Dual IC broadcast-band receiver.
Valves (2 IC's, 2 diodes): TCA440, AA132, AA132, SN76001N
Intermediate Frequency: 455kc/s
Frequency Bands: 1
Chassis Notes(most schematics can be clicked to download a full size version)
Similar to MR5, if the schematic is to be believed the MR6 is just missing the pre-amp transistor between IC's