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Dynamic microphone "MD-44" was produced presumably since 1963 by the Tula plant "Octava". The MD-44 microphone has a unidirectional cardioid characteristic and is intended for reportage and studio purposes. The operating frequency range is 100 ... 8000 Hz. Load resistance 250 Ohms. The level of axial sensitivity is 78 dB. Sensitivity 0,63 mV / mn. The difference in sensitivity between the front and rear is 10 dB. Dimensions mikofona 33h50 mm. Weight 200 gr. The microphone was produced in a package with a studio stand and a pen holder. Information about the microphone "MD-44" in the magazine Radio No. 2 for 1969.