Zaxcom DCiRX Digital UHF Receiver

The Zaxcom DCiRX is a digital UHF receiver that takes audio from one Zaxcom transmitter and a wired mic at the same time. It has a built-in recorder, automixer, and USB-C audio interface.

Its narrow band direct conversion design keeps nearby cell phones, walkie-talkies, and 2.4 GHz devices from interfering. A tracking front-end filter tunes in 1 MHz steps across 470 to 698 MHz, an autoscan finds a clear frequency, and a dropout compensator rebuilds any missing audio data.

Mic Input and Recording

The 3-pin LEMO input takes a 5 V lavalier or a balanced mic on 48 V phantom power. Alongside the mic, the receiver takes a mono or stereo Zaxcom transmitter.

The internal recorder writes up to three ISO tracks and an automix track to microSD as 32-bit float or 24-bit broadcast WAV files with timecode. It works as a backup recorder or as a stand-alone recorder for a plant mic or car rig.

To Camera

A balanced two-channel TA5 output runs from mic level to +12 dBu, and a locking 3.5 mm jack carries SMPTE timecode. Paired with a TRXCL5 camera link transmitter, the DCiRX sends wireless audio and timecode to the camera.

On cameras without phantom power, such as the ARRI Alexa Mini, Mini LF, or Alexa 35, it powers a shotgun mic and sends it to the camera along with the wireless channel.

USB-C Interface and IFB

Over USB-C it sends four channels with timecode to a computer, phone, or USB-C camera for podcasts and streaming. With the Blackmagic Camera ProDock and an iPhone 17 Pro or 17 Pro Max, it passes timecode received over UHF to the dock.

Tuned to a UHF IFB feed, it gives directors and crew low-latency monitoring on headphones. Three AA batteries run it for up to 7 hours on lithium-ion or 5 hours on NiMH, and USB-C powers it too.

Features

• Narrow band direct conversion UHF receiver, 470 to 698 MHz
• Tracking front-end filter in 1 MHz steps
• 3-pin LEMO mic input with 48 V phantom power
• 4-track microSD recorder: 3 ISO tracks and an automix
• 32-bit float or 24-bit WAV files with timecode
• Balanced TA5 output, mic level to +12 dBu
• 4-channel USB-C audio interface
• Locking headphone and timecode jacks
• Up to 7 hours on three AA batteries