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Radio data transmitters:    WZ FS 2-2     WZ FS 70-3     WZ FS 80-3

Radio data transmitter WZ FS 70-3 / O

WZ FS 70-3 / O

Radio transmitter for voice and data in the 70 cm band

The WZ FS 70-3/O is a radio transmitter in OEM board design which can be used for data and voice transmission in the 70 cm band. Due to its very small and compact design and easy handling, it is perfect for the integration in data systems with high data rates across larger distances.

Data rates up to 9,600 bps are possible in connection with a GMSK modem, up to 4,800 bps in connection with an FFSK modem.

You can choose between devices with a max. transmission power of 25 mW up to 10 W, programmable in 5 power stages. On 32 memory spaces, it is possible to configure separate channels for voice and data transmission with different transmission power rates. Parameter setting is realised via Windows and RS232 interfaces. An implemented SWR and temperature protection ensure high operating safety. The firmware can be updated. The radio equipment meets the requirements of the German VDV guidelines and can be used in transport service applications.

The modern WZ FS device offers many functions.

Features

  • Setup via extended command interpreter using a terminal program.
  • 32 memory spaces; transmission channels and power rates can be set separately.
  • Selection of the memory spaces via hardware or software.
  • Automatic adjustment of the transmission power in case of interference or mismatches. This feature can be adjusted in the software.
  • Debounce time for hardware selection lines. The time can be adjusted in the software.
  • Automatic overtemperature protection. This feature can be adjusted in the software. Display for overtemperature (for example, an LED with series resistor can be installed at the user interface. For more information, please see chapter 7.3 Information on troubleshooting).
  • Display of device error conditions. The display time can be adjusted in the software (for example, an LED with series resistor can be installed at the user interface. For more information, please see chapter 7.3 Information on troubleshooting).
  • File download from the PC to the WZ FS device in order to setup parameters.
  • File upload from the WZ FS device to the PC in order to display the parameters in the terminal program.
  • File download from the PC to the WZ FS device in order to install new WZ FS firmware.

Technical data

  • Dimensions: 98 x 65 x 23 mm (LxWxH)
  • Weight: approx. 200 g
  • Type of protection:
  •   - IP20
  •   - Aluminium housing
  • Operating temperature: -25 °C ... +55 °C
  • Power supply: 12 V DC (10.8 ... 15.6 V DC)
  • Power input: Transmission: 2.0 A
  • Frequency range: 450 ... 470 MHz
  • Frequency step size: 6.25 kHz (0.5 channel spacing)
  • Frequency response:
  •   - 30 Hz ... 3 kHz (Data)
  •   - 300 Hz ... 3 kHz (Voice)
  • Channel spacing: 12.5 kHz
  • Distortion factor: < 5%
  • HF operating mode: Simplex
  • Sensitivity: typ. -114 dBm
  • Peak deviation: 2.5 kHz
  • Transmission power:
  •   - Programmable in 5 steps
  •   - 25 mW ... 6 W
  • Modulation: Data input: FM
  • Switching times:
  •   - Gating time: < 15 ms
  •   - Sampling time: < 6 ms
  •   - Protocol = Xon/Xoff
  • Input impedance AF input: approx. 600 Ohm
  • Level at AF data input:
  •   - for 1.5 kHz stroke: 775 mV
  • for optimum modulation index:
  •   - for 1.5 kHz stroke: 900 mV (optimised for WZ LSA 70-3/U)
  • Antenna: maximum permissible radiated power must not be exceeded
  • Programming interface:
  •   - RS232 in; TTL out
  •   - Baud rate = 9600 / 8N1
  •   - Protocol = Xon/Xoff
  • Interfaces:
  •   - Antenna terminal: MCXplug
  •   - RSSI output
  • HF channel setting: via parameterisation interface
  • Memory spaces: 32
  • Standards and certifications:
  •   - ETSI EN 300 113 (Data)
  •   - ETSI EN 300 086 (Voice)
  •   - ETSI EN 301 489 (EMC)
  •   - German KBA certification e1
  •   - German VDV guidelines
  • Options:
  •   - 6.25 kHz channel spacing
  •   - GMSK or FFSK modulation
  •   - Adapter board RS232, RS485, USB

Subject to change and error.

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  •  André Körber

    André Körber

    Sales / Marketing / Technical Advice

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