The D4 digital wireless system provides 2 or 4 channels of flawless audio
wirelessly with up to 1200 ft of range. The system is designed for line level
analog audio and AES/EBU digital audio signals, and operates at 24 bits and
48kHz sample rate.
The D4 system operates on four selectable 4.2 MHz operating channels within
the license and DTV-free ISM band between 902 and 908 Mhz. Each channel carries
four separate audio signals, digitally multiplexed within a common carrier.
Front panel controls enable all setup and monitoring using an LCD interface.
RF and audio levels and currently selected modes are displayed in the main
The compact size and light weight make the D4 extremely portable - ideal for
use in television and film production. A typical application will be for “bag
systems” along with a portable mixer and several wireless microphone receivers
in a over-shoulder soft case. The D4T transmitter relays up to 4 audio channels
from the bag back to one or more D4R receivers mounted on cameras.
The system will operate in a fully digital input/output mode with less than
1ms of latency, or can be configured in various combinations of digital or
analog inputs with digital or analog outputs.
- 2 operation
- DTV-free unlicensed ISM band 902-928 MHz
- Digital or analog inputs; digital or analog outputs
- 24-bit, 48kHz audio
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
More information on also can be found here.
To apply for a license, visit
If you have
any questions about these usage restrictions, please give us a call at
1-866-GOTHAM-8 or e-mail