TRXLT2 – Miniature Bodypack Transmitter

 Firmware | Manual

When Size Matters

The TRXLT2 is a brand new version of our smallest talent transmitter, the TRX900LT. The LT2 was totally re-designed on the inside with a brand new proprietary digital modulation giving it enhanced transmission distance and a wider tuneable frequency range.

Cover four blocks with one transmitter. The TRXLT2.5 which covers blocks 20 through 23 (512-614MHz) and the TRXLT2.6 covers blocks 23 through 26 (596 – 698 MHz).

The LT2 features internal timecode stamped recording and ZaxNet in a tiny low-cost system for all productions.

Designed to be lightweight and durable, the LT2 is housed in a high strength, impact resistant nylon polymer casing that provides protection from both corrosion and water damage.

100% digital transmission for audio quality that rivals a hard-wired system and are fully encrypted to eliminate the possibility of production audio interception and theft.


The LT2 is fully compatible with all Zaxcom wireless receivers and IFB transmitters.

The LT2 series works with ZaxNet, Zaxcom’s 2.4-GHz RF network that distributes remote control commands, timecode and IFB audio. With ZaxNet, one can remotely control transmitter
settings such as gain, frequency channel, transport controls and output power levels. When paired with an IFB100/200 and Deva or Fusion the units can also replay audio via a timecode reference giving production sound mixers the ability to replay and remix audio, creating a virtual multi-track playback and re-record system.

The transmitter also sends a Quality Control signal over ZaxNet, a lot of times when you’re micing someone you have to go to the cart to hear how it sounds. Now you can just have an ERX in your pocket and be able to listen to the mic right on the spot.

Also available by special order: TRXLT2.5S*** & TRXLT2.6S***
The “S” model is a stereo version of the LT2. The “S” model takes two lavaliere microphones into the single 3-pin LEMO connector. A stereo image is then wirelessly transmitted opening up unlimited possibilities for the enhancement of audio on programming delivered in 5.1 surround format.

***The Stereo version of the LT2 does NOT have NeverClip™***

Digital Modulation
Encrypted Audio
Intermodulation Resistant
Internal Backup Recording
Technical Details
RF Modulation: Proprietary Digital Method
TRXLA2.5 RF Frequency Range: 512 - 614 MHz
TRXLA2.6 RF Frequency Range: 596 - 698 MHz
RF Frequency Step: 100 KHz
RF Bandwidth: 200 KHz
Channel Separation: 500 KHz (700 KHz recommended)
Antenna Connector: 50 ? SSMA Female
Emission Designator: 180 KV2E
FCC Part: 74.861
Dynamic Range: 126 dB (Stereo model 106 dB)
Distortion: 0.002%
Frequency Response: Mode 0: 20 Hz to 16 kHz / T & M Mode 0.2 Hz to 16 kHz
High Pass Filter: Off or 30 to 220 Hz, Steps: 10 (6 dB Per Octave)
System Group Delay: 3.5 ms
Mic Power: 3.3 VDC
Mic Connector: 3-Pin Micro LEMO
Input Range: -60 to -30 dBu
Mic Impedance: 6.8 k ?
ADC Bit-Depth: 24 Bits
ADC Sampling-Rate: 48 kHz
Clock Accuracy: 1.54 PPM (1 Frame Out in 6 Hours)
Timecode Type: SMPTE
Timecode Frame-Rates: 23.98, 24, 25, 29.97NDF, 29.97DF, 30NDF, 30DF
Media: MicroSD Card (Flash Memory)
File Format: .ZAX
Recording Time: 96 Hours (16 GB Card)
RF Frequency Range: 2.403 to 2.475 GHz
RF Modulation: Digital Spread Spectrum
RF Frequency Step: 0.001 GHz (1 MHz)
RF Bandwidth: 1 MHz
Channel Separation: 2 MHz
Sensitivity: -96 dBm
Weight: 3.6 oz with Battery
Dimensions (H x W x D): 3.0? x 2.4? x .65?
Display: Graphic LCD
Power Output: 25 / 50 / 125 mW – Software Selectable
Battery Life: Up to 7 Hours with 2 Lithium AA at 125mW