ExCreamie
Ah but don't confuse range scales with detection range. My VW golf has a speedo marked up to 140mph.....My recollection of Lightning AI detection ranges was 60 miles on an oil tanker; 30-35 miles on a Victor Tanker (or Bear D) and a max of 20 on another Lightning. In behind and looking down on the target at low level and you struggled to break him out from background noise above 3 miles. But the BScope tube was agreat place to stack your sandwiches on a ferry flight.....