Sennheiser SK 500 G4 Wireless Bodypack Transmitter (Band GW1)

• Powerful bodypack transmitter with increased band- width and transmission power
• Easy and flexible wireless synchronization between transmitter and receiver via infrared
• Up to 32 compatible channels
• Up to 88 MHz bandwidth with 3520 selectable frequen- cies, fully tunable in a stable UHF range
• Ethernet connection for Wireless Systems Manager (WSM) control software for advanced frequency coordi- nation in multi-channel setups
• High RF output power (up to 50 mW, adjustable in three steps 10/30/50) depending on country regulations

RF characteristics

• Modulation : Wideband FM
• Frequency ranges : Gw1: 558 - 608 MHz
• Transmission frequencies
• Max. 2880 frequencies, adjustable in 25 kHz steps
• 20 frequency banks, each with up to 32 factory-pre-set channels, no intermodulation
• 6 frequency banks with up to 32 programmable channels
• Switching bandwidth : up to 72 MHz
• Nominal/peak deviation : ±24 kHz / ±48 kHz
• Frequency stability : ≤ ±15 ppm
• RF output power at 50 Ω
• switchable: Low: typ. 10 mW
• Standard: typ. 30 mW High: typ. 50 mW
• Pilot tone squelch : Can be switched off

AF characteristics

• Compander system : Sennheiser HDX

AF Frequency Response

• Mic: 80 – 18,000 Hz
• Line: 25 – 18,000 Hz
• Signal-to-noise ratio (1 mV, peak deviation) : ≥ 115 dBA
• Total harmonic distortion (THD) : ≤ 0.9 %
• Max. microphone/line input voltage : 3 V
• Microphone/line input impedance : 40 kΩ, unbalanced / 1 MΩ
• Input capacitance : Switchable
• Setting range for input sensitivity : 60 dB, adjustable in 3 dB steps

Overall Device

• Temperature range : -10 °C to +55 °C
• Power supply : 2 AA batteries, 1.5 V or BA 2015 accupack
• Nominal voltage : 3 V battery / 2.4 V rechargeable battery
• Current consumption : at nominal voltage: typ. 180 mA with transmitter switched off: ≤ 25 µA
• Operating time : Typically 8 h
• Dimensions : Approx. 82 x 64 x 24 mm