Japanese radar ideas outpaced industrial production

Why did Japan field so many different radar variants?

Japanese radar development followed a cottage-industry pattern, producing successive small batches that improved incrementally without converging on large standardized production.

Japanese radar development followed a cottage-industry pattern. Engineers repeatedly produced small batches with modest improvements rather than settling on a few designs for mass manufacture. That pattern could generate many capable experiments while complicating standardization, deployment, and support. Many radar types did not guarantee the industrial ability to equip an entire fleet consistently.