Abstract: The article presents a method of carrier-wave transmission of digit siesmic signals, which can replace the existing transmission by cable. In our device gain-instantaneous amplifier and delta-modulation are adopted in order to Constrict the amplitude and digitalyze. Channeling is accomplished by frequency-division amplitude modulation. Our transmitter is accurate, reliable and at the same time very simple in construction. Some technical problems and the methods to solve them are discussed in the article.