Exhibits 1 - 4

5449-EX-MR-1996 Text Documents

COMSAT RSI, INC.

1999-07-22ELS_11293

Exhibit 1 Station KM2XRE Item No. 4 of Form 442 Frequency Power (ERP)* Emission Modulating Necessary (A) (C—D)** (E) Signal*** Bandwidth (kHz) (F) (G) 137 — 138 MHz 4W NON N/A 1 kHz 4W 2KOOAZN 27.8 kHz 2 kHz 148 — 150.05 MHz 4W NON N/A 1 kHz 4W 2KOOAZN 27.8 kHz 2 kHz 1030 MHz 400 kW 20KOPON 1 ms pulse 20 kHz @ 100 kHz 1260.75, 1307.7, 4W NON N/A 1 kHz 1353.75, 1400 4W 2KOOAZN 27.8 kHz 2 kHz MHz *4(B) Output power for each frequency is 0 dBm, except for 1030 MHz, which is 10 kW. **4(D) ERP for all frequencies is "mean," except for 1030 MHz, which is "peak." ***4(F) The value given is the maximum audio modulating frequency.

Revised Exhibit 1 COMSAT RST/Arcola Station KM2XRE Item No. 4 of Form 442 August 18, 1997 Frequency Power (ERP)® Emission Modulating Necessary (A) S ignal‘.‘ (C—D)" (E) Bandwidth (kHz) (F) (G) 136—216 MHz 100mW 8OMOFON 27.8 kHz 2 kHz 137 MHz 4W 2KOOA2N/ 27.8 kHz 2 kHz NON N/A 1 kHz 137.4 MHz 4W 2KOOA2N/ 27.8 kHz 2 kHz NON N/A 1 kHz 138 MHz 4W 2KOOA2N/ 27.8 kHz 2 kHz NON N/A 1 kHz 148 MHz 4W 2RKOOA2N/ 27.8 kHz 2 kHz NON N/A 1 kHz 149.2375 MHz 4W 2KOO0A2N/ 27.8 kHz 2 kHz NON N/A 1 kHz 150.05 MHz 2KOOA2N/ 27.8 kHz 2 kHz NON N/A 1 kHz 1030 MHz 400 kW 20KOPON 1 ms pulse 20 kHz @ 100 kHz 1260.75,1307.7, 4W NON N/A 1 kHz 1353.75,1400 — 4W 2KO0OA2N 27.8 kHz 2 KhZ MHz ‘4(B) Output power for each frequency is 0 dBm "4(D) ERP for all frequencies is "mean" The value given is the maximum audio modulating frequency L .‘4(F) ## DCOL/KINNR/46330.41

Exhibit 2 Station KM2XRE Item No. 6(a) of Form 442 Beamwidth at the Half—Power Point Frequency Half—Power (MHz) Beamwidth 137—138, 148—150.05 20° 1030 2.7° 1260.75, 1307.7, 1353.75, 1400 5.5°

Revised Exhibit 2 COMSAT RSH/Arcola Station KM2XRE Item No. 6 of Form 442 August 18, 1997 Beamwidth at the Half—Power Point Frequency (MBHz) Half Power Beamwidth 136—216 20° 137, 137.4, 138, 148, 149.2375, 150.05 20° 1030 2.17° 1260.75, 1307.7, 1353.75, 1400 5.5° ## DCOL/KINNR/46330.41

Exhibit 3 Station KMZ2XRE Item No. 10 of Form 442 At the Arcola, Virginia location, COMSAT RSI intends to assemble and fabricate antenna systems at the various frequency bands as described below. COMSAT RSI desires to use these frequencies to verify proper operation of the antenna system and/or components after the assembly process. The majority of the testing will be the verification of the antenna radiation pattern. These antenna systems are to be developed for a variety of applications and customers. 137.0 — 138.0 MHz For UHF Satellite Communications antennas 148.0 — 150.05 MHz For UHF Satellite Communications antennas 1030 MHz For high power testing of IFF, air traffic control antennas 1260.75 MHz For L—Band Radar antennas 1307.7 MHz For L—Band Radar antennas 1353.75 MHz For L—Band Radar antennas 1400.0 MHz For L—Band Radar antennas

