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Sennheiser SK 100 G4 Wireless Bodypack Transmitter (B)

Code: SEN/509503
The SK 100 G4 Wireless Bodypack Transmitter is a robust bodypack transmitter for daily use with evolution wireless G4 100 systems. Note: B Block covers 626 to 668 MHz. Be sure to check the Sennheiser Frequency Finder for the best range to cover your needs!


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The SK 100 G4 Wireless Bodypack Transmitter is a robust bodypack transmitter for daily use with evolution wireless G4 100 systems. It features true diversity technology and can be used when paired with a companion receiver and microphone as part of a wireless RF transmission system. The transmitter's menu-driven backlit display shows current frequency, frequency band and channel number, metering of AF level, transmission status, battery status, and more.

Furthermore, the transmitter is equipped with a mute switch and is powered by two 1.5V AA size batteries or by one Sennheiser BA 2015 rechargeable accupack. It is built with a rugged, lightweight metal housing. The SK 100 G4 transmitter will operate about 8 hours and is equipped with a 1/8" line/mic input jack. With 25 Hz to 18 kHz AF frequency response, the SK 100 G4 is designed to deliver a natural audio quality.


  • Robust bodypack transmitter for daily use on stage.
  • Easy and flexible wireless synchronization between transmitter and receiver via infrared
  • Fast frequency allocation for up to 12 receivers via new linking functionality
  • Up to 20 compatible channels
  • Up to 42 MHz bandwidth with 1680 selectable frequencies, fully tunable in a stable UHF range
  • Transmission Range: up to 100 meters / 300 feet
  • High RF output power (up to 30 mW) depending on country regulations

Kit Includes

  • SK 100 G4 bodypack transmitter
  • 2 AA batteries
  • Quick guide
  • Safety guide
  • Manufacturer declaration sheet


Frequency range B: 626 - 668 MHz
Dimensions Approx. 82 x 64 x 24 mm
Compander Sennheiser HDX
THD, total harmonic distortion ≤ 0.9 %
Weight (incl. batteries) approx. 160 g
Signal-to-noise ratio ≥ 110 dBA
RF output power Max. 30 mW
Switching bandwidth up to 42 MHz
Peak deviation ±48 kHz
Nominal deviation ±24 kHz
Operating time Typically 8 h
Modulation Wideband FM
Power supply 2 AA batteries, 1.5 V or BA 2015 accupack
Current consumption at nominal voltage: typ. 180 mA with transmitter switched off: ≤ 25 μA
Input impedance 40 kΩ, unbalanced / 1 MΩ
Max. Input voltage 3 Veff
Powering 3 V battery / 2.4 V rechargeable battery
Transmission frequency Max. 1680 transmitting frequencies, adjustable in 25 kHz steps 20 frequency banks, each with up to 12 factory-preset channels, no intermodulation 1 frequency bank with up to 12 programmable channels
AF frequency response Mic: 80 – 18,000 Hz Line: 25 – 18,000 Hz
Temperature Range -10 °C to +55 °C
Frequency stability ≤ ±15 ppm