Lapel System - ULM18 Directional Microphone

  • ClearScan automatically finds the clearest channel
  • EZsync one-step channel setup
  • ULM18 directional lavalier microphone
  • 14 hour battery life from two AA alkaline
  • Rugged metal transmitter
  • Metal receiver chassis with optional rack mount

The R300-L is a robust UHF wireless bodypack system, suitable for any application where the convenience of a wireless lavalier microphone is required. The system's BP-300 rugged metal bodypack transmitter is simple to use, and is powered by two AA batteries. Included with the system, the ULM18 is a high quality directional (cardioid) condenser lavalier microphone suitable for sound reinforcement or recording of voice, and allows users the convenience of a hands-free presentation or performance experience. Exceptionally useful for sound reinforcement applications, the ULM18’s directional cardioid polar pattern reduces sound system feedback potential when used properly. The receiver's dual antenna diversity helps avoid signal dropouts, and its durable metal frame and chassis can either be used on a tabletop, or rack-mounted with optional rack mounting hardware.


Antennas Flexible TNC 1/2 Wave
Audio Frequency Response 80 Hz - 18kHz +/- 2dB
Balanced Line Level Output (RMS Adjustable) 10 - 100mV

Battery Life 14 Hours with (2) AA alkalines typical
Case Material Metal
Connector Type 1/4 inch unbalanced, 3-Pin XLR balanced
Controls On/Off, Set, Up, Down, Sync
Distortion (@ 1 kHz, 40 kHz deviation) less than 1.0, 0.4 typical%
Diversity True Antenna
Dynamic Range greater than 95 dBdB
Element ULM18 Directional Microphone
Family R300
Number of Channels 32 Per Band, 8 Simultaneous
Operating Temperature Range 5º - 45º C (41º - 113º F)
Polar Pattern Cardioid
Power Requirement 12-16 VDC, 500 mA max
Power Supply 12 VDC, 500 mA max
Receiver Type Synthesized PLL
RF Frequency Range 16MHz
RF Output 8 mW Typical
RF Sensitivity (12 dB SINAD) less than 1.0uV
Signal-to-Noise Ratio (A-weighted) greater than 100 dBdB
Squelch Tone code plus Amplitude

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Name Language Size Date
R300 Brochure EN 561KB Jan 10, 2011
Microphone Catalog EN 5.69MB Jul 7, 2016
R300 Folleto Español ES 3.41MB Sep 27, 2012
Name Size Date
EC-Declaration of Conformity 621KB Jul 5, 2017
Environmental Compliance Document 148KB Oct 3, 2017
EC Дekлapция Зa Cъotbetctbиe 623KB Jul 5, 2017
EU-Overensstemmelseserklæring 615KB Jul 5, 2017
EU-Konformitätserklärung 623KB Jul 5, 2017
Δhλωσh Σymmopφωσhσ EE 627KB Jul 5, 2017
Declaración UE de Conformidad 622KB Jul 5, 2017
ELi Vastavusdeklaratsioon 608KB Jul 5, 2017
EU-Vaatimustenmukaisuusvakuutus 619KB Jul 5, 2017
Déclaration UE de Conformité 616KB Jul 5, 2017
EU Izjava o Sukladnosti 610KB Jul 5, 2017
EU-Megfelelöségi Nyilatkozat 621KB Jul 5, 2017
Dichiarazione di Conformità UE 618KB Jul 5, 2017
ES Atitikties Deklaracija 608KB Jul 5, 2017
ES Atbilstïbas Deklarācija 616KB Jul 5, 2017
Dikjarazzjoni Ta' Konformità Tal-UE 617KB Jul 5, 2017
EU-Conformiteitsverklaring 620KB Jul 5, 2017
Deklaracja Zgodności ue 620KB Jul 5, 2017
Declaração ue de Conformidade 620KB Jul 5, 2017
Declaratia ue de Conformitate 618KB Jul 5, 2017
EÚ Vyhlásenie o Zhode 608KB Jul 5, 2017
Izjava EU o Skladnosti 610KB Jul 5, 2017
EC-Försäkran om Överensstämmelse 642KB Jul 5, 2017
Name Language Size Date
R300 Engineering Data Sheet EN 908KB Oct 12, 2015
ULM-18 Engineering Data Sheet EN 405KB Oct 14, 2014
Name Language Size Date
R300 flyer en Español ES 634KB Sep 27, 2012
Name Language Size Date
R300 Quick Start Guide EN 118KB Sep 21, 2015
R300 User Guide EN 897KB May 3, 2016
Name Language Size Date
Service Policies for the Americas EN 232KB Apr 25, 2013
Name Language Size Date
Audio 101 - Basic Audio Terminology EN 2.74MB Dec 13, 2012
Audio 101 - Microphone Basics EN 4.25MB Dec 13, 2012
Audio 101 - Wireless Microphone Basics EN 3.52MB Dec 13, 2012
Microphone Facts- Axial Response EN 1.36MB May 3, 2012
PA Bible 03: Microphone Types EN 462KB Dec 26, 2007
PA Bible 08: Microphone Techniques EN 604KB Dec 26, 2007
PA Bible 15: Barrier Miking EN 254KB Dec 26, 2007
The EV PA Bible EN 1.14MB Dec 26, 2007

R300-L PNG



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