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Lectrosonics SSM-B1 Micro Transmitter, 25, 50 Mw, Lemo, W/Belt Clip, Battery & Charger

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The SSM is ideal in theatrical or any other production where concealment in costuming is required. In spite of its tiny size, the transmitter offers an extensive feature set and performance on par with all of the Digital Hybrid Wireless® models.Features: Tunable across three standard frequency bl... Read More

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The SSM is ideal in theatrical or any other production where concealment in costuming is required. In spite of its tiny size, the transmitter offers an extensive feature set and performance on par with all of the Digital Hybrid Wireless® models.


  • 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

Frequencies are selectable in 100 kHz or 25 kHz steps across a maximum tuning range of 76.7 MHz. This yields a total of 3072 available frequencies across three standard frequency blocks. The tuning range varies in other blocks to meet applicable frequency allocations.

The servo bias input accepts mic or line level signals with a wide range of gain adjustment in 1 dB steps. Accurate LED indications on the keypad allow precise gain adjustments to be made for the maximum signal to noise ratio and minimum distortion. The limiter in the preamp can cleanly handle signal peaks over 30 dB above full modulation, allowing the input gain to be set high enough to achieve the maximum signal to noise ratio, yet provide protection against input overload.

Compatibility with earlier analog Lectrosonics receivers, Lectrosonics IFB receivers and some receivers from other manufacturers is provided by DSP emulation modes selected in the LCD menu.

*Digital Hybrid Wireless™ is a revolutionary new design that combines 24-bit digital audio with an analog FM radio link to provide outstanding audio quality and the extended operating range of the best analog wireless systems. The design overcomes channel noise in a dramatically new way, digitally encoding the audio bitstream in the transmitter and decoding it in the receiver, yet sending the encoded information via an analog FM wireless link. This proprietary DSP algorithm eliminates a compandor circuit and its artifacts, and preserves the RF spectral footprint of analog FM designs to simplify multi-channel coordination with exisiting analog wireless systems.

Included Accessories:

  • 1 - 26995 Belt Clip
  • 1 - 27079 ANTENNA UP BELT CLIP
  • 1 - 35939 Pouch
  • 1 - 40106-1 Lithium Batteries
  • 1 - 40102 Battery Charger
  • 3 - P1311 USB Port Plug

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Product Specs

Operating FrequenciesBand A1: 470.100 - 537.575
Band B1: 537.600 - 614.375
Band B2: 563.200 - 639.975
Band C1: 614.400 - 691.175
Frequency Selection StepsSelectable; 100 kHz or 25 kHz
RF Power outputSelectable; 25 or 50 mW
Pilot tone25 to 32 kHz; 5 kHz deviation (Digital Hybrid mode)
Frequency Stability± 0.002% Deviation: ± 75 kHz max. (Digital Hybrid mode)
Spurious radiation60 dB below carrier
Equivalent input noise-120 dBV (A-weighted)
Input levelNominal 2 mV to 300 mV, before limiting
Greater than 1V maximum, with limiting
Input impedanceMic: 300 or 4.5 k ohm; selectable
Line: greater than 100 k ohm
Input limiterDSP controlled, dual envelope "soft" limiter with greater than 30 dB range
Gain control range44 dB; digital control
Modulation indicatorsDual bicolor LEDs indicate modulation of -20, -10, 0 and +10 dB referenced to full modulation
Audio Performance (Digital Hybrid mode)
     Frequency Response 70 Hz to 20 kHz (+/-1dB)
     Low frequency roll-off -12 dB/octave; 70 Hz
     THD0.2% (typical)
    SNR at receiver output
SmartNRno limitingw/limiting
Note: The dual envelope "soft" limiter provides exceptionally good handling of transients using variable attack and release time constants. Once activated, the limiter compresses 30+ dB of transmitter input range into 4.5 dB of receiver output range, thus reducing the measured figure for SNR without limiting by 4.5 dB
Controls Side panel membrane switches with LCD interface for power on/off and all setup and configuration controls
Audio Input JackLEMO 00 Series 3-pin
AntennaGalvanized steel, flexible wire
BatteryLithium-ion 3.6 V 1000 mAH NP50 battery pack
Battery Life6 hours per charge
Weight2.3 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)
Emission Designator180KF3E

Specifications subject to change without notice

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