Copyright© 2009 Tower Communication & Automation, Inc. Reaching Beyond The Competition.” Trunked and Conventional Radio Systems - IP25™ Infrastructure Systems provide a secure,      interoperable, and flexible Voice over Internet     Protocol (VoIP) solution for building out a Project 25    network for first responders. Portable and Mobile Radios - Used throughout the world by military, police, fire,      paramedics, and homeland security personnel. Voice Encryption - Voice privacy modules for most any brand and      model of analog two-way radio to prevent unwanted   eavesdropping on critical communications. EFJ’s     scramblers are used in 10,000 systems in over 120   countries throughout the world. Latest in Technology - All P25 Compatible ES series portable and mobile     radios now have a TDMA option. - All digital radios come equipped with the AMBE+2     vocoder. - The 53SL ES radio and 51SL ES is WyoLink   compatible and approved. EFJohnson focuses on innovating, developing and marketing the highest quality secure communications solutions to organizations whose mission is to protect and save lives. Click any for a detailed spec sheet. Or click on a product to see a larger version.