Garmin GPS 15 Technical Specifications

Also see for GPS 15: Technical specifications

Garmin GPS 15 Technical Specifications Manual pdf 12 page image

GPS 15 Technical Specifications (P/N 190-00266-00) Rev. BPage 61.5.6 Antenna SpecificationsShould be an active antenna with the following specifications:Gain: Antenna should provide between 10 dB to 40 dB net gain between theantenna feed point and the connection to the GPS15. All amplifier gains,filter losses, cable losses, etc. must be considered when calculating thegain.RF Connection: GPS 15 RF Connection: MCX Female connector (on the GPS 15 board)Antenna Connection: MCX Male connector (on the end of the antennacable)Garmin Antenna: GPS 27C (Garmin Part Number 010-10052-05) provides the requiredMCX Male connector. Other Garmin antennas terminated in a BNC Maleconnector may also be used if a Garmin MCX to BNC Adapter Cable(Garmin Part Number 010-10121-00) is used. Place the MCX to BNCAdapter Cable between the connector on the end of the antenna cable andthe connector on the GPS 15.Noise Figure/Gain: The total noise on the external antenna must be ≤ 7dB with a gain between10 dB and 40 dB. Refer to the table below.Table 1: Gain vs. SNR for Given Noise FigureShould be properly biased by your choice of:Power from on-board source: 3.3 Vdc, the voltage you supply to Vin, through an on-board ~10 Ohmcurrent limiting resistance. The antenna must not draw more than 60mA.Power from external source: 4.0 to 8.0 Vdc bias through the series combination of an on-board ~10Ohm current limiting resistance and a Schottky diode. The antenna mustnot draw more than 60mA.10.011.012.013.014.015.016.017.018.010.0 15.0 20.0 25.0 30.0 35.0 40.0Gain (dB)SNR (dB)NF=1.3dB NF=2.3dB NF=3.3dB NF=4.3dB NF=5.3dB NF=6.3dB NF=7.3dB