INFOTRON

Products

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Vehicle Fleet Management System

Traffic Light Priority

Radio communication networks
- Repeaters
- TETRA
- WLAN

Monitoring and tracking

Video surveillance

Passenger counting

Repeaters

The SB-I/9000 stations are conventional repeaters for use on one duplex channel in 400-470 MHz band with 12.5 kHz channel and duplex separation between 1Mhz and 10Mhz. These stations have full duty high power amplifiers (30W max) and backup power supply ensuring full functionality of the station for 24 hours without main power supply.

Duplex separation may be other than standard 10 MHz but it must be individually tuned and is available on request. Repeaters have all standard selective calls and access controls like CTCSS, DCS, DTMF, CCIR/ZVEI, 1750Hz tone, or simply carrier. All parameters may be programmed by user in special user menu consisting of:

Carrier hold time
Answer tone
Transmitter power
Charging of backup battery

Stations may be delivered in wall mount or 19" rack enclosure. Standard internal backup battery may work up to 3 hours. For longer times of backup operation the external battery is needed. Charging of external battery is possible up to 66Ah and above this capacity a special enforced optional power supply must be used.

Specification of SB-I/9000 repeaters:
Frequency band Operation mode Audio frequency response Power supply Operation temperature Work kind Backup supply	- 68-88,136-174,400-470 MHz - F3E, G3E - 300-3000Hz - 230VAC-130VA max - -20 +60C - unattended - 13.8V DC 7A max
Transmitter: Output power Acceptable SWR Deviation Audio response Spurious radiation	- 1-30W programmed - <1.6 - <3kHz - do 6kHz - <-36dBm (ETS300.086)
Receiver: Sensitivity Adjacent channel selectivity	- -12dBu/PD/12dB SINAD - >55dB/-7,5 kHz (12,5kHz)
Duplexer: Min. duplex spacing:	- 4 or 6 cavities - Notch type - 5MHz
Note: with duplex spacing smaller than 5 MHz, parameters of duplex filter will be available on request
Attenuation of TX-RX Attenuation of TX-ANT Attenuation of RX-ANT Bandwidth of RX and TX path Nominal impedance Max. SWR of RX and TX	- -105dB typ - <-0.3dB typ - <1.5dB typ - about 1MHz around midfrequency - 50ohm - <1,5 typ.
Other user selected parameters: Carrier hold time Time of backup operation Access method Duplex separation Possibility to connect external control line	- programmed - min. 60 min - carrier, CTCSS, selective, 1750Hz - >1MHz (10MHz typ.)