GPA-9 manual GE MDS GPA-9 Manual P/N draft Rev D.
GPA-9 manual Table of Contents 1 Important Information ............................................................................................................ 3 1.1 RF Exposure ................................................................................................................... 3 1.2 FCC Approval Notice ...................................................................................................... 3 1.3 FCC Part 90 Information......................................................
GPA-9 manual 1 Important Information 1.1 RF Exposure Professional installation required. The radio equipment described in this guide emits radio frequency energy. Although the power level is low, the concentrated energy from a directional antenna may pose a health hazard. Do not allow people to come closer than 1.12 meters, (3.7 feet) to the antenna when the transmitter is operating with a unity gain antenna.
GPA-9 manual Introduction The GPA-9 is an RF power amplifier designed for use in the 896-940MHz frequency range at up to 40 Watts. The A version is intended to serve as a 100% duty cycle amplifier for MDS SD9 and other MDS radios operating in point-to-multipoint repeater or base applications. 1.4 Product Description The GPA-9 power amplifier consists of an RF amplifier and PCB mounted to a heat sink, with a DC Power interface, PTT and input/output RF connections on the sidewalls of the chassis.
GPA-9 manual Interfaces 1.6 J102 Terminal Block The J102 terminal block provides keying and power control signals. Table 1 – J102 Control Cable Pin Functions Pin Pin 1 Pin 2 Pin 3 Pin 4 Function 13.8V nominal 10 amps DC input Power supply Ground ground PTT (ground to transmit) 1.7 J100 RF Output J100 is a 50 Ohm Female Type N connector. 1.8 J101 RF Input J101 is a 50 Ohm Female Type N connector. 1.
GPA-9 manual 2 Installation 2.1 Mounting the Unit The GPA-9 A version is designed for mounting in a standard 19–inch rack cabinet using the 3U panel provided. Four screws (not provided) are required to attach the panel to the rack sides. This panel also serves as a heat sink for the PA module, and is normally mounted with the cooling fins facing outward. The GPA-9 B version uses a smaller heatsink (intermittent duty) but has the same 4 mounting screws. 2.
GPA-9 manual GPA-9B smaller heat-sink option GPA-9 standard heat-sink option
GPA-9 manual Unit Specifications Table 2 – Unit Specifications Parameter Operating Voltage Maximum Current Draw RF Drive Power RF Out Duty Cycle (GPA-9A model) Duty Cycle (GPA-9B model) Operating Frequency Mounting Approximate Weight Dimensions (GPA-9A model) Dimensions (GPA-9B model) FCC Identifier Name of Grantee Specification 10-16 Vdc. 13.8V nominal 10 Amperes @ 13.8V, 40W RF Out.