Revised Exhibit 3 COMSAT RSI/Arcola Station KM2XRE Item No. 10 of Form 442 August 18, 1997 Testing at 136—216 MHz: COMSAT RSI has been awarded a contract to produce a number of 16—element crossed—dipole arrays which will operate in a 28—foot radome. This antenna will be used in the ground segment in a communications system developed by ORBCOMM to provide wireless packet data services optimized for short message transfer via satellite links. The space segment will consist of 28 to 36 satellites referred to as ORBCOMM Space Vehicles in polar orbits of about 730 km. These orbits are considered "Low Earth Orbits" making the system a LEO—based system (in this case a little LEO—based system). The role of the ground segment is to process message traffic within a specific geographic territory (such as a country or region), and to provide interconnection between the system and the various public and/or private data networks within the territory. The ground segment will consist of a number of ORBCOMM Gateways, to be located strategically throughout the world. The Gateway Earth stations (GES) consist of medium gain tracking antennas, RF and modem equipment, and communications hardware to send and receive packets. The GES are fully redundant and designed for unattended operation. The GES use two (separate) radome—enclosed VHF antennas which will be supplied by COMSAT RSI. The system is designed to operate in the 137—138 MHz and 148—150.05 MHz frequency bands. The downlink from the satellites to the GES is in the 137—138 MHz band. The transmissions to the satellites occur within the 148—150.05 MHz band. COMSAT RSI has received an approval for an STA for low power testing of these antennas to determine their radiation patterns at single specified frequencies (call sign KK2XFV, File No. S—2776—EX—97). However, there are sufficient reflections from the surrounding environment (trees, ground, etc.) that can cause significant errors in the patterns. Continued authority to.use a different technique whereby a signal is swept over a large frequency band (136 to 216 MHz) is requested in order that the reflections can be gated out of the measurement and hence improve the accuracy of the measurement. In essence, the larger the frequency span the more resolution—there is to the gating of the range reflection. This allows gating of reflections from objects that are located close to the test area. A low level RF carrier is swept from 136 to 216 MHz at approximately a 100 ms rate to allow time domain gating out of the range reflections. This procedure, operated pursuant to a modification to the STA referenced above and dated May 9, 1997, has allowed demonstrably more accurate antenna pattern and gain measurements to be made on the ORBCOMM antenna. ## DCOL/KINNR/46330.41

Revised Exhibit 3 continued Testing at 137.0, 137.4, 138.0, 148.0, 149.2375, and 150.05 MHz: COMSAT RSI is currently carrying out antenna design and testing for various projects under special temporary authority Call Sign KK2XFV, File No. $—2976—EX—97. Under this license, COMSAT RSI tests new antennas in receive—mode only. Testing will verify proper operation after assembly. The principal tests involve verification of the antenna radiation patterns. Testing at 1030, 1260.75, 1307.7, 1353.75, and 1400 MHz: COMSAT RSI is currently assembling and fabricating antenna systems at the various frequency bands as described below, under license Call Sign KK2XFV, File No. 5449—EX— ML—96. COMSAT RSI desires to continue to use these frequencies to verify proper operation of the antenna system and/or components after the assembly process. The majority of the testing is the verification of the antenna radiation pattern. These antenna systems are to be developed for a variety of applications and customers. 1030 MHz For high power testing of IFF, air traffic control antennas 1260.75 MHz For L—Band Radar antennas 1307.7 MHz For L—Band Radar antennas 1353.75 MHz For L—Band Radar antennas 1400.0 MHz For L—Band Radar antennas ## DCOL/KINNR/46330.41

