I have a radio/intercom which looks much like what I recall at the NuTone system. It has 8 switches, a Listen/Talk , AM, FM, FM-AFC and Phone selector. Inside the rough-in box is a sticker "3-Conductor Cables from room speakers, each has Silver, Center, Copper terminal. There are also connectors labled "Antenna, Blue, Yellow. Blue and Yellow are for the door speaker. The sticker also says "MUSIC & SOUND INC, Dallas, Texas, 75207, The front of the unit says Model 2000 I'd like a diagram for the radio / intercom amps. The radio works, but he intercom does not, or else I don't know what I am doing. Thanks in advance Bill Johnson

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