Choosing advanced radar or working gas turbines in the 1930s

Which would be more useful in the 1930s: radar from 1943 or working gas turbines?

Knowledge of mature radar would help accelerate existing research, while working gas turbines supplied early enough could open a new propulsion path.

Radar development was already under way, so knowing how useful it would become by 1943 would justify concentrating money on that work. Working gas turbines would introduce something less familiar. The discussion connects Whittle's research with turbine work at Parsons and John Brown, strands that had not yet been combined into the proposed naval system. Receiving usable gas turbines in 1933 could therefore change propulsion choices substantially, while radar offered an existing development path to accelerate.