QSO:
Ham radio shorthand for a“contact (conversation).”QSY:
Ham radio shorthand for“Change frequency.”QTH:
Ham radio shorthand for“location.”R:
Ham radio shorthand for “Iheard everything you said and don’t need you to repeat anything.”ROTC:
Reserve Officers’ TrainingCorps.RPG:
Rocket-propelled grenade.SADF:
South African DefenseForce.SBI:
Special backgroundinvestigation.SCI:
Sensitive compartmentedinformation.SIG:
Schweizerische IndustrieGesellschaft. The Swiss gun maker.SK:
Ham radio shorthand for“silent key.”SOCOM:
Special OperationsCommand.SOP:
Standard operatingprocedure(s).SSB:
Single sideband (an operatingmode for CB and amateur radio gear).SSPARS:
Solid-state phased-arrayradar system.Steyr AUG:
The Austrian army’s5.56-mm “bullpup” infantry carbine. Also issued by the Australian Army as theirreplacement for the L1A1.S amp;W:
Smith and Wesson.SWAT:
Special weapons and tactics.(SWAT originally stood for “special weapons assault team” until that was deemedpolitically incorrect.)TA-1 and TA-312:
U.S. militaryhardwire field telephones.TAD:
Temporary assigned duty.TARPS:
Tactical aerialreconnaissance pod system.TDY:
Temporary duty.Thermite:
A mixture of aluminumpowder and iron rust powder that, when ignited, causes a vigorous exothermicreaction. Used primarily for welding. Also used by military units as anincendiary for destroying equipment.TK:
Tom Kennedy.TNX:
Ham radio shorthand for“Thanks.”TS:
Top secret.TU:
Ham radio shorthand for “ThankYou.”UAV:
Unmanned aerial vehicle.UR:
Ham radio shorthand for “your”or “you’re,” depending on context.USAEUR:
U.S. Army, Europe. Spoken“Use-ah-Urr.”USAFE:
U.S. Air Force, Europe.Spoken “You-Safe-ee.”VAC:
Volts, alternatingcurrent.Valmet:
The Finnish conglomeratethat formerly made several types of firearms.VDC:
Volts, direct current.Viper:
The popular nickname forthe F-16 fighter. (Its official moniker is the “Fighting Falcon,” which mostF-16 pilots detest.)VW:
Volkswagen.VY:
Ham radio shorthand for“very.”WD-1:
U.S. military-issuetwo-conductor insulated field telephone wire.YL:
Ham radio shorthand for “younglady.” All females regardless of age are designated YLs in the ham world.