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COBHAM 7023A - Page 68

COBHAM 7023A
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98-175666-A Chapter 4: Setup of the antenna 4-9
• FCC (FCC §25.205): 5 degrees
• ETSI (ETSI EN 302 340): The minimum elevation angle depends on the Tx
bandwidth and the nominal power of the VSAT modem, see the table below.
Bandwidth Nominal modem power
Modem Power [dBm] -22 -20 -18 -16 -14 -12 -10 -8 -6
Eirp@14.25
a
GHz
[dBm]
a. Eirp = Fixed system gain 44 dB + antenna gain @ 14.25 GHz 41.4 dB + modem power
63.4 65.4 67.4 69.4 71.4 73.4 75.4 77.4 79.4
64kHz 3°4°4°5°6°7°8°10°12°
128 kHz 3° 4° 4° 5° 6° 7° 8° 10° 12°
256 kHz 3° 4° 4° 5° 6° 7° 8° 10° 12°
512 kHz 3° 4° 4° 5° 6° 7° 8° 10° 12°
1024kHz 3°4°4°5°6°7°8°10°12°
2048kHz 3°3°3°4°5°5°6°8°9°
4096kHz 3°3°3°3°4°4°5°6°7°
8192kHz 3°3°3°3°3°3°4°5°5°
16384 kHz 3° 3° 3° 3° 3° 3° 3° 4° 4°
32768 kHz 3° 3° 3° 3° 3° 3° 3° 3° 3°
Table 4-3: SAILOR 1000 XTR Ka 4.5W Elevation TX cutoff (in degrees) versus VSAT modem
bandwidth and power
Bandwidth Nominal modem power
Modem Power [dBm] -16 -14 -12 -10 -8 -6 -4 -2 0
Eirp@14.25 GHz [dBm]
a
a. Eirp = Fixed system gain 48 dB + antenna gain @ 14.25 GHz 41.1 dB + modem power.
69.1 71.1 73.1 75.1 77.1 79.1 81.1 83.1 85.1
64kHz-1MHz 6° 7° 8° 9° 11° 13° 16° 19° 22°
2048 kHz 4° 5° 6° 7° 8° 10° 12° 14° 17°
4096kHz 3°4°5°6°7°8°9°11°13°
8192kHz 3°3°4°4°5°6°7°8°10°
16384 kHz 2° 2° 3° 3° 4° 5° 6° 7° 8°
32768 kHz 2° 2° 2° 3° 3° 4° 4° 5° 6°
Table 4-4: SAILOR 1000 XTR Ka 9W: Elevation TX cutoff (in degrees) versus VSAT modem
bandwidth and power

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