The increase in the volume of data transmitted from ships to shore means for shipowners and managers the need to upgrade satellite communication antennas to more powerful ones. Today, VSAT marine antennas have low power supplies of about eight watts or less in order to maintain their low weight. This is enough to connect the VSAT equipment operating in the transmission mode of the standard downstream ship traffic, but not enough to increase the upstream traffic transmitted from the ship to the satellite.
In order to adapt the equipment to higher data rates on the uplink, antenna manufacturers can install high power supplies, which leads to an increase in the total weight and size of the antennas. However, Cobham Satcom has developed a 20-watt power supply with the same dimensions and weight as the 8-watt one. The device was included in the high-power version of the Cobham Satcom Sailor 900 VSAT equipment. Continue reading
The first batch of Iridium Next satellites, the total number of which is 81, will soon leave the design base to go into space on SpaceX Falcon 9 missiles in September. The satellites will deliver in pairs in military trucks to Vandenberg airbase, where it will launch from September 11 to September 12 2016 year. This will be the third Falcon 9 flight from Vandenberg base and the first launch from there with a modernized version of the launch vehicle with more powerful Merlin engines and super-cooled rocket fuel. SpaceX will deliver a modified version to the launch pad at the end of summer.
The assembly of the first two Iridium Next satellites was completed last month and now Iridium plans to produce one satellite per week until the end of 2017.
“The release of one satellite per week is a truly impressive achievement in satellite production and something new that people will strive for in the future,” said Frank Culbertson, president of Orbital ATK, who oversees the final assembly of Iridium Next by agreement with the general contractor Thales Alenia Space. Continue reading
Many of those who read these lines, probably, can recall those already quite distant times when the first satellite dishes began to appear on balconies and roofs of houses in our cities. Each such dish (or parabolic antenna) was, in some way, a landmark of the region – they looked at them with envy, and their owners were considered demigods. For these same owners of such plates had at their disposal a wide open window to another world – the world of multi-channel television. However, people who were not initiated, as a rule, did not really know how many channels the owner of such an antenna could receive, but all the same, they envied and were sure that there were “a lot”.
Years passed – the plates were reduced in size, overgrown with various additional “lotions” such as multifidov, motor suspensions and other gadgets. And cheaper, they grew in clusters on the roofs and walls of buildings, gradually turning from a luxury item into an ordinary household item, into the necessary and only available (for many viewers) television viewing tool. Which also continued to evolve, turning from analog to digital, increasing the number of pixels in the picture and sound quality and transforming into new forms.
In parallel with the technological plan, other means of delivering electronic data from one point to another — cable, terrestrial broadcasting, and the Internet — have also evolved. In particular, the latter. The speeds increased, the Continue reading