A family type utility radio. The resultant design was elegant. This radio had it all. Sensitivity is one of the most important features of a radio that is asked to operate in the boondocks. It has become standard practice in radio design to take the input from the loop or rod antenna and immediately mix it with a local oscillator.
Performance is only adequate, however.
The Super Radio has a TRF amplifier on both AM and FM reception. The TRF Amplifier consists of a low noise transistor amplifier with a tuned tank circuit that tracks the oscillator frequency amplifying the desired signal only and providing a high level for low noise mixing. In today's world the only radios that use TRF inputs are expensive automobile and communication receivers. By amplifying the signal before mixing the Super Radio provides superior reception of weak signals. Most radios have one or maybe two stages of IF amplification to provide a pass band sufficient to reduce inter-station interference.