Electro Voice R300-HD

ClearScan automatically finds the clearest channel
EZsync one-step channel setup
PL22 cardioid dynamic microphone element
14 hour battery life from two AA alkaline
Rugged metal transmitter
Metal receiver chassis with optional rack mount
The R300-HD is a robust handheld UHF wireless system, suitable for any application where the convenience of a handheld transmitter is required. The HT-300 metal handheld transmitter is made to withstand the rigors of daily use while remaining comfortable and light-weight in your hand. The PL22 dynamic microphone is the perfect all-around microphone for singing, speaking engagements, and emcees. The cardioid pickup pattern rejects sounds from the surroundings, helps control audio feedback, and still allows an experienced vocalist to work the microphone. 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.
 

Receiver Type:  Synthesized PLL
Frequency Range (RF):  A Band 618 - 634 MHz (Not Available in US or Canada)
B Band 678 - 694 MHz (Not Available in US or Canada)
C Band 516 - 532 MHz
E Band 850 - 865 MHz (Not Available in US or Canada)
Number of Channels:  32
Modulation:  ± 40 kHz
Diversity:  True Antenna
RF Sensitivity:  <1.0 μV for 12 dB SINAD
Image Rejection:  > 55 dB
Squelch:  Tone Code plus Amplitude
Power Requirements:  12-16 VDC, 500mA max
Operating Temperature:  5°C to 45°C (41°F to 113°F)
Dimensions:  43 x 206 x 210 mm 
Audio Parameters,    
Frequency Response:  80 Hz - 18 kHz ± 2 dB
Balanced Output:  20 dBV (max @ 40 kHz deviation)
Unbalanced Output:  Adjustable 8 mV to 0.755V RMS
Distortion:  < 1.0%, 0.4% typical (ref 1 kHz, 40 kHz deviation)
Signal-to-Noise Ratio:  > 100 dB A-Weighted
Dynamic Range    > 95 dB
BP-300 and HT-300 Transmitter Specifications    
Radiated Output:  8 mW typical
Back Lit LCD Display:  Channel, Frequency, Mute, and Battery Level
Microphone Head:  Electro-Voice PL22 Cardioid Dynamic
Standard Lavalier Microphone    Electro-Voice ULM18 Uni-Directional Condenser
TA4F Connector Wiring    Pin 1 Ground; Pin 2 Mic Input; Pin 3 +5V bias; Pin 4 +5V thru 2.2k Ω
Power Requirement:  Two AA batteries
Battery Life (Typical):  > 14 hours with AA alkaline typical
Bodypack Antenna:  Flexible external 1/4 wave
Handheld Antenna:  Internal proprietary
Weight:  294 g