If you use those plastic insulation troughs and overlap the top one of the lower ones even if rain should sneak up past the shingles, past the builders felt it will fall on the plastic trough and be carried out past the building envelope.. 1  Reply. 2  Reply to Original. 3  Print this page. 4  Email this Message.
Double-sideband suppressed-carrier transmission. Double-sideband suppressed-carrier transmission (DSB-SC) is transmission in which frequencies produced by amplitude modulation (AM) are symmetrically spaced above and below the carrier frequency and the carrier level is reduced to the lowest practical level, ideally being completely suppressed.
Implementation: Modulation: As we mentioned before, weâll use DSB-C modulation because of its ease in demodulation. Here is the circuit used for modulation and itâs simulation: Source called V1 generates the message to be transmitted. Itâs amplitude is 5V and frequency is 1kHz.