MPN #SSM-B1    
Lectrosonics SSM (B1: 537.600 - 607.950 MHz)


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Digital hybrid wireless miniature transmitter for theater, live stage, TV, & film

The SSM from Lectrosonics is a miniature Digital Hybrid Wireless Transmitter with selectable frequencies across a maximum tuning range of 76.7 MHz and has selectable 25 or 50 mW RF output power. It can be used in applications where concealment in costuming is required or any other production such as for live stage, theater, houses of worship, reality TV, and more.

The SSM features selectable frequencies in 100 kHz or 25 kHz steps yielding a total of 3,072 available frequencies across three standard frequency blocks. Its lithium-ion battery provides power and sits in a stainless-steel battery door that latches closed and cannot be jarred open accidentally.

The servo bias input that is built into the transmitter accepts mic or line level signals and uses gain adjustments in 1 dB steps. The LED indicators on the membrane keypad allow you to monitor precise gain adjustments and settings. A built-in limiter in the preamp, handles signal peaks over 30 dB. This provides you with the maximum signal to noise ratio and minimum distortion for input, but still provides protection against input overloads.

The SSM is compatible with earlier analog Lectrosonics receivers IFB, and some other receivers, from manufacturers that utilize the DSP emulation mode, which is selectable in the LCD menu. The SSM transmitter housing is constructed of machined aluminum and has a hard, black electroless nickel finish called ebENi.
  • Tunable across three standard frequency blocks (76.8 MHz)
  • Digital Hybrid Wireless audio for compandor-free digital quality
  • Selectable 25 or 50 mW RF power
  • Compatibility modes for use with analog receivers
  • 25 or 100 kHz tuning steps for up to 3072 selectable frequencies
  • Wide range input gain control in 1 dB steps
  • Quick change Lithium-ion rechargeable battery
  • Audio coupled remote control
  • Operating Frequencies: Block B1: 537.600 - 607.950
    Frequency Selection Steps: Selectable; 100 kHz or 25 kHz
    RF Power output: Selectable; 25 or 50 mW
    Pilot tone: 25 to 32 kHz; 5 kHz deviation (Digital Hybrid mode)
    Frequency Stability: ± 0.002%
    Deviation: ± 75 kHz max. (Digital Hybrid mode)
    Spurious radiation: 60 dB below carrier
    Equivalent input noise: -120 dBV (A-weighted)
    Input level: Nominal 2 mV to 300 mV, before limiting Greater than 1V maximum, with limiting.

    Input impedance:
  • Mic: 300 or 4.5 k ohm; selectable
  • Line: greater than 100 k ohm

  • Input limiter: DSP controlled, dual envelope "soft" limiter with greater than 30 dB range
    Gain control range: 44 dB; digital control
    Modulation indicators: Dual bicolor LEDs indicate modulation of -20, -10, 0 and +10 dB referenced to full modulation
    Frequency Response: 70 Hz to 20 kHz (+/-1dB)
    Low frequency roll-off: -12 dB/octave; 70 Hz
    THD: 0.2% (typical)
    Audio Input Jack: LEMO 00 Series 3-pin
    Antenna: Galvanized steel, flexible wire
    Battery: Lithium-ion 3.7 V 1000 mAH NP50 battery pack
    Battery Life: 6 hours per charge
    Weight: 2.3 ounces (65.2 grams) including lithium battery pack
    Dimensions (housing): 2.3 x 1.5 x .56 in. (58.4 x 38 x 14.2 mm)
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