What’s an LRAD? Explaining the ‘sonic weapons’ police use for crowd control and communication
theconversation.com
What’s an LRAD? Explaining the ‘sonic weapons’ police use for crowd control and communication
Police do use ‘sound cannons’ at protests – but it’s unlikely they’re responsible for the injuries claimed by some protestors.
3 months ago
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 Reminder: At 12pm, October 5th, Long Range Acoustic Device (LRAD) emergency alert will sound throughout Southern Marin for its monthly test.⁠ ⁠ Please don't call 911 when you hear the sirens. Use 9-1-1 for life-threatening emergencies only. ⁠ ⁠ If you hear the siren at any other time, tune in to KQED 88.5 FM, KCBS 740 AM or KGO 810 AM and local TV stations for further information.⁠ ⁠ Learn more at www.SMFD.org/LRAD | Southern Marin Fire District | Facebook
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 Reminder: At 12pm, October 5th, Long Range Acoustic Device (LRAD) emergency alert will sound throughout Southern Marin for its monthly test.⁠ ⁠ Please don't call 911 when you hear the sirens. Use 9-1-1 for life-threatening emergencies only. ⁠ ⁠ If you hear the siren at any other time, tune in to KQED 88.5 FM, KCBS 740 AM or KGO 810 AM and local TV stations for further information.⁠ ⁠ Learn more at www.SMFD.org/LRAD | Southern Marin Fire District | Facebook
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💡 Reminder: At 12pm, July 6th, Long Range Acoustic Device (LRAD) emergency alert will sound throughout Southern Marin for its monthly test.⁠ ⁠ Please don't call 911 when you hear the sirens. Use 9-1-1 for life-threatening emergencies only. ⁠ ⁠ If you hear the siren at any other time, tune in to KQED 88.5 FM, KCBS 740 AM or KGO 810 AM and local TV stations for further information. Learn more at www.SMFD.org/LRAD | Southern Marin Fire District
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