MTP51-JP is an ultra-compact bodypack transmitter for professional wireless microphone applications in Japan. It operates 1240–1260 MHz with switchable RF outputs of 10, 20 and 50 mW. The unit features ENR and ENC noise suppression, a hardware limiter, infrared setup, 25 kHz step PLL tuning, and compatibility with legacy Wisycom receivers. It accepts LEMO or Microdot (DPA) inputs and is powered by one AA cell, weighing ~72 g without batteries.