Garmin GNS 480 Installation Manual

Also see for Apollo CNX80: User Newsletter User Newsletter Supplemental Flight manual Pilot's guide Data list

General InformationGNS 480 (CNX80) Installation Manual560-0982-01 Rev A 1-131.3.10.1.2 A-34 (590-1112)Early production runs of PN 590-1112 were marked with TSO-C129a. This antenna was re-qualified toTSO-C144 with no changes to the antenna. P/N 590-1112 antennas marked with TSO-C129aidentification are identical to those marked with TSO-C144.Applicable TSO: .........................................................TSO-C144 (RTCA/DO-228 with Change No. 1)Frequency: .....................................................1575 MHzPolarization:...................................................Right Hand CircularAxial Ratio:....................................................3 dB Max at bore siteRadiation Coverage: ......................................Elevation Angle Minimum Gain>15º -2.0 dBic10º -3.0 dBic5º -4.5 dBic0º -7.5 dBicFinish: ............................................................Polyurethane EnamelWeight: .........................................................7.0 oz. (0.2 kg)Height: ..........................................................0.66 inches (1.76 cm)Operating Temperature: ................................-55°C to +85°COperating Altitude: .......................................55,000 feet (16,764m) max.Amplifier:Gain.........................................................26.5 dB ±2 dBNoise Figure:...........................................2.5 dB MaxImpedance: ..............................................50 ohmsVSWR (Dry): ..........................................< 1.5:1VSWR (Rain):.........................................< 2.0:1Band Rejection:.......................................35 dBPower Handling: .....................................1 WattVoltage:...................................................5 VDC ±10%Current: ...................................................35 mA nominal, 40 mA max.L1 Filter Bandwidth................... .............1575 ±20 MHz (3 dB)+110, -210 MHz (60dB)Group Delay (3dB bandwidth)................27 ±10 nanosecondPass Band Ripple (3dB bandwidth) …….0.2 dB max