McIntosh MR-77 Tuner

FM signals enter the tuner through the antenna terminals. A coaxial cable is used to conduct the signal to the front end. In the front end the stations are separated, amplified, and converted to a common 10.7 MHz IF frequency. Instead of using a conventional easily overloaded small transistor or FET as a straight RF amplifier, the MR 77 takes a different approach. A rugged Junction Field Effect Transistor is used as an impedance converter to drive a real 5-watt power transistor. This hefty combination (called a cascode circuit) makes the RF amplifier virtually impossible to overload or cross modulate. As an example, if you are tuned to a 3- micro-volt signal at 96.3 MHz, the MR 77 will reject signals elsewhere on the dial which are at least 4,000,000 times stronger. For example, a 12-volt signal received at 104.3 MHz would not bother the signal at 96.3 MHz at all. And, when tuned to 104.3 MHz, your tuner will not overload.

Some minor scratches, mostly on top.
Will come in new "like original" carton just purchased from McIntosh for safe shipping.