General Description

The UR3 is compatible with any wired XLR microphone and is an essential component for professional field and media production applications. It is comfortable to hold, features a back-lit display, and the audio level and power indicator LEDs are discreetly hidden.


  • UHF-R Audio Reference Companding
  • Wide-band tuning (region specific)
  • Smart, ergonomic industrial design
  • Selectable +12V/+48V phantom power
  • Sweepable high-pass filter
  • Programmable preset list with copy/paste to other UR3s
  • Selectable mic/line input
  • 10/50 mW RF power (region specific)
  • Discretely located audio and battery life indicators
  • IR sync

UR3 Plug-on Transmitter

① Joystick

Enter, exit and scroll using the joystick

② XLR Connection

Connects to any XLR wired microphone or device output

③ Power LED

Tri-colored LED, green, amber and red

④ Audio LED

Tri color LED for audio settings, red is peak

⑤ IR Window

For transmitting settings from receiver to transmitter

⑥ Battery Compartment and Battery Cap Retainer

Requires 2 AA batteries. Turn cover counterclockwise to open

⑦ Power Switch

Press on, press and hold to turn off


  1. Install batteries and turn power on.
  2. Select the appropriate level, mic or line, to match the audio signal source: AUDIO > SENS/GAIN > SENS
  3. Plug into an XLR microphone or the output of an audio device.
  4. Perform a sound check: Adjust the gain until the audio LED peaks red and flickers amber:


Syncing with a UHF-R Receiver

Align IR windows with a UHF-R receiver and press sync on the receiver. The transmitter displays SYNC SUCCESS.


Use the joystick for navigating and setting values.

Joystick Controls

RF Settings

Use the RADIO menu to adjust the following RF settings:



Adjusts group, channel or frequency.


Selects 10 mW or 50 mW power level (region specific)


Disables RF transmission. RF OFF appears on home screen.

ENABLE RF (if disabled)

Enables RF transmission

Audio Settings



Adjusts input level to match audio signal source.

MIC: For microphones or mic-level outputs

LINE: For line-level outputs.

MIC W/ PAD: Applies a 17 dB pad for additional attenuation when needed for high output microphones.

Note: For the best signal-to-noise performance, the pad should only be used when the MIC setting does not provide enough attenuation before clipping.


Adjusts audio input to the transmitter.


Adds phantom power for condenser microphones. Select 12V or 48V as required for the microphone.


High-pass filter. Scroll up to turn on the filter and set the low-frequency rolloff in Hz. (Scroll all the way down to turn off.)

Utility Menu



Locks the transmitter to prevent changes to settings.


Accesses the preset list.


Changes the home screen display format.


Sets battery type for more accurate battery life metering.


Adjusts display contrast (press up/down).


Restores the factory default settings.

Locking and Unlocking the Transmitter

To lock the transmitter, select UTILITIES > LOCK .

To unlock the transmitter:

  1. From the home screen, hold ENTER to the right for 5 seconds or until UNLOCK? appears.
  2. Push ENTER again.

    An on-screen key appears showing the joystick sequence to unlock the transmitter.

  3. Follow the pattern to unlock the transmitter (up, down, left, right).

Power On Shortcuts

RF Off

Use this to turn on the transmitter without transmitting RF. This allows you to change frequency settings on the transmitter without accidentally interfering with a frequency being used by another transmitter.

  1. Hold the joystick to the left (EXIT), power on the transmitter.

    The home screen displays RF OFF.

  2. Change and save your frequency settings as you normally would – the transmitter will not broadcast.
  3. To transmit RF, power the transmitter off or turn the RF on thru the main menu, MAIN MENU > RADIO > ENABLE RF .


Use this shortcut to power on the transmitter with the interface locked. This prevents accidental changes to transmitter settings.

  1. While holding the joystick to the right (ENTER), power on the transmitter.

    The home screen displays the lock icon.

  2. To unlock the transmitter, hold the joystick to the right (ENTER) for 5 seconds and follow the on-screen instructions.

Microphone Presets Menu

The transmitter holds up to 10 microphone presets. Use this menu to access a list, add, delete presets, or to copy and paste a preset list. Use the list submenu to set, modify or delete selected presets.

Note: The UR3 is shipped with an empty preset list.

Access the preset menu: UTILITIES > MIC PRESET


Enters the LIST submenu.


Add a new preset.


Deletes all presets.


Copy and paste the entire preset list to another UR3.

Accessing Microphone Presets

Access the preset list: UTILITIES > MIC PRESET > LIST

  1. Scroll down to select a preset.
  2. Press ENTER to access the menu for selected preset.

List Submenu

Use the list submenu to set, modify, or delete presets.

  1. Access the preset list:


  2. Scroll down to select a preset.
  3. ENTER to access the menu for the selected preset.


Activates the selected preset.


Modify the selected preset.


Deletes the selected preset.

Modify Presets

To change or modify the presets, you must enter the microphone preset submenu: UTILITIES > MIC PRESET > LIST and select a preset. From the sub-menu you can set, modify, or delete the setting.

Use the joystick to edit values:

ENTER: move to the next value.

UP/DOWN: edit the selected value.

EXIT: exit the preset.

To exit and save: Continue to scroll right, through all fields, until PRESET SAVED appears.

To edit the eight-character name:

  1. Highlight the preset name and press the joystick down.
  2. Scroll up/down to change the character.
  3. Scroll right to move to the next character.
  4. To exit, continue to scroll right past the last character.

Copy and Paste Preset List

Use COPY/PASTE to transfer the mic preset list from one plug-on transmitter to another. This function can be used between different transmitter frequency bands.

  1. Highlight COPY/PASTE from the mic preset menu on both transmitters. ( UTILITIES > MIC PRESET )

    Important: COPY/PASTE must be highlighted on both transmitters.

  2. Algn the transmitter IR windows and press ENTER on the source transmitter (the transmitter you want to copy from).
  3. The display shows SUCCESS on both transmitters after transferring the list.

Frequency Range and Transmitter Output Power

BAND FREQ (MHz) Nominal Output Power (mW)*
G1 470-530 10/50
G1E 470-530 10/50
H4 518-578 10/50
H4HK 518-565 10
H4E 518-578 10/50
J5 578-638 10/50
J5E 578-638 10/50
J5HK 578-638 10
K4E 606-666 10/50
L3 638-698 10/50
L3E 638-698 10/50
M5E 694-758 10/50
P8 710-790 10/50
P9 710-787 10/50
Q5 740-814 10/50
MA24 779-806 10
R16 794-806 10/50
R18 794-806 10
R9 790-865 10/50**
MJBX 806-810 10
X2 925-932 10
X1 944-952 10/50

* conductive into 50 ohms

**10mW only from 863-865 MHz

NOTE: This Radio equipment is intended for use in musical professional entertainment and similar applications. This Radio apparatus may be capable of operating on some frequencies not authorized in your region. Please contact your national authority to obtain information on authorized frequencies and RF power levels for wireless microphone products.

Australia Warning for Wireless

This device operates under an ACMA class licence and must comply with all the conditions of that licence including operating frequencies. Before 31 December 2014, this device will comply if it is operated in the 520-820 MHz frequency band. WARNING: After 31 December 2014, in order to comply, this device must not be operated in the 694-820 MHz band.



FM (45 kHz max. deviation)

Frequency Range

470 – 952  MHz*

Tuning Bandwidth

up to 80 kHz*

Antenna Type


Note: UR3 and attached microphone act as the antenna

Carrier Frequencies

up to 3200, tunable increments: 25  kHz*

RF Output Power

Selectable: 10  mW, 50 mW max.*

Power Requirements

2 LR6 AA batteries, 1.5 V, alkaline

Battery Life

typical, alkaline

without phantom power, 10 mW 10 hours
with phantom power, 50 mW 3 to 4  hours

frequency band dependent

Sensitivity Settings

mic, line

Gain Adjustment Range

−10 to +20 dB


32  kHz

Frequency Stability


Spurious Radiation

below carrier, typical

75 dB

Equivalent Input Noise

−127.0 dBV A-Weighted (audio front end)

Maximum Audio Input Level

at 0 dB gain setting

LINE setting +24 dBV
MIC setting −21 dBV

Differential Input Impedance

LINE setting 6 kΩ
MIC setting 3 kΩ

Frequency Response

+1.5 dB, −3 dB, through a UR4 receiver

35 Hz–17 kHz

Overall system frequency response depends on microphone element and receiver.

High Pass Filter

Two-pole (12 dB per octave), cut off frequency selectable from 40 to 240 Hz


1 kHz sine wave at 6 dB below clip, through a UR4 receiver


System Dynamic Range

A-weighted, typical

through a UR4 receiver LINE setting 107 dB
MIC setting 105 dB
through a UR5 receiver LINE setting 102 dB
MIC setting 100 dB

Audio Input

Female XLR Connector, 1=ground, 2=hot, 3=cold

Phantom Power


+48 V 48 V (±4 V) , 7 mA max.
+12 V 12 V (±1 V) , 7 mA max.


196 g (6.9 oz.), with batteries


117 mm x 36 mm x 44 mm (H x W x D)

*varies by region

Information to the user

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

  • Reorient or relocate the receiving antenna.
  • Increase the separation between the equipment and the receiver.
  • Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
  • Consult the dealer or an experienced radio/TV technician for help.

Note: EMC conformance testing is based on the use of supplied and recommended cable types. The use of other cable types may degrade EMC performance.

Changes or modifications not expressly approved by the manufacturer could void the user’s authority to operate the equipment.

WARNING: Danger of explosion if incorrect battery replaced. Operate only with AA batteries.

WARNING: Battery packs shall not be exposed to excessive heat such as sunshine, fire, or the like.


Meets requirements of the following standards: EN 300 422 Parts 1 and 2, EN 301 489 Parts 1 and 9, EN60065.

EN 300 422 Parts 1 and 2 EN 301 489 Parts 1 and 9 EN60065

Certified under FCC Part 74.

Certified by IC in Canada under RSS-123 and RSS-102.

This device complies with Industry Canada licence-exempt RSS standard(s). Operation of this device is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

The CE Declaration of Conformity can be obtained from Shure Incorporated or any of its European representatives. For contact information please visit

The CE Declaration of Conformity can be obtained from:

Authorized European representative:

Shure Europe GmbH

Headquarters Europe, Middle East & Africa

Department: EMEA Approval

Jakob-Dieffenbacher-Str. 12

75031 Eppingen, Germany

Phone: 49-7262-92 49 0

Fax: 49-7262-92 49 11 4



Licensing: A ministerial license to operate this equipment may be required in certain areas. Consult your national authority for possible requirements. Changes or modifications not expressly approved by Shure Incorporated could void your authority to operate the equipment. Licensing of Shure wireless microphone equipment is the user’s responsibility, and licensability depends on the user’s classification and application, and on the selected frequency. Shure strongly urges the user to contact the appropriate telecommunications authority concerning proper licensing, and before choosing and ordering frequencies.