A modern destroyer's guns and radios in earlier naval battles

How far back could a modern destroyer without its missiles provide enough communications and live sensor data to tip a battle?

Its guns, radar, and radio could help fleets in the world wars. Earlier sailing fleets could use scouting reports through visual signals, while the discussion identifies a possible mid-century electronics compatibility gap.

A modern 5-inch gun is judged capable of attacking aircraft and mission-killing older battleships or cruisers before they could engage effectively. The proposed targets include bridges, masts, and sensor systems, whose loss could prevent an opponent from fighting. Radar and radio would also provide useful information to fleets in either world war. A tentative exception concerns the 1950s and 1960s, when attempts to integrate incompatible electronic systems might be harder than using simpler earlier communications. This is an assessment of the hypothetical scenario, with the practical compatibility of particular ships left unspecified.