The present invention relates to a method of generating a downlink frame. It is an advantage of embodiments that thermal energy generating components, such as processors, may be heuristically selected and arranged on a selected PCB according to varying layouts and combinations and then evaluated for thermal dissipation efficiency under an assortment of use case scenarios. A mail controlling section compresses data of an electronic mail so that the data size is not more than an unsendable size recorded in relation to a destination electronic mail address by referring to an address table. The system further includes memory to store data collected from a wide-area lightning detection network. Methods for preparing the composite are provided, such methods being beneficial in that the composite is provided in high yields and at high purity.