Radio receiver for the Navy `` Whirlwind ''.
Receiving and transmitting radio equipment.The Vikhr radio receiver for the Navy has been produced in an experimental series since 1937. Designed for radio equipment of ships of medium and large classes. The receiving range is from 30 KHz to 15 MHz, divided into 8 sub-bands. Superheterodyne, double conversion. There is no other information, as well as not sure what exactly this receiver is in the photo.