ZMT3 Miniature Transmitter

Block 20-23 (512 - 614MHz)


  • This item has been discontinued and replaced with the ZMT4. It is still available for rent.
  • 25/50/75 mW switchable output
  • 5.5 hour run time (at 50 mW w/o PowerRoll)
  • 100 mHz tuning range
  • 128 dB dynamic range
  • Digital modulation
  • Encrypted audio
  • Intermodulation resistant
  • Internal backup recording to microSD card
  • MARF recording format
  • NeverClip
  • Built-in time code reader and generator
  • ZaxNet
  • ZaxNet QC audio
  • ZHD modulation

Consumer Alert

Starting in 2017, the 617-652 MHz and 663-698 MHz frequencies are being transitioned by the Federal Communications Commission (FCC). Users of wireless microphone devices that operate in any portion of those frequencies must cease operating on these frequencies no later than July 13, 2020. In addition, users of this device may be required to cease operations earlier than that date if their operations could cause harmful interference to a 600 MHz service licensee’s wireless operations on these frequencies. For more information, visit the FCC’s wireless microphone website at or call the FCC at 1-888-CALL-FCC (TTY: 1-888-TELL-FCC).

Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device.