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C-band Spectrum Reallocation: Too Lucrative to Ignore? - NSR Oct 2018
"While various countries have already implemented several measures to either purchase or forcefully take the band from satellite operators and auction off to telecom operators, the case in U.S. has been more uncertain until last year."

"The majority rights holders to 3.7-4.2 GHz of spectrum in the U.S. are Intelsat and SES, two major, global satellite operators in terms of in-orbit satellites and transponders leased. They account for almost ~90% of the U.S. C-band spectrum and service various cable customers across the U.S. for video distribution. However, with spectrum rights expected to expire in mid 2020s and YoY performance on the C-band U.S. business declining fast"

"with the new compression HEVC using DVB-S2X, almost all video distribution channels could fit in under 30% of Ku-band satellite capacity."
NSR  satellite  cellular  C-band  Intelsat  SES 
3 days ago by pierredv
Does the satellite industry have antenna deficit disorder? - Oct 2018
"To connect the masses, megaconstellations will need mega antennas mega cheap. Antenna makers need mega orders to make that happen."

David Hartshorn: “There are business plans, big ones, hanging out there that depend if not entirely then at least to a very large extent on the availability of high-performance, low-cost, high-volume, low-profile antennas,”

"Northern Sky Research expects companies to ship 1.8 million flat panel antennas between now and 2027 with revenues topping $8 billion for the decade."

"For years, antenna manufacturers have produced high-performance alternatives to gimbaled parabolic antennas pointed at geostationary communications satellites. Price tags range from a few thousand dollars to $250,000 depending on the application."

"To work with low Earth orbit constellations, the antennas need to track two or more satellites simultaneously — something parabolic dishes can’t do. They also need to be small and durable, prevent signal interference, instantly find satellites and secure links, degrade gracefully and have great signal efficiency.

“It turns out that according to the laws of physics, you cannot do all those things at the same time,” said Ralph Brooker, president of SatProf"

John Finney, Isotropic: “What OneWeb wants in terms of target price is in the very low hundreds of dollars. We see a way to get there.”
satellite  constellations  antennas  NGSO  SpaceNews  business  NSR 
3 days ago by pierredv
History of the formerly top secret KH-9 Hexagon spy satellite
"...the last film based reconnaissance camera, ... was known by experts in the field as “the most complicated system ever put up in orbit.” It provided important intelligence for the United States government and was the reason that President Nixon was able to sign the SALT treaty, and when President Reagan said “Trust but Verify” it provided the means of verification. Each satellite weighed 30,000 pounds and carried two cameras thereby permitting photographs of the entire landmass of the earth to be taken in stereo. Each camera carried up to 30 miles of film for a total of 60 miles of film. Ultra-complex mechanisms controlled the structurally “wimpy” film that traveled at speeds up to 204 inches per second at the focal plane and was perfectly synchronized to the optical image."
satellite  surveillance  camera  SALT_Treaty  Nixon  Regan  film  imaging  Earth  security 
4 days ago by Tonti
Antenna builder ThinKom makes push for constellation market - Oct 2018
"ThinKom tested a phased array antenna with SES in August, practicing links with O3b satellites in medium Earth orbit as they rose over the horizon and then tracking them for 30 minutes each.

"Last month, ThinKom and Telesat announced plans to test an antenna with a Telesat prototype satellite in low Earth orbit (LEO) and to collaborate on business-grade terminals for Telesat’s planned 120-satellite LEO constellation. "

"The absence of such flat-panel antennas, as constellations start launching and high-throughput geostationary satellites grow in number, has satellite operators “all pretty much desperate to see somebody bring a solution to market,” according to Chris Quilty, president of Quilty Analytics. "

"ThinKom is best known for its ThinAir Ku3030 antennas that inflight connectivity provider Gogo builds into its 2Ku airplane Wi-Fi terminals. ... Bill Milroy, ThinKom’s chairman and chief technical officer, said his company intends to use the same phased array technology it has used for antennas on aircraft "

"SES is attempting to cultivate commercially viable flat-panel antennas for O3b mPower, its next-generation constellation, having contracted with Viasat, Alcan Systems and Isotropic Systems last year to build electronically steered antennas. "

"ThinKom’s approach differs from SES’s other three partners in that its antennas don’t use electronic steering, despite being relatively flat. The aeronautical antenna it is testing with SES is 20 centimeters thick and uses mechanical systems to track satellites. "

"Whereas a ThinKom antenna requires around half a second to switch satellites, an electronically steered antenna has the potential to switch in microseconds"

"ThinKom is targeting $10,000 for enterprise, or business-grade, terminals. ... For consumer terminals, ThinKom is targeting “sub-$1,000” prices."
ThinKom  SES  MEO  NGSO  satellite  antennas  Telesat  O3b  LEO 
4 days ago by pierredv
SES’s future GEO satellites will be more like O3b, CEO says -
SES は衛星オペレーターからネットワークプロバイダーになろうとしていると。
satellite  business 
7 days ago by summerwind
Report of the DSLWP-B Amateur observations of the Moon and Earth – Daniel Estévez
Report of the DSLWP-B Amateur observations of the Moon and Earth
The Chinese microsatellite DSLWP-B has been in lunar orbit since 25 May 2018. This satellite carries an Amateur radio payload which includes a small 640×480 CCD camera. The JPEG images taken by the camera can be transmitted using the SSDV protocol at 125 bits per second in the 70cm Amateur satellite band.

Update 17:00 UTC: Wei comments that the camera sensor is CMOS, not CCD, and it has 2592×1944 pixels. The image is r...
hamradio  satellite  china  中国  technology 
8 days ago by dcowhig
LeoSat and partners put satellites on a diet - Oct 2018
"“If we can get the number of required launches down from 14 to seven or from 12 to six, we could make savings that take the $3.5 billion plus down to close to $3 billion,” Rigolle said. “If the per unit cost of building the satellites could be pushed down by a few million a piece, it chips at the cost and improves the total viability of the project.”"
LeoSat  business  satellite  SpaceNews  NGSO  constellation 
8 days ago by pierredv
Analysts see demand for two or three megaconstellations - Oct 2018
"While there may be enough customer demand for two or three megaconstellations, it will be difficult for the ventures to attract enough financing, according to analysts speaking at the Satellite Innovation conference here."

Chris Quilty, president of Quilty Analytics, a financial services firm based in St. Petersburg, Florida, sees demand for two or three constellations serving distinct markets like broadband and machine-to-machine communications."

"Nick Flitterman, co-founder and telecommunications head for Portland Advisers, a financial advisory firm based in the United Kingdom and Hong Kong, sees global demand for two or three megaconstellations but said it will be difficult to finance that many."
SpaceNews  satellite  NGSO  constellations  investing  finance  business 
11 days ago by pierredv
Satellite Big Data 3L’s: Location, Location, Location — NSR's Big Data Analytics , Satnews Daily Sep 2018
Article by Shivaprakash Muruganandham, NSR Analys

"NSR’s Big Data Analytics via Satellite, 2nd Edition report identifies seven vertical markets as growth areas, and more than 70 percent of the share is held by the Transportation, Government and Military (Gov/Mil) and Energy markets throughout the forecast period."


"The mobile nature of the transportation segment ensures that it remains important throughout the next decade, with nearly 1 out of every three dollars spent on SBD coming from land, maritime and aeronautical transport segments."

Government & Military

"NSR finds growth in this sector to be largely driven by the rise of geospatial intelligence (GEOINT), with EO applications growing at nearly twice the rate of M2M/IoT SATCOM applications"


"M2M/IoT SATCOM will continue to play a major role in Energy, due to the remote nature of asset locations and the absence of terrestrial solutions."

"NSR’s considers that EO satellite-based analytics services are expected to grow in importance for this vertical, despite competition from unmanned aerial system (UAS) alternatives. This growth will be fueled by the rise of new sensing capabilities such as methane tracking and emissions monitoring solutions for O&G companies looking to mitigate financial risks."
NSR  market-research  satellite  data-analytics  Satnews  EO  remote-sensing  UAS 
12 days ago by pierredv
LHCP Helical L-Band Feed (1550mhz center) by Tysonpower - Thingiverse
This is a LHCP L-Band Feed with a center frequency of 1550mhz.
amateur  antenna  ham  radio  rf  satellite  sdr 
17 days ago by mwishek

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