobile unit comprises a first hose for mounting the MOT mobile unit between first and second railway cars of the train located near a middle of the train. The MOT mobile unit further comprises a first radio for communications with an end of train (EOT) unit disposed on one end of the train and a second radio for communications with a head of train (HOT) unit disposed on other end of the train. With the first and second radios jointly the MOT mobile unit provides a repeater device functionality for communicating between the EOT unit and the HOT unit.

Abstract: The invention relates to a process for the preparation of a compound of formula I ##STR1## R is alkyl, and X is bromine or iodine which process comprises: reacting a compound of formula II in a two phase system, said system comprising an aqueous phase and an organic phase comprising a water immiscible solvent, with an acylating agent of formula III or IV in the presence of a base catalyst.