This receiver is HISTORIC. My Great Uncle personally removed it from a Lancaster Bomber after the 2nd World war at the AVRO Facility near Beeton Ontario. He had it on his shelf for nearly 70 years. And It still works.. EVEN the Magic Eye tube still works. There is a home brew power supply with an audio output amp. All works fairly well, I just have to get a better Antenna then a 30 ft wire laying on the floor.