The Motorola ATEX Ex Antennas are specifically designed for use with Motorola radios, including the DP4401Ex and DP4801Ex models. These black antennas are compatible with portable/handheld radios and provide reliable communication equipment for commercial/PMR radio systems. With a focus on quality and compatibility, these Motorola ATEX Ex Antennas ensure optimal performance for your radio communication needs. UHF.