Heterodyne or Beat Long wave Telegraph Receiving Set?
Too Long; Didn't ReadHeterodyne or Beat Long wave Telegraph Receiving Set. The heterodyne method will be described in this chapter. For receiving long wave stations, however, you must have a long aerial 200 or more feet in length. With a long wave autodyne, or self-heterodyne receptor, as this type is called, and a two-step audio-frequency amplifier.