Why American and British airborne radar developed at different rates

Why did the United States lag Britain in airborne ground- and surface-search radar?

The two countries emphasized different programs while working with finite resources; neither could develop every desired system at once.

Different development priorities are offered as the explanation for the gap in airborne ground- and surface-search radar. Britain and the United States both had finite resources in the period under discussion. Neither could develop every desired system at once. The comparison cautions against reading later American resources back into the earlier choices.