SpecificationsHPT135 VHF Modem SpecificationsEnvironmental Specifications26 www.javad.comA.1.2. Environmental SpecificationsTable A-2 lists the modem’s environmental specifications.Table A-2. Environmental SpecificationsCommunication Mode Time Division Duplex (TDD)Time Division Multiple Access (TDMA)Maximum Distance Range 48 miles / 77 kmSerial port Serial (RS-232) up to 115200 bps.Serial port configurable as RS-232 andRS-422, or RS-485USB USB 2.0 device port (12 Mbps)Parameter SpecificationTemperature Operating –30oC to +50 o C (USA)–20o C to +55o C (EU)–40o C to +60o C absolute ratingStorage –40o C to +85o CEnvironmental IP 66Dimensions (H x W x D) 152 mm x 84 mm x72 mmWeight 900 gPower Supply Voltage +12VDC nominalPower Consumption (Average) 120W/38W/300mW – Continuous Transmit/Transmit with 30% duty cycle/SleepHousing/Color Aluminum / Two-tone JAVAD GNSS Green / GrayAntenna Connector BNC, 50W