See Zaxcom president Glenn Sanders' presentation on wireless receivers.

Manufacturer's Description:
The RX900S Stereo ENG Receiver is compatible with the TRX900, TRX900AA, TRX990 and all other Zaxcom Digital Wireless Transmitters. It has low power consumption and can be powered either internally with 4 AA Lithium batteries or externally with a 12V power supply.

Specifications:
Size: 1.25" x 4.75" x 3.25"
Power: Internal Battery: 4 AA w//approximate run time of 4 hours
External: 12V @ 200 mA
Microphone level: -40 dBm
Line level: -6 dBm
Analog Headroom: 20 dB
Analog D to A: 24 bit
Analog Audio Output Connector: balanced 5 pin XLR
AES I/O: not available
Maximum Distortion: .01%
Antenna connector: SMA Female
Receiver Type: True diversity single conversion Digital Demodulator
Frequency Stability: +/-2 ppm
Frequency Ranges: 518 - 870 MHz (must be ordered in 25 MHz blocks)
System Dynamic Range: 105 dB

FCC Consumer Alert
Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system without a license is subject to certain restrictions: The system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device. Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1–888–CALL–FCC (TTY: 1–888–TELL–FCC) or visit the FCC's wireless microphone Web site.

If you're a licensed Part 74 operator, you may continue to use 50mW and greater wireless systems under certain conditions. Eligible parties include a person or organization engaged in the production or filming of motion pictures or television, so, to the best of our knowledge, this includes below the line crew. More information on also can be found here. To apply for a license, visit www.fcc.gov/Forms/Form601/601.html

If you have any questions about these usage restrictions, please give us a call at 1-866-GOTHAM-8 or e-mail info@gothamsound.com.