So having laid down the gauntlet to Anton and awaiting what will be, I presume, his epic response; I have moved on to other things, as the title says "less un-promising problems.
But here is a very small hint
That is called a "tease". Anton deserves my best efforts as the principal guest poster on his blog, and thus I descend into click baiting.
Now suppose you know that a war is brewing and your bosses would like you to create a "Death Ray" because your bosses had read Jules Verne and H.G. Wells too much when they were lads. That is where Robert Watson-Watt found himself through most of the inter war years. Eventually he convinced management that there was another possibility to pursue that was in Watt's words "still difficult, but a less un-promising problem." Enter this project.
I actually bought these kits back in my All Quiet On The Martian Front build up. I thought it might be cute to have Martians worry about walking into power cables. However, after purchasing the two kits you will meet in this post I remembered that the game is set just prior to World War I, and there was just not much electrification outside of large cities so this got 'back burnered' until this new prospect emerged.
So what do the finished products look like? The British Chain Home Radar station (CH for short hand) in about 1/200 scale.
The basic system could "see" out to almost 150 miles in perfect weather conditions (rare in Britain) but could still discern German planes at over 100 miles in poor weather. However it had two blind spots which were detected prior to the outbreak of hostilities and work begun to correct the deficiency. The first blind spot had to do with deflection angles and the plethora of stations built by the Brits covered the deflection angle blind spot as the spot only existed in a particular station so overlapping the stations covered these side angles.
However the second blind spot proved more tricky. The system was blind below 500 feet, so a low approach would be undetected, when an approach at the cliffs of Dover was added (the stations were built on top of the cliffs) the height of the cliffs added several hundred more feet to the blind spot.
The solution to the low altitude blind spot was the Chain Home Low system (CHL for short).
The solution to this persistent low altitude problem was the Chain Home Extra Low Radar set. (CHEL)
As far as altitude limitations,if a plane was flying, the CHEL system could see it - if it was in range. The CHEL had only one problem and that was range. Under optimal conditions it could see as much as 10 miles into the gloom. However, under real world conditions 7 miles was its maximum range. While 7 miles still seems long. Planes flying at about 400 miles an hour cover that distance in just over a minute. CHEL was used for high value targets to make sure nothing could sneak in un announced.
This is exactly the sort of project that I love in gaming. I get to combine a little research, with a little 'problem solving' and generate some eye candy for my Battle of Britain Blood Red Skies Games. The idea that all this arose from weirdo's like Baldwin and Balfour's 'ancient' sci-fi fetishes and eventually gets turned to something practical by a career bureaucrat, is simply marvelous In My Opinion. To top it all off there is also a wargaming aspect to it all as Wells was an early practitioner of wargames, which then led to King Edward becoming a devotee, and this being one of the VERY few things that Edward VII and George V agreed upon so you have more than 36 years of Kings playing these games and politicians followed them. So the next time you watch the weather radar reports, remember this is where it all started as a "less un-promising problem".