A method for controlling a combustor of an engine, the combustor having a fuel to oxidant ratio, the fuel to oxidant ratio being defined as a ratio of an amount of fuel supplied to the combustor divided by an amount of oxygen in an oxidant stream supplied to the combustor includes controlling the fuel to oxidant ratio of the combustor as a function of the amount of oxygen in the oxidant stream. The regenerator is arranged to decode the payload of transmitted XDSL signals into base digital data before repackaging and regeneration onto a twisted pair copper cable. The block and mold housing are then aligned allowing a collimator mixture to be disposed into the mold.