TRXLA3 Transmitter

The TRXLA3 is one of Zaxcom's first transmitters with a brand new modulation, Zaxcom High Density (ZHD). ZHD modulation allows for up to 10 channels of wireless to be operated in one MHz of frequency spectrum space. Like its predecessor, the TRXLT3 has built-in backup recording with time code, NeverClip™ for superior dynamic range and is fully encrypted.

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:

• With wireless receivers in Mono or XR Modes: as close as 400 KHz channel to channel
• With the QRX235, QRX200 or QRX212 in ZHD mode: as close as 200 KHz channel to channel (300 KHz recommended)
• With the upcoming QRX335, QRX300 or QRX312 in ZHD mode: as close as 100 KHz channel to channel

The TRXLA3.5 covers blocks 20 through 23 (512-614MHz) and the TRXLA3.6 covers blocks 23 through 26 (596 – 698 MHz). It’s lightweight and durable, housed in a high strength, impact resistant nylon polymer casing. The LA3 utilizes 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 to 100 mW while rolling and powering down to 25 mW while on standby.

The LA3 works 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.

The LA3 sends 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.

The “S” model is a stereo version of the LT3 which takes two lavalier 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 LT3 does NOT have NeverClip™ and ZHD will not function in Stereo Mode.

Watch Glenn Sanders talk about the ZHD technology here: