Ideal for ENG/EFP, DSLR Video, Broadcast-Quality Sound

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The Polsen ULW-16  is a 16-channel camera-mountable UHF wireless system designed to transmit audio up to 300'. Engineered to be exceptionally quiet, and with many professional features like headphone monitoring, line input, and frequency agility, the ULW-16 is ideal for EFP (electronic field production),DSLR, and many other video applications. 

With its impressive 105 dB signal to noise ratio, the ULW-16 delivers pristine audio transmission for broadcast-quality recordings. It has 16 channels to choose from to help avoid interference. Up to five systems (or more in optimum conditions) can be used simultaneously in the same location.

The transmitter features a variable-level control that adjusts the level of transmission. It’s also equipped with a line input that enables the transmission of devices such as an audio mixer. The receiver features an 1/8" line output and included XLR cable for professional cameras. It also includes a cable for DSLR and consumer camcorders that have a 1/8” mic input. A headphone jack and volume control allows you to monitor the transmission signal in real time at a comfortable volume. 

This ULW-16 system includes a PL-4 omnidirectional 0.20" lavalier microphone for flexible positioning options and excellent wind noise rejection. The included windscreen can be used to reduce vocal plosives (pops) and wind noise.

The system operates in the UHF 500 MHz bandwidth, assuring that it is “future proof” and meets current and known future FCC regulations.

With features like easy-to read LED indicators, front panel access to batteries, and included accessories to support operation, Polsen’s ULW-16 is designed with the user in mind. Professional and enthusiasts alike will benefit from its ease of operation, sensible ergonomics, and portability.

Key Features

Engineered for Versatility

  • The many professional features of the ULW-16 make it an ideal wireless system for a variety of production applications, including electronic field production (EFP), DSLR video, event coverage, training videos, and classroom or corporate presentations

Best-in-Class Sound Quality

  • The ULW-16 easily outperforms its competitors with a greater than 105 dB signal to noise ratio, and better than 95 dB of dynamic range for pristine audio transmission and output

Frequency-Agile System

  • The 16-channel ULW-16 wireless system allows operators to quickly and effortlessly switch channels in order to locate a clear channel

Headphone Monitoring with Level Control

  • Transmissions can be monitored at a comfortable level from the receiver's headphone output in real time, without the latency that often occurs when monitoring via a camera's headphone output

Omnidirectional Lavalier Microphone

  • The omnidirectional polar pattern is ideal for video applications because it offers flexible placement options, and allows for head movement without affecting the sound

Line-Level Output

  • The receiver features a line-level output for the best possible signal-to-noise ratio. Using the included 1/8" (3.5mm) male to XLR male cable, the ULW-16 receiver can be connected to a professional video camera, recorder, or other line-level device

Line to Mic Attenuator Cable

  • The included line to mic-level attenuator cable is designed to attach the output of the receiver to camcorders, DSLRs or other devices with a mic-level input

Variable Level Control

  • The variable level control on the transmitter assures that sufficient level is being transmitted to the receiver to achieve the best signal-to-noise ratio throughout the signal path

Portable Receiver

  • The receiver can be mounted onto a standard shoe mount of a DSLR or video camera

Compact and Lightweight

  • Weighing approximately 3 ounces, the transmitter can be easily concealed on a subject by attaching it with the included belt clip, or placing it in a pocket

Front-Panel Access to Batteries

  • Both the receiver and transmitter feature front-panel access to the battery compartment so you can change the batteries even when the system is counted and wired up

LED Indicators

  • The RF LED on the receiver illuminates indicating there is a signal on the selected channel. LED channel indicators make the channel number easy to see even in dim lighting conditions. The transmitter's TX LED glows red to indicate that the unit is transmitting

1/4"-20 Threaded Socket

  • The standard 1/4"-20 threaded socket provides a variety of mounting options

Included Accessories

  • The included tie clip provides a variety of discreet microphone placement options and can be used to attach the microphone to a collar, necktie, or costume, while the included wind screen reduces wind noise and vocal plosives (pops). The integrated belt clip secures the transmitter to the talent and allows it to be discreetly hidden under a garment or costume and the standard shoe mount with locking wheel easily and securely attaches to most cameras.

One-Way Communication Application

  • The ULW-16 can be used as a one-way voice communication system for stage directions and talent cueing

Future Proof

  • The ULW-16 system operates in the UHF 500 MHz bandwidth assuring that it is "future proof" and meets current and known future FCC regulations.

Protective Carrying Case

  • The ULW-16 wireless system includes a sturdy protective carrying case making transport effortless. Inside, custom foam enclosures secure the components and protect them from impact, and solid external construction will withstand the rigours of road use


Frequency Range
584.400 to 602.450 MHz
Number of Channels
Switching Bandwidth
25 MHz
Peak Deviation
±55 kHz
Total Harmonic Distortion
Operating Distance
>100' (30.5 m); 300' (91.4 m) in optimum conditions
Frequency Response
60 Hz to 80 kHz
RF Output Power
10 mW
Spurious Rejection
>55 dBc
Maximum Input Voltage
1,000 mV
1/8" (3.5 mm)
Power Supply
Two (2) AA batteries
Operating Time
Approximately 8 hours
4.4 × 2.6 × 1.1" (11.3 × 6.5 × 2.9 cm)
3.3 oz (94 g)
-102 dBm
Dynamic Range
>95 dB
Signal-to-Noise Ratio
>105 dB (A)
Image Rejection
56 dB
1/8" (3.5 mm) 1 kΩ
Power Supply
Two (2) AA batteries
Operating Time
Approximately 8 hours
4.4 × 2.6 × 1.4" (11.3 × 6.5 × 3.5 cm)
3.5 oz (100 g)
Back electret condenser
Polar Pattern
Frequency Response
20 Hz to 20 kHz
-45 dB ±3 dB
2000 ohm
Maximum SPL
135 dB
Dynamic Range
104 dB
Operating Voltage
1.5 - 12 VDC
1/8" (3.5 mm)
Head Diameter
0.20" (5.0 mm)
Polsen ULW-16 - 16 Channel Camera-Mount UHF Wireless Lavalier Mic System
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