Headphones high resistance TA-56M 3200 Ώ 2X1600Ώ cristal detector radio USSR military

Headphones high resistance  TA-56M 3200 Ώ 2X1600 cristal detector radio USSR military

Marked in rombus ♦ russian standard for  military application

Headphones  consists of two series-connected 

telephone capsules TA-56M 1600 ohm

due to the high impedance

 can be used for making the crystal radio

 

Specifications TA-56M

Impedance - 1600 OhM

Operating frequency range, Hz 300 - 3000

The unevenness of the frequency characteristics 

in the frequency range 300-3000 Hz, not more than 13 dB