Garmin Apollo CNX80 Installation Manual - page 23
General
Information
GNS 480 (CNX80) Installation Manual560-0982-01 Rev A
1-13
1.3.10.1.2 A-34 (590-1112)
Early production runs of PN 590-1112 were marked with TSO-C129a. This antenna was re-qualified to
TSO-C144 with no changes to the antenna. P/N 590-1112 antennas marked with TSO-C129a
identification are identical to those marked with TSO-C144.
Applicable TSO: .........................................................TSO-C144 (RTCA/DO-228 with Change No. 1)
Frequency: .....................................................1575 MHz
Polarization:...................................................Right Hand Circular
Axial Ratio:....................................................3 dB Max at bore site
Radiation Coverage: ......................................Elevation Angle
Minimum Gain
>15º -2.0
dBic
10º
-3.0
dBic
5º
-4.5
dBic
0º
-7.5
dBic
Finish: ............................................................Polyurethane Enamel
Weight: .........................................................7.0 oz. (0.2 kg)
Height: ..........................................................0.66 inches (1.76 cm)
Operating Temperature: ................................-55°C to +85°C
Operating Altitude: .......................................55,000 feet (16,764m) max.
Amplifier:
Gain .........................................................26.5 dB ±2 dB
Noise Figure:...........................................2.5 dB Max
Impedance: ..............................................50 ohms
VSWR (Dry): ..........................................
VSWR (Rain):.........................................
Band Rejection:.......................................35 dB
Power Handling: .....................................1 Watt
Voltage:...................................................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 nanosecond
Pass Band Ripple (3dB bandwidth) …….0.2 dB max