All heavy items had to be winched to the upper level. Initially all the material for two brick buildings, each 16’ x 16’ and 10' high for use as Transmitter and Receiver Blocks, plus all the CHL radar equipment had to be moved. Each of the Blocks had an aerial gantry built over it. The gantries were similar to the one in the photo below, though the one shown was on Fair Isle. The picture gives some idea of the construction techniques which would have been available at the top of Saxa:
However, the Navy decided that they would like to add one of their own radars, a Navy Type 273. This radar was specifically designed for use against surface and low level targets and belongs in the group of radars the RAF knew as CHEL (Chain Home Extra Low). This decision was unsurprising as the detection of U Boats and enemy shipping was the main purpose of the Unit. This equipment was more usually carried on board ships. I don’t have a photo of one mounted on a 1941 CHL Building but photos of ship borne equipment follow:
There is even a report of turkey being reared for the Christmas dinner in 1941. Fishing was also a significant occupation for those off duty, with large freshwater trout being reported as plentiful in the Loch of Cliff, less than 2 miles from Hamarsgarth. One haul from a sea fishing trip, reported in Jun 43 (possibly from Burrafirth), records 16 sea trout and 43 other fish (plaice & sole) on a single longline. War time rationing affected some people more than others!
Some of those who served at AES4:
Lt Richard Feachem Relief CO vice Lt Lewis - Mar 41 and visited on technical duties Jun 42