TRX900AA Digital Recording Wireless Transceiver

TRX900AA Transceiver

TRX900AA Transceiver

The TRX900AA is an encrypted digital wireless transmitter with optional internal backup recording and IFB.

TRX900AA 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
  • 6 to 8 hour run time on two AA batteries
  • 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.

TRX900AA Optional Features:

  • Built-in IFB audio receiver
  • 96 hour internal backup recording with timecode stamp

TRX900AA Software Options:

Internal Recording - Part #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 – Part #TRX10
The TRX900AA 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.

TRX900AA 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:

TRX900AA Specifications:


TRX900AA RF Power Output: 10 / 25 / 50 mW – Software Selectable
RF Modulation: Proprietary Digital Method
RF Frequency Range: 518.0 to 872.0 MHz (Typical Blocks are 36 MHz wide)
RF Frequency Step: 100 KHz
RF Bandwidth US Mode: 200 KHz
RF Bandwidth EU Mode: 125 KHz
Channel Separation: 500 KHz (700 KHz recommended)
Antenna Connector: 50 Ω 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 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: US Mono Mode: 3.6 ms / EU 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 Ω
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

Internal Recording – Optional, Part #TRX901
Media: MicroSD Card (Flash Memory)
File Format: .ZAX
Recording Time: 96 Hours (16 GB Card)

2.4 GHz ZaxNet Receiver – Audio Portion Optional, Part #TRX10
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: 4.0 oz.. (113 grams) with Battery
Dimensions (H x W x D): 3.38″ x 2.3″ x .65″ (85 mm x 58 mm x 17 mm)
Display: Graphic LCD

TRX900AA: Up to 8 Hours with 2 Lithium AA
External (via Stereo Adapter): 9 to 18 VDC @ 125 mA

All specifications are subject to change without notice.

Zaxcom Digital Wireless is protected under patent #’s: 7,711,443 & 7,929,902