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 website at
http://www.fcc.gov/cgb/wirelessmicrophones.
A major advance in affordable wireless.
The Digital Reference DR-3500 Instrument Wireless System is a low-cost UHF system with many high-end features. Automatic frequency scanning, clear sound, dependable performance, true diversity operation, Tone Lock squelch for interference rejection, soft touch controls, an LCD display, and both balanced and unbalanced outputs. All 10 user-switchable channels are compatible for easy use with multiple systems. System includes receiver, rackmounting kit, instrument cable, and bodypack transmitter.
With our
Guaranteed Lowest Price, you can be assured of complete satisfaction and the lowest available price, or your money back!
Digital Reference DR-3500 Instrument Wireless System Features:
- Serious advances in affordable professional wireless
Clear sound quality and rock-solid, dependable performance
Automatic frequency scanning finds an open channel at the touch of a button
All 10 user-switchable channels are compatible for easy use with multiple systems; no confusing frequency groups
True Diversity operation selects the better signal from the 2 receiver sections, reducing dropouts
Tone Lock tone squelch system prevents interference
Rugged metal half-rack receiver with soft-touch controls and LCD display featuring RF and AF metering
Balanced XLR and unbalanced 1/4" output jacks enable use with a wide variety of audio gear
Includes rackmount kit and detachable UHF antennas
Ground-lift switch helps eliminate audible hum caused by ground loops between the sound system and receiver
Digital Reference DR-3500 Instrument Wireless System Specifications:
- OVERALL SYSTEM
Operating Frequency UHF band, 656.125 MHz to 678.500 MHz
Number of Channels 10 total
Frequency Stability ±0.005%, Phase Lock Loop frequency control
Modulation Mode FM
Normal Deviation ±5kHz
Operating Range 300' typical
Operating Temperature Range 41° F (5° C) to 113° F (45° C)
Frequency Response 100Hz to 15kHz
RECEIVER
Receiving System Dual independent receivers, automatic-switching diversity
Image Rejection 55 dB nominal, 50 dB minimum
Signal-to-noise Ratio >100 dB at 40kHz deviation (A-weighted), maximum
modulation 40kHz
Total Harmonic Distortion <1% (±10kHz deviation at 1kHz)
Sensitivity 20 dBµV (S/N 60 dB at 5kHz deviation, IEC-weighted)
Intermediate Frequency 65.75MHz, 10.7MHz
Audio Output (AF Level set at "0") Unbalanced: 25 mV (at 1kHz, ±5kHz
deviation, 100k ohm load)
Balanced: 12.5 mV (at 1 kHz, ±5kHz deviation, 100k ohm load)
TRANSMITTER
RF Power Output 12mW
Spurious Emissions Under federal regulations
Input Connections High impedance, low impedance, bias
Batteries (not included) Two 1.5V AA alkaline
Current Consumption 150mA typical
Battery Life Approximately 9 hours (depending on battery type and use
pattern)
Dimensions 2.60" (66.0 mm) W x 3.63" (92.3 mm) H x 0.89" (22.5 mm) D
Net Weight (without batteries) 2.82 oz (80 grams)
(Based on 
Based on 
