The SK 50 and SK 250 are miniature tunable bodypack transmitters. The SK 50, with 50mW output power, is suitable for use in multi-channel theater and studio applications. The SK 250 has a 250 mW output for long range applications such as electronic news gathering (ENG), sports events, or surveillance. LEMO connectors are used to connect the microphone and antenna, screening out external interference. Uniquely-keyed pin configurations prevent inadvertent connection to the wrong terminal. A wide variety of audio input adapter cables and lavalier microphones, such as the MKE 2-4, are available. Frequency agility, ruggedness, reliability, along with Sennheiser's unsurpassed audio quality make this the perfect solution for touring performances, venues located in RF-saturated areas, or any application that requires maximum flexibility. Frequency range: 450 - 580 MHz