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nd (East Lancashire) Signal Regiment 43rd (Wessex) Signal Regiment Digital signal processor Audio signal processing 85 (Ulster) Signal Squadron Signal Hill, California 47th (London) Signal Regiment Traffic signal preemption 50th (Northumbrian) Signal Regiment United States Army Signal Corps Signal analyzer Cab signalling 36th (Eastern) Signal Regiment Analog signal processing Smoke signal City of London Signal

s Russian Signal Troops Standard frequency and time signal service Union Switch & Signal 12th Signal Brigade (United Kingdom) Royal Corps of Signals 40th (Ulster) Signal Regiment 44th (Home Counties) Signal Regiment Signal Mountain North American railroad signals Flag signals Large-signal model 34th (Northern) Signal Regiment Signaling (telecommunications) C signal handling Signal to Noise International maritime signal flags Bus priority signal Mixed-signal integrated circuit 39th (Skinners) Signal Regiment London District Signals 48th (South Midland) Signal Regiment 7th Signal Regiment (United Kingdom) 516th Signal Brigade 9th Army Signal Command (United States) 32nd Signal Regiment (United Kingdom) Signal peptidase I Busy Signal Rail