Telephone and microphone headset '' TMG-1 ''.
Headphones, headphones, headsets ...The telephone and microphone headset "TMG-1" was produced presumably since 1959 by the Tula plant "Oktava". It was produced in two versions, with a low-impedance and a high-impedance microphone. Designed to work in long-distance telephone equipment. Contains a carbon microphone of the "MK-60T" type and a dynamic telephone capsule. The headset was also used by line fitters to test the line. The frequency range of the telephone is 300 ... 3000 Hz. Frequency response 13 dB.
