The Zaxcom ZMT3 miniature wideband transmitters are extremely lightweight and compact, weighing in at approximately 1.5" x 2.3" x 0.5" (about the size of a Zippo lighter) and 2.2 oz. Despite their incredibly low profile, they require almost no compromises, sharing most of the features of its larger siblings, including built-in backup recording with time code, full encrytion, and Zaxcom High Density (ZHD) modulation.
The ZMT3-Phantom adds selectable phantom power in 12, 24, 32 and 48V. It provides 128 dB dynamic range with no limiting or compression distortion and its internal battery lasts for up to 5 hours of run time in 48V depending on the microphone used.
ZMT3s also have the capability to output audio or time code for jamming through the mic connector, an A-D converter with a 108 dB dynamic range (~5dB wider than previous models), and a removable screw on top to allow for mounting or hanging. A standard rechargable Fuji NP-50 or compatible battery (sold seperately) powers the unit.
Note: the video below erroneously says that the ZMT3-Phantom has Neverclip. Please be aware that this is not the case.
ZHD modulation allows for up to 10 channels of wireless to be operated in one MHz of frequency spectrum space. The wireless signal is only 50 KHz wide and can be spaced as close as 100 KHz channel to channel allowing up to sixty channels of ZHD wireless in a single 6 MHz American television channel. The new modulation is ultra efficient resulting in incredible transmission range.
The ZHD transmitters are capable of running all existing mono Zaxcom modulations maintaining compatibility with all currently produced Zaxcom receivers. ZHD modulation conforms to all currently proposed FCC regulations for spectrally efficient wireless transmission.
Channel spacing varies based on the receiver you pair it with:
The ZMT3.5 covers blocks 20 through 23 (512-614MHz) and the ZMT3.6 covers blocks 23 through 26 (596 – 698 MHz). It’s lightweight, water resistant, and durable, housed in a high strength, impact resistant nylon polymer casing. It's designed efficiently for an extremely low heat output.
The ZMT3s utilize Zaxcom’s battery saving feature PowerRoll™ to automatically adjusts the transmitter output power based on the record status as sent via ZaxNet boosting the output power level up while rolling and powering down while on standby.
The ZMT3s work with ZaxNet, Zaxcom’s 2.4-GHz RF network that distributes remote control commands, time code and IFB audio. With ZaxNet, you can remotely control transmitter settings such as gain, frequency channel selection, transport controls and output power levels. When paired with an IFB100/200 and Deva or Fusion, the units can also replay audio via a time code reference giving production sound mixers the ability to replay and remix audio, creating a virtual multi-track playback and re-record system.
ZMT3s send a Quality Control audio signal over ZaxNet so you can use an ERX to listen to a lavalier right on the spot without returning to the cart.
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 www.fcc.gov/wireless-microphones-guide 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.
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