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Digital Reference DR-3500 Instrument Wireless System  

Product #276510

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Item Note:

This product has been discontinued but may be available as a Open Box item.

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See All Digital Reference Instrument Wireless Systems
Digital Reference

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.

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 FCCs wireless microphone website at:

  • 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

DR-3500 Instrument Wireless System Specifications:

  • 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
  • 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 dBV (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)
  • 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)
review resources


by PowerReviews
Digital ReferenceDR-3500 Instrument Wireless System

(based on 1 review)

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Reviewed by 1 customer

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(3 of 3 customers found this review helpful)


Good Unit for the Cash


from Plano Texas

Comments about Digital Reference DR-3500 Instrument Wireless System:

Great unit hasn't dropped out even once and has a good range. The only thing I didnt like is the flimsy belt clip on the remote pack and the fact that the pack is made of plastic. That makes me a little nervous. Have owned it for about one month and no problems or breakage so far.

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