Fighter Direction Tenders (FDTs) - RAF Cadre. Information Source; Air Defence Battle Command & Control Museum Newsletter provided by Phillip C Jones.

	Duties	No. & Ranks
Officers	Fighter Controllers (Sector G)	2 Squadron Leaders
		3 Flight Lieutenants
	Fighter Controllers (G.C.I./C.H.L.)	3 Flight Lieutenants
	Filter Officer	1 Squadron Leader
		3 Flight Lieutenants
	Movements Liaison Officer	2 Flight Lieutenants
	Signals (G)	1 Flight Lieutenant
	Signals (Radar)	1 Flight Lieutenant
	Admin ("Y" Intelligence)	1 Flight Lieutenant
	Code and Cypher	1 Flying Officer
	Intelligence	1 Flying Officer
Other Ranks	Wireless Mechanics	1 Sergeant
		3 A.C.s
		1 Sergeant
		3 Corporals
		20 A.C.s
	Radar Mechanics	1 Flight Sergeant
		2 Corporals
		4 A.C.s
	Radar Mechanics (Air)	1 A.C. (See Note 1)
	R.T.O.s (Group IV)	20 A.C.s
	R.T.O. (D/F)	3A.C.s
	R.T.O. (for "Y" Duties)	5 Sergeants
	Ground Observers	4 A. C. s
	M.T, Mechanics (Note 2)	2 A.C.s
	Clerks, G.L	1 A.C.
	Clerks, G.D. (Code and Cypher)	2 Sergeants
	Clerks, S.D. (0). (Note 3)	7 Sergeants
		3 Corporals
		33 A.C.s
	Radar Operators (1). (Note 4)	1 Sergeant
		5 Corporals
		30 A.C.s
		2 A.C.s
Note 1	For A.I. beacon maintenance.
Note 2	For M.T. and diesel power units maintenance.
Note 3	Deputy Controllers	4 Sergeants
(a) Non-Watch basis:	Controller's Assistant	3 Sergeants
	N.C.O. i/c Ops. Room	1 Sergeant
(b) Per Watch	Supervisor	1 Corporal
(total of 2.5 watches)	Plotters	4 A.C.s
	M.L.O.s Clerks	2 A.C.s
	Tellers (to H.Q. Ship for Shore and Bridge Plots)	3 A.C.s
	Bridge Plotters	2 A.C.s
	Vertical Plot Plotters	1 A.C.
Note 4
(a) Non-Watch basis:	N. C. O. i/c Radar Room	1 Sergeant
(b) Per Watch	(total of 2.5 Watches)
		G .C. I. Type I I
	Supervisor	1 Cpl 1 Cpl
	Navigator	1 A.C. 1 A.C
	P.P.I. Radar	1 A.C 1 A.C
	Liaison Teller	1 A.C 1 A.C
	G.S.M. Plotter	1 A.C 1 A.C
	Height Reader	1 A.C 1 A.C
	C. T. T. Teller	1 A.C 1 A.C