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acquiring and maintaining lock to signals with a frequency
offset from nominal of up to k2.180 kHz at carrier-to-noise
levels as shown in Table 4-2.
4.2.3.4.5 Receiver Doppler mtcc. The receiver shall be
capable of acquiring and maintaining performance per 4.3.3
with a rate of change of frequency of 30 Hz per second.
12.5 dBW. The ElRP radiated in any direction shall not exceed
34.8 dBW at the maximum setting.
4.2.3.5.1.2 For high gain antenna operation, the minimum
value of EIRP per carrier in the direction of the satellite, when
commanded to the maximum setting, shall be 25.5 dBW. The
E mra diated in any direction shall not ,exceed 34.8 dBW at
the maximum setting.
4.2.3.5.1.3 At settings less than the maximum setting, the
HRP per carrier radiated in any direction shall not exceed the
EIRP radiated toward the wanted satellite by more than 5 dB.
4.2.3.5.1.4 For multicamer operation, the maximum
allowable operating EIEW shall be the level at which:
a) the total intermodulation product contribution from
active sources is the maximum permitted in 4.2.3.5.7
(in-band intermodulation products), or
b) the gain-to-noise temperature ratio is the minimum
permitted in 4.2.3.2.1 or 4.2.3.3.1, as applicable.
4.2.3.5.2 EIRP control. The EIRP per carrier in the
direction of the wanted satellite shall be adjustable over a
range of 15 dB in steps of 1 dl3 by command from the GES:
4.2.3.5.3 Recommendation.- The minimum E1RP of the
power control range should be afunction of the channel mte
and the s~tellite beam characteristics to minimize the
intefletente potential.
4.2.3.5.4 Carrier-of level. The EIRP in any direction,
summed across the 1 626.5 to 1 660.5 MHz band, when all
carriers are cominanded off shall be -24.5 dBW or less.
4.2.3.5.5 log-on EIRE When logging on to a GES, the
EIRP of the AES shall be at lcast 12.5 dBW.
4.2.3.5.6 In-band spurious EIRP When transmitting a
modulated carrier at any level up to the maximum allowable
operating EIRP, the composite radiated in-band spurious and
noise EIRP (excluding intermodulation products) referenced to
a 4 kHz band shall not exceed -55 dBc. This requirement shall
not apply to the frequency band on either side of the carrier
centre frequency which is described in 4.3.2.1.
4.2.3.5 ~ N s M ~ E R
REQUIREMENTS
4.2.3.5.7 INTERMODULATION PRODUCTS
4.2.3.5.1 EIRP U M ~ S
4.2.3.5.1.1 For low gain antenna operation, the minimum
value of EIRP per carrier in the direction of the satellite, when
commanded to the maximum setting, shall be 13.5 dBW. The
ETRP radiated in any direction shall not exceed 22.8 dBW.
3.2.3.5.1 .I bis For intermediate gain antenna operation,
the minimum value of EIRP per carrier in the direction of the
satellite, when commanded to the maximum setting, shall bc
4.2.3.5.7.1 For multicarrier AES, the radiated intermodulation
prod~icts shall not cause harmful interference to
satellite navigation receiver operation where such receiver is
operated on the same aircraft when transmitting two equal
carriers with a total power equal to the maximum allowable
operating EIRP of the AES.
* All tables are located at the end of this chapter.
2/11/00
No. 75
Part Z Annex 10 - Aeronautical Telecommunications
4.2.3.5.7.2 The AES transceiver shall not transmit on a
newly assigned frequency that would produce a fifth-order
intermodulation product at a frequency below 1 610.0 MHz.
4.2.3.5.7.3 Frequency management techniques shall be
used to preclude 5th and lower order intermodulation products
below 1 610 MHz being radiated by the AES.
4.2.3.5.8 Out-of-band EIRP density levels. When
transmitting a carrier at any level up to the maximum power
level as described in 4.2.3.5.1, the out-of-band EIRP including
spurious, harmonics and noise generated by the AES in any
direction shall not exceed the levels shown in Table 4-3.
4.2.3.5.8.1 Recommendation.- The EIRP densily
should not exceed -140 dBc/l MHz from 1 605 to 1 610 MHz.
4.2.3.5.9 Phase noise. The phase noi.se induced on a
modulated carrier shall have a power spectral density not
exceeding the envelope defined in Table 4-4.
4.2.3.5.10 Transmitter Doppler rate. The maximum rate
of change of the frequency of the transmitted signal when
compensated for aircraft acceleration in the direction of the
satellite shall not exceed 15 Hz per second. The Doppler
adjustment resolution shall not exceed 10 Hz and the
associated frequency changes shall be made without
introducing phase discontinuity into the transmitted signal.
4.2.3.5.11 AMSS transmissions shall not cause harmful
　
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