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Direct Conversion in Zaxcom Receivers Explained

Innovating Direct Conversion Technology: A White Paper on the Zaxcom VRX1 VHF IFB Receiver Version 1.0, February 13, 2024 Click to download a PDF version AbstractIn February 2024, Zaxcom released a new VHF IFB audio receiver called VRX1, designed to monitor audio and cue talent in the film, television, and broadcast industries. The portable, belt-worn […]

White Papers

ZHD Modulation

Zaxcom High Density modulation mode is used to fit a large number of wireless signals into a relatively small frequency spectrum, ideal for reflective environments.

Product Feature

Timecode

Timecode is a sequence of numeric codes generated at regular intervals and is used for synchronization, logging, and identifying recorded material in film, video, and audio production. All Zaxcom mixer/recorders recorders, digital recording wireless transmitters, ZFR miniature recorders, ERX receivers, QRX w/QIFB, and URX receivers feature fully functional timecode readers and generators. The timecode reader in […]

Product Feature

ZaxNet

ZaxNet is a wireless network that runs on a user selectable 2.4 GHz RF signal. ZaxNet is used for the distribution of timecode, IFB audio and metadata. That same ZaxNet signal is also used to control Zaxcom digital wireless transmitters. ZaxNet gives you the ability to control any Zaxcom transmitter remotely, so there is no […]

Product Feature

ZaxNet QC Audio

The TRX & ZMT transmitters and ZFR miniature recorders can transmit their own audio via its built-in ZaxNet 2.4GHz transmitter. That audio can be monitored by an ERX receiver tuned to the same ZaxNet frequency of the transmitter. Why is this cool? Now you can mic up talent and listen to how they sound without having […]

Product Feature

MARF

MARF stands for Mobile Audio Recording Format MARF is Zaxcom’s lossless fault tolerant recording system. It’s a robust recording system where the recorded digital files don’t need to be closed or finalized. If power is lost during recording for any reason – dead batteries, prematurely pulled card, recorder dropped in a lake (yes, that’s happened) […]

Product Feature

NeverClip™

NeverClip™ incorporates two separate analog to digital converters working in conjunction with each other to give you up to an unprecedented 139dB of dynamic range depending on the product. The signals from the two converters are combined in the digital domain to provide the entire, unclipped dynamic range of the units audio input(s). The full dynamic range […]

Product Feature

PreRecord

Prerecord keeps incoming audio in an internal buffer, so if you press the record button up to 10 seconds too late, you’ll still have your audio. You can choose to buffer up to 10 seconds of audio in Nova, Nomad, and Deva. From the point the recorder is powered up, any sound coming in from […]

Product Feature

Intermodulation Resistant

Intermodulation is interference that occurs when the RF from multiple transmitters that are in close proximity to each other mix together in the transmitters amplifier and combine their outputs. It can even occur if you’re running just two transmitters on set or in a sound bag. Intermodulation is undesirable because it creates spurious emissions which can […]

Product Feature

Internal Recording

As a personal Bodypack recorder If you ever find yourself in a place you can’t use RF, you can turn the transmitter portion of your wireless off and use it as a standalone recorder. This comes in very handy more often than you think – government buildings, airplanes, overcrowded places, etc. It’s also ideal for […]

Product Feature

Digital Modulation

Zaxcom Digital Recording Wireless uses 100% digital modulation for audio quality sounding just like a hard wire. Zaxcom transmits its audio as 1s and 0s in a 100% digital proprietary form with no companding altering the audio content, this results in an incredibly high quality reproduction of the original audio under all circumstances. Conventional FM […]

Product Feature

Effects

Zaxcom recorders provide powerful software based effects on every channel. Equalization All of Zaxcom recorders have high pass and two notch filters per channel which are an excellent tool to remove noises such as 60/120Hz hum, lighting ballast noise, motors, wind noise and more. Deva and Fusion add 3-band shelving equalization. The EQ is phase accurate […]

Product Feature

Encrypted Audio

Traditional FM wireless audio can be hacked into and listened to by any commercially available scanner.  In some situations this isn’t an issue, but there are times where privacy is necessary. For example paparazzi with an inexpensive device can listen in on your set. Or in the case of some corporate settings where there may […]

Product Feature

Automixer

An Automixer is software that blends multiple channels of audio that can be difficult to impossible to mix with mechanical faders operated by a human. When a speaker starts to talk, the automixer automatically opens its microphone and adds it to the mix. Then when a speaker stops talking, their microphone will be attenuated “closed” […]

Product Feature

Digital wireless overview

All of Zaxcom’s wireless microphone system uses only 100% digital modulation, this results in audio quality superior to any analog or digital hybrid FM wireless system. Zaxcom transmits its audio as 1s and 0s in a 100% digital form so no companding is needed to alter the audio content; this results in a much higher […]

Tech Guides

ZaxNet confidence monitoring

Zaxcom TRX transmitters and ZFR miniature recorders have the ability to transmit its own audio via its built-in ZaxNet 2.4GHz transmitter. That audio can be monitored by an ERX receiver tuned to the same ZaxNet frequency of the transmitter. The purpose of this is for confidence monitoring. So you can now mic up talent and listen […]

Tech Guides

Intermodulation

Intermodulation occurs when the RF from multiple transmitters, in close proximity to each other, mix together in the transmitters amplifier, and combine their outputs. Intermodulation can occur even if you are running just two transmitters on set, or in a sound bag. Intermodulation is undesirable because it creates spurious emission which can greatly interfere with reception […]

Tech Guides

The many uses of an IFB200

When designing the IFB200 we wanted to pack as many useful features as we could into as small of a unit as possible. After lots of tinkering we came out with something that we are very proud of. As far as the physical unit we made it lightweight, small and we paid special attention to the […]

Tech Guides

Maxx RF spray modification

Maxx RF spray modification – issued 12/17/2013 It’s been reported that in some rare instances Maxx’s are radiating RF energy and interfering with wireless microphone receivers in a sound bag.  If this is effecting your Maxx the following modification will eliminate the issue. This mod is only necessary if you’re experiencing interference. Step 1: Disassemble […]

Tech Guides