Oktava TMG-1 Vintage Telephone Headset

The TMG-1 telephone microphone headset was supposedly produced since 1959 by the Tula Oktave factory. Produced in two versions, with a low-impedance and high-impedance microphone. Designed to work in the equipment of long-distance telephone communication. Contains carbon microphone type "MK-60T" and telephone dynamic capsule. The headset was used by linear lineers to check the line. The frequency range of the phone is 300 ... 3000 Hz. Non-uniformity of the amplitude-frequency specification - 13 dB.

This one comes in the original box.