Radio traffic gives wolfpacks away

Did Dönitz's micromanagement and heavy radio traffic make U-boats easier to detect?

Yes. Frequent transmissions revealed where wolfpacks were operating and enabled convoys to avoid or reinforce against them.

Heavy U-boat signalling was a serious weakness. Even without reading every message, British forces could use the volume and location of transmissions to judge where a wolfpack was concentrating. That warning let them reroute shipping or concentrate escorts. Once reinforcements and Hedgehog-equipped ships arrived, a pack expecting local superiority could instead face a parity battle.