Aerospace Instrument-Making Annotation << Back A METHOD OF SUPPRESSING NOISE IN COMMUNICATION DEVICES A.F. Shishkina, A.N. Likontsev, A.L. Galiev The article discusses the digital squelch, which is proposed to use for additional noise attenuation in systems onboard aircraft communication signals using a linear delta modulation (LDM). It explains in detail the principle of selection squelch allowing for the LDM signal. We describe the elements necessary for building the squelch, and is a functional diagram of the device. In general, using the considered squelch also reduces the possibility of self-excitation system, and thus does not introduce appreciable distortion in operation talkies. Key words: communication devices, easing the noise, squelch, delta modulation, system-board communi-cation. Contacts: E-mail: galievanvar@mail.ru Pp. 31-35.