Request for Experimental Authority Narrative

0540-EX-PL-2016 Text Documents

Iridium Satellite LLC

2016-08-04ELS_180322

FCC Form 442 Exhibit 1 Request for Experimental Authority Iridium Satellite LLC (“Iridium”) herein requests experimental authority to demonstrate and test earth station facilities in connection with Iridium’s non-geostationary satellite orbit space station constellation (Call Sign S2110) in the manner described below. Iridium seeks authority for a period of twenty-four (24) months. The thirty (30) earth station terminals are proto-type terminals that will be divided into ten (10) units, fixed to the building, at each location. The proposed experimental earth station terminals will use electronic beam forming technology. The project will enable Iridium to validate this electronic beam forming technology and Waveform(s) and Extended waveform(s) on the space station constellation. Necessary Bandwidth Description The necessary bandwidth is determined by the frequency channelization that Iridium uses and is filed with other Iridium licenses. The frequency of a center of an Iridium channel can be calculated by this equation. There are 270 channels numbered 1 to 270 for transmit and 7 more that are receive only. 𝑐𝑐ℎ𝑎𝑎𝑎𝑎𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓 = 1616 × 106 + �(41.6666 × 103 ) × �(𝑐𝑐ℎ𝑎𝑎𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛𝑛 − 1) + 0.5�� 𝑀𝑀𝑀𝑀𝑀𝑀 Directional Antenna Information The antenna consists of multiple electronically steared beams so the azimuth can be in any direction. The typical beamwidth is 60 degrees. The maximum gain is based on elevation angle as per the table below. The gain is the total gain from the Transceiver Modem (BCX) component (input to antenna) which is max of 6dBm to reach the EIRP (dBW) the specified antenna Gain is used. Antenna Gain Angle over horizon EIRP 41.2 90 (overhead) 16.8 41.0 80 15.8 40.4 70 13.8 41.1 60 16.3 41.1 50 16.3 40.4 40 14 40.9 30 15.6 40.9 20 15.6 40.4 10 and below 13.8

FCC Form 442 Exhibit 1 Ground station locations: (1) SNOC 39° 05’ 19” N 077° 30’ 43” W 63061 Battery Point Pl Leesburg, Loudoun, VA (2) HQ 38° 55' 26.2" N 077° 13' 22.1" W 44330 Woodridge Parkway McLean, Fairfax, VA (3) TSC (33° 16’ 44.5” N 111° 53’ 26.9” W) 1800 South Price Road Chandler, Maricopa, AZ Table 1: Particulars of Operation Lower Upper Input Power ERP Mean/ Freq. Station Freq. Freq. (milliWatts) 1 (Watts) 2 Peak Tolerance Class (MHz) (MHz) (%) 1618.725 1626 1.0 4.8 Mean 0.0021 Fixed 1618.725 1626 1.0 4.8 Mean 0.0021 Fixed 1618.725 1626 1.0 4.8 Mean 0.0021 Fixed 1618.725 1626 1.0 20.2 Mean 0.0021 Fixed 1618.725 1626 1.0 40.4 Mean 0.0021 Fixed 1618.725 1626 0.45 9.0 Mean 0.0021 Fixed 1618.725 1626 0.45 9.0 Mean 0.0021 Fixed 1 NOTE: defined as the nominal mean power input from the BCX into the antenna. 2 NOTE: ERP (dBW) = EIRP (dBW) – 2.15 dB. Table 2: Emission Data Emission Designator Modulating Signal Necessary Bandwidth (KHz) 41K7Q7W 25,000 41.7 41K7Q7W 30,000 41.7 83KQ7W 60,000 83 333KQ7W 240,000 333.33 666KQ7W 480,000 666.67 333KQ7W 25,000 X 7 333.33 666KQ7W 25,000 X 14 666.67

FCC Form 442 Exhibit 1 Table 3: Waveforms and types of antennas used as well as the number of carriers Waveform Modulation Scheme Antenna Type Number of Carriers B1 (Block 1) DEQPSK LGA 1 C1 (NEXT) QPSK LGA 1 C2 (NEXT) QPSK LGA 1 1XC8 (NEXT) 16 APSK HGA 1 2XC8 (NEXT) 16 APSK HGA 2 B8 (open port) DEQPSK HGA 8 3 B16 (open port) DEQPSK HGA 16 4 3 th NOTE: Transmits 7 carrier signals. The highest carrier ( 8 ) is not used on uplink. 4 th th NOTE: Transmits 14 carrier signals. The 8 carrier and 16 carrier are not used on uplink.


Document Created: 2016-08-04 12:35:35
Document Modified: 2016-08-04 12:35:35
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