Exhibit 4 Station KM2XRE Item No. 15 of Form 442 Different portions of the Arcola test range will be used to conduct the experimental operations for which modified authority is sought. In response to subparts 15(a) and (b), the overall height above ground to tip of the antenna (HAAG), and the elevation of the ground at the antenna site (HGAMSL), respectively, are given below. In response to 15(c), the distance to the nearest aircraft landing area for all three sites is at least 2.2 kilometers. Finally, in response to 15(e), site profiles are provided as Figures 4—a to 4—c, and relate to operations at the different frequencies as indicated below. Frequency (MHz) HAAG (m) HGAMSL (m) Site profile 137—138, 148—150.05 7.6 108.2 Fig. 4—a 1030 6.1 91.4 Fig. 4—b 1260.75, 1307.7, 24.4 89.9 Fig. 4—c 1353.75, 1400.0 or 6.1 91.4 Fig. 4—b

AIRCRAFT WARNING LIGHT 60‘ ANTENNA ————————;//T(/WHAMQw & 45° 385‘ 335° ORBCOMM RANGE Figure 4—a

1« 340—+— +340 TEST HEIGHW: s20—1— _ +320 ‘ER HEIGHT 3a16—— ~ _z ~ TENTATIvE SsounRce HEIGHKTS 300'—[— 300 q—p oinbta % T T T T \/\ T T T t—t T 290° 0 20 40 60 80 1560 14580 1600 1615 1620 1640 RANGE NO. 1 (FAA) CONFIGURATION

oel. _ g— 383 TEST HEKNT —_ _A j l i__ 380 . + _ / 7 ; _z +0 340 MAY FENTATINE is | <——___ /-‘- * SOuACE HEIGATS ”j: m i —L 340 ‘, TENTATIVE FENCE LOCATIONS §0° AArx . NEKur» 6Fr , 0 mAces — 320 J ——C" _ as l —» ><_ 1|soo \. | 1220 zo mso 2300 | t T T T _T T T T~ T 1t —I 280 0 2 4 6 F 000 it 14 ib 4B 2000 rr . :4 :6 cB sX0 3100 Vertical Profile CONFIGURATION J—p oinbtd

Revised Exhibit 4 COMSAT RSUArcola Station KM2XRE Item No. 15 of Form 442 August 18, 1997 Different portions of the Arcola test range will be used to conduct the experimental operations for which modified authority is sought. In response to subparts 15(a) and (b), the overall height above ground to tip of the antenna (HAAG), and the elevation of the ground at the antenna site (HGAMSL), respectively, are given below. In addition, in response to 15(e), site profiles are provided as Figures 4—a to 4—c, and relate to operations at the different frequencies as indicated below. Frequency (MH2z) HAAG (m) HGAMSL (m) Site profile 136—216 18.9 108.2 Fig. 4—a 137—138, 148—150.05 7.6 108.2 Fig. 4—a 1030 6.1 91.4 Fig. 4—b 1260.75, 1307.7, 24.4 89.9 Fig. 4—¢ 1353.75, 1400.0 or 6.1 91.4 Fig. 4—b ## DCO/KINNR/46330.41

Piqgure 4—a 19NV3 WWOD8%0 SCC ASC + «2 ETW I:n T .BCC .09 L9 onbama inaguiv ——

340—+— L340 rest neigw: 3204+ + 320 1E16HT 316—+— IEnFAlisE SouAc Ee nE n1 5 * 3100 + 300 rg s. 1'7 T T T ~1 *\/L ~— ~T T t T 290° fi 0 20 +0 , 60 80 1560 1580 , 1600 1615 1620 1640 ® w 1 o RANGE NO. 1 (FAA) CONFIGURATION

‘4—= el 383 F”o I TEST j HE LW L 1 1 i on‘ h l 4 I _iz +110 40 MA* TE nTAIreg _ / TT l J iofi SOuM E HELGATS ~I ~——— + 140 '\ 1435 | \\ \ \ & FenTATIVE FENCL LOCATiON3 q0‘ aar. NEKNT + 6FT , 6 M ACES —+— 320 S urs | +100 4 |P mzo°~__ uze mssT ipoT j —" T T T T T T T T T T T 1t—t—7 +003 0 2 4 & 8 1000 it os4 iB 43 2000 arr ; :4 :6 ca sxo 3100 Vertfcal Profile COIFYTARATION O—p oxmbta


Document Created: 2001-08-21 11:09:00
Document Modified: 2001-08-21 11:09:00
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC