Sennheiser EW 100 G4 – BASE SKM-S-C-TH

Sennheiser EW 100 G4 – BASE SKM-S-C-TH (C-TH band 748.2–757.8 MHz)
Pro handheld wireless system for presenters and singers — stable RF, clear sound.
Highlights

EM 100 G4 receiver with True Diversity in a rugged metal chassis for rock-solid performance in congested RF environments. 
SKM 100 G4-S handheld (with Mute switch); swap to your preferred MMD 835/845/865/935/945 capsule. 
Thailand C-TH band: 748.2–757.8 MHz — compliant and reliable for local use.
Wide tuning: up to 42 MHz | 1,680 tunable frequencies | 20 banks; fast IR sync, low intermod. 
Clean audio via HDX compander + pilot-tone squelch; typical range up to ~100 m (site-dependent).

EM 100 G4
Frequency range : 748.2 – 757.8 Mhz
Dimensions Approx. 190 x 212 x 43 mm
Compander Sennheiser HDX
THD, total harmonic distortion ≤ 0.9 %
Weight Approx. 980 g
Audio output 6.3 mm jack socket (unbalanced): +12 dBu  XLR socket (balanced): +18 dBu
Signal-to-noise ratio ≥ 110 dBA
Switching bandwidth up to 42 MHz
Peak deviation ±48 kHz
Nominal deviation ±24 kHz
Modulation Wideband FM
Power supply 12 V DC
Antenna connector 2 BNC sockets
Current consumption 300 mA
Adjacent channel rejection Typically ≥ 65 dB
Intermodulation attenuation Typically ≥ 65 dB
Receiving frequency Max. 1680 receiving 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
RF sensitivity < 2.5 μV for 52 dBA eff S/N
Squelch low: 5 dBµV middle: 15 dBµV high: 25 dBμV
Equalizer Preset 1: FlatPreset 2: Low Cut (-3 dB at 180 Hz)Preset 3: Low Cut/High Boost (-3 dB at 180 Hz, +6 dB at 10 kHz)

SKM 100 G4-S
Dimensions Approx. Ø 50 x 265 mm
Compander Sennheiser HDX
THD, total harmonic distortion ≤ 0.9 %
Weight (incl. batteries) approx. 450 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
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 80 – 18,000 Hz
Temperature Range -10 °C to +55 °C
Frequency stability ≤ ±15 ppm