The MN-12 radio receiver from the NKTU-48 train equipment set.
Amplifying and broadcasting equipmentThe radio receiver "MN-12" from the set of train equipment "NKTU-48" has been produced since 1948. The radio was included in the set of train radio broadcasting equipment (judging by the HF bands and on international flights). Receiver ranges DV, SV and two HF sub-bands, frequencies are visible in the first photo. It is clear that there was also an amplifier with subscriber loudspeakers. More information could not be found.
