One of the greatest advantages of the double-conversion over the single-conversion receiver is that it:

A double-conversion superheterodyne receiver uses two intermediate frequencies (IF). The first IF is typically high, which pushes the image frequency far away from the desired signal so the front-end filters can easily reject it. The second IF is much lower, allowing for narrow filtering that provides excellent adjacent-channel selectivity. By combining a high first IF and a low second IF, the double-conversion receiver effectively solves the tradeoff dilemma of a single-conversion receiver. It offers superior image interference reduction for a given front-end selectivity while still maintaining sharp filtering later in the chain. Double conversion does not inherently make a receiver louder, more sensitive, or more stable. Those attributes depend heavily on the overall gain distribution, noise figure of the first amplifier, and the quality of the local oscillators.