We are indebted to Mike Hirst for this material on Hack Green. Hack Green was a military radar unit with a civil component that provided a radar service in the NW of England.
HK1 Hack Green Type7 and S264 radars. there were also two type 14s, a high and a low.
HK2 Hack Green Type13 heightfinders
HK3 there is a description of how to use the edge lit board within the JATCRU Northern Radar Post contained in their procedures. Northern Radar replaced Mersey Radar.
Mike has also recounted his experience of Hack Green and some of his subsequent career in ATS and related industrial careers if not in ATC.
and another photo from Barry Davidson
HK6 Marconi 264 aerial
Ray Draper has sent in a whole batch of photos obtained on a visit to the museum at Hack Green