▁cam eras , ▁the ▁A PR - 9 / 1 3 ▁rad ar ▁intercept ▁receiver , ▁the ▁Q RC - 1 5 ▁D F ▁system , ▁the ▁A PA - 6 9 A ▁D F ▁display , ▁the ▁A PA - 7 4 ▁pul se ▁analy ser , ▁the ▁Am pe x ▁t ape ▁rec order , ▁the ▁System ▁ 3 ▁receiver ▁to ▁intercept ▁enemy ▁communic ations , ▁the ▁A PS - 5 4 ▁R WR , ▁a ▁noise ▁jam mer , ▁the ▁R AD AN ▁system ▁do pp ler ▁rad ar ▁navigation , ▁and ▁others . ▁In ▁May ▁ 1 9 5 9 , ▁an ▁upgrade ▁program ▁known ▁as ▁Ph ase ▁VI ▁was ▁approved , ▁and ▁added ▁the ▁AT IR ▁air - to - air ▁rad ar ▁jam mer , ▁replacing ▁A PR - 9 / 1 3 ▁with ▁AL Q - 2 8 ▁fer ret ▁system , ▁the ▁Q RC - 1 5 , ▁ 3 ▁ 1 4 - channel ▁record ers ▁and ▁ 1 ▁ 7 - channel ▁high ▁speed ▁rec order ▁to ▁record ▁EL INT ▁systems , ▁the ▁K - band ▁receiver , ▁the ▁AS N - 7 ▁navigation ▁computer ▁replacing ▁R AD AN , ▁and ▁F ult on ▁Sky hook ▁system . ▁Ne pt une ▁MR . 1 ▁British ▁design ation ▁of ▁P 2 V - 5 ; ▁ 5 2 ▁delivered . ▁CP - 1 2 2 ▁Ne pt une ▁RC AF ▁design ation ▁of ▁P 2 V - 7 .( jet ▁pod ▁not ▁initially ▁fitted