MPN #SMQV-21    


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Dual Battery - Digital Hybrid Wireless UHF Belt-Pack Transmitter

To meet the demand for both extended operating range and extended battery life, the "V" series SM transmitters offer selectable output power (See specific model data sheets for details). A third selection at 50 mW is provided for some theatrical applications where the system design specifies lower transmitter power.

The input section features the unique servo bias input circuitry with a standard TA5M type jack for use with electret lavaliere mics, dynamic mics, or line level signals. A DSP-controlled analog audio limiter is employed before the A-D converter. The limiter has a range of more than 30 dB for excellent overload protection and a dual release envelope that makes the limiter acoustically transparent while maintaining low distortion. The limiter recovers quickly from brief transients, with no audible side effects, and also recovers slowly from sustained high levels to keep audio distortion low while preserving short term dynamics.
  • Digital Hybrid Wireless? Technology*
  • Variable, selectable power output: SMQV: 50mW, 100mW, 250mW
  • Membrane switch control panel with LCD display
  • 256 synthesized UHF frequencies
  • Wide input dynamic range
  • DSP based pilot-tone signal
  • Circulator/Isolator output stage
  • Splash-proof, machined aluminum housing
  • Non-corrosive, super-hard finish
  • Operating frequencies: Block 470: 470.100 - 495.600
    Channel Spacing: Selectable; 25 or 100 kHz
    Frequency selection: Control panel mounted membrane switches
    RF Power output: Switchable; 50, 100 or 250 mW
    Compatibility Modes (6): Digital Hybrid WirelessTM (400 Series), 200 Series, 100 Series, Mode 3 , Mode 6, IFB
    Pilot tone: 25 to 32 kHz; 5 kHz deviation (in 400 Series Mode)
    Frequency stability: ± 0.002%
    Deviation: ± 75 kHz max. (in 400 Series Mode)
    Spurious radiation: 60 dB below carrier
    Equivalent input noise: -125 dBV, A-weighted

    Input level:
  • If set for dynamic mic: 0.5 mV to 50 mV before limiting., Greater than 1 V with limiting.
  • If set for electret lavaliere mic: 17 mV to 1.7 V before limiting. Greater than 50 V with limiting.
  • Line level input: 17 mV to 1.7 V before limiting. Greater than 50 V with limiting.

  • Input impedance: Dynamic mic: 300 Ohms, Electret lavaliere: Input is virtual ground with servo adjusted constant current bias, Line level: 2.7 k Ohms
    Input limiter: Soft limiter, 30 dB range
    Bias voltages: Fixed 5 V at up to 5 mA Selectable 2 V or 4 V servo bias for any electret lavaliere.
    Gain control range: 44 dB; panel mounted membrane switches
    Modulation indicators: Dual bicolor LEDs indicate modulation of -20, -10, 0, +10 dB referenced to full modulation.
    Controls: Control panel with LCD and four membrane switches.
    Total Harmonic Distortion: 0.2% typical (400 Series mode)
    Audio Input Jack: Switchcraft 5-pin locking (TA5F)
    Antenna: Flexible, unbreakable steel cable.
    Batteries: 1.5 Volt AA lithium or rechargeable NiMH recommended

    Included Accessories
    2 - AA Lithium Batteries
    1 - Foam Insulating Pads (Part #35923)
    1 - Pouch (Part #35697)
    1 - Mic Connector Kit (Part #SMKITTA5)
    1 - Belt Clip (Part #SMBCUPSL)
    1 - Quick Start Guide
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