Two-way radios have been around a long time.  There’s a reason for that.  Radios have and continue to provide a useful function for many.  Hobbyists use them for fun.  Boaters use them for safety.  Businesses use them to streamline crew communications.  And radios are a vital piece of the public safety personnel’s communication system. Before … Continue reading What do you mean by Simplex, Duplex, Half Duplex, Full Duplex?