TRX900 Digital Wireless Transceiver
The TRX900 is an encrypted digital wireless transmitter with optional internal backup recording and IFB. By incorporating an IFB receiver into the body of a traditional wireless transmitter, both functions are now combined in a package smaller than most transmitters on the market today.

TRX900 Standard Features:
- Fully encrypted audio transmission
- Built-in 2.4 GHz receiver to receive timecode and remote control signals from ZaxNet and/or IFB100
- Digital modulation wireless transmitter
- Superb audio quality that rivals a mic cable
- Digital drop-out protection
- 5 hour run time on single CR123 battery
- Graphic LCD display
- Integrated timecode reception
- Small and lightweight
- No inter-modulation – up to 50 transmitters, in the same frequency block, can be used together.
TRX900 Optional Features:
- Built-in IFB audio receiver
- 96 hour internal backup recording with timecode stamp
TRX900 Options:
![]() The MicroSD card slot on the TRX900 |
Internal Recording - Ordered as TRX901
The TRX900AA’s 96 hour, 24 bit internal loop-recording option is perfect for those times when there’s a lack of available frequencies or when drop-outs cannot be tolerated. The audio is timecode referenced, recorded on and played back from a removable MicroSD memory card that can be used in any standard SD card reader.
Audio can be recorded, played back and timecode referenced either manually or through remote control commands from the IFB100 transmitter.
The audio is automatically recorded full bandwidth as a .ZAX file. The included ZaxConvert file transfer software (available for both MAC and PC) utilizes sample rate conversion to obtain the sample rate and bit depth of choice when files are imported to your computer. There are two timecode stamped file types to choose from: BWF (Broadcast Wave Format) or MP3 (MPEG-1 Audio Layer 3). MP3 files are great for quickly transferring files over the internet to a transcription house.
Any number of versions of the same recording can be made from a single file.
IFB Audio Reception – Ordered as TRX10
The TRX900 internal IFB audio option adds the ability to receive IFB (confidence) audio directly on the bodypack via the built-in 2.4 GHz receiver. To monitor audio an EA100 or Stereo Adapter is required.
TRX900 Adapters & Accessories:
IFB Transmitter – IFB100
Stereo Adapters – STA100, STA150, STA042
Filter Antenna – FDP1 (Recommended for use with the TRX900AA & Stereo Adapter)
Earpiece Adapter – EA100
Timecode Adapter – TCA100
Mute Switch Adapter – MSA100
TRX900AA Adapters & Accessories offered by Areitec:
Pico482 – Stereo Phantom power adapter
The Pico482 is an integrated transmitter mounting system that delivers true 48V from a single 9V battery, transforming your TRX900AA into a stereo boom transmitter.
Please visit the news page on Areitec’s website for details and ordering information:
http://www.areitec.fr/news.html
| Transmitter | |
| RF Power output | 10 / 25 / 50 mW – Software selectable |
| RF Modulation | proprietary digital method |
| RF Frequency Range | 518.0 to 872.0 MHz (blocks are 20 to 36 MHz wide) |
| RF Frequency Step | 100 KHz |
| RF Bandwidth | US Mode: 200 KHz |
| Euro Mode: 125 KHz | |
| Channel Separation | 500 KHz (700 KHz recommended) |
| Antenna Connector | 50-ohm SSMA female |
| Emission Designator | 180 KV2E |
| FCC Part | 74.861 |
| Transmitter Audio | |
| Dynamic Range | 106 dB |
| Distortion | 0.001% |
| Frequency Response | Mode 0: 20 Hz to 16 kHz |
| T&M Model: 0.2 Hz to 16 kHz | |
| High pass Filter | Off or 30 to 220 Hz, step: 10 (6 dB per octave) |
| System Group Delay | US Mono mode: 3.6 ms |
| Euro mode: 6 ms | |
| Stereo mode: 6 ms | |
| Mic Power | 3.3 VDC |
| Mic Connector | 3-pin micro-LEMO |
| Input Range | -60 to -30 dBu |
| Impedance | 4.7 k ohms |
| ADC Bit-depth | 24 bits |
| ADC Sampling-rate | 48 kHz |
| Timecode Reader / Generator | |
| 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 |
| Recording (optional) | |
| Media | MiniSD card (Flash memory) |
| File Format | .ZAX |
| Recording Time | 96 hours (16 GB card) |
| IFB Receiver (audio portion optional) | |
| 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 |
| DAC Bit-depth | 24 bit |
| DAC Rate | 48 kHz |
| Frequency Response | 20 Hz to 12 kHz |
| Output Impedance | 8-ohm minimum |
| Physical | |
| Weight | 4.0 oz. (113 grams) with battery |
| Dimensions (H x W x D) | 2.3″ x 2.3″ x .65″ (58 mm x 58 mm x 17 mm) |
| External Power (STA100/150) | 9 to 18 VDC @ 125 mA |
| Internal Power (Battery) | Up to 5 hours @ 50 mW (one CR123) |
| Display | Graphic LCD panel |
All specifications are subject to change without notice.Zaxcom Digital Wireless is protected under patent #’s: 7,711,443 & 7,929,902
