A method and system for establishing a non-frequency-hopping connection link between a slave device with another slave device in a communications network having a plurality of frequency channels within a radio frequency band known as the unlicensed ISM band, wherein the connection links between slave devices are capable of being carried out in a frequency-hopping fashion. Even heating is ensured by exposing at least the first component to hot steam in a closed mixing container for a set period of time, stirring andor shaking at the same time, before or after the second component has been added. The first and second input signal may be complimentary. The particular UV absorbers desired as additives within target polyesters also tend to exhibit certain yellowing effects that require attention as well. Among the candidates, the server then designates a finalist that is preferably not designated to be a supplying device more often than it should be on average.