 MELVILLE, N.Y.--BUSINESS WIRE--November 11, 2021-- Comtech Telecommunications Corp. NASDAQ: CMTL, a leading global provider of next-generation 911 emergency systems and secure wireless communications technologies, announced today that it will present at the Ladenburg Thalmann Virtual Technology Expo 2021 on Thursday, November 18, 2021 at 9:00 a.m. ET. Comtech management will provide an overview of the Company and its business opportunities. The Company will also conduct virtual one-on-one m 