▁the ▁Inter ior ▁in ▁January ▁ 1 9 3 6 . ▁In ▁June ▁ 1 9 3 6 ▁the ▁idea ▁was ▁flo ated ▁that ▁the ▁Post ▁Master ▁General ' s ▁Department ▁could ▁use ▁a ▁building ▁for ▁its ▁frequency ▁meas uring ▁equipment , ▁using ▁the ▁chim ney ▁and ▁water ▁tower ▁to ▁mount ▁aer ial s . ▁The ▁Department ' s ▁Radio ▁Broadcast ing ▁Branch , ▁W ire less ▁Ex perimental ▁Section , ▁occupied ▁various ▁buildings ▁from ▁ 1 9 3 7 , ▁including ▁the ▁Ac id ifier ▁House ▁and ▁the ▁F itter ' s ▁shop . ▁ ▁The ▁W ire less ▁Ex perimental ▁Section ' s ▁peace ▁and ▁quiet ▁was ▁dist urbed ▁when ▁an ▁advance ▁party ▁of ▁RA AF ▁personnel ▁arrived ▁at ▁the ▁factory ▁on ▁ 2 3 ▁May ▁ 1 9 3 9 . ▁Several ▁factory ▁buildings ▁were ▁required ▁for ▁b illet ing ▁and ▁storage ▁purposes ▁while ▁the ▁RA AF ▁was ▁await ing ▁the ▁completion ▁of ▁h uts ▁at ▁Arch er field . ▁The ▁Or dn ance ▁Service ▁also ▁st aked ▁a ▁claim ▁for ▁storage ▁space ▁from ▁February ▁ 1 9 4 0 ▁on wards , ▁and ▁the ▁Field ▁H yg iene ▁Section ▁of ▁the ▁Se vent h ▁Division ▁occupied ▁a ▁number ▁of ▁buildings ▁in ▁late ▁ 1 9 4 0 . ▁The ▁Engine er ' s ▁Supp ly ▁Service ▁branch ▁arrived ▁in ▁April ▁ 1 9 4 1 , ▁and ▁the ▁Al lied ▁Works ▁Council ▁was ▁present ▁in ▁ 1 9 4 2 . ▁The ▁ 6 th ▁Anti ▁A ircraft ▁battery