Satellite has deployable VHF crossed Yagi antenna

Satellite has deployable VHF crossed Yagi antenna

 

NORsat-2 in space deploying its antenna. (Credit: Space Norway AS)

NORsat-2 in space

NORsat-2 in space deploying its antenna. (Credit: Space Norway AS)

Radio amateurs Sean Hum VA3SHV and Jeff Nicholls VA3NGJ worked on the design for a deployable VHF crossed Yagi antenna on the recently launched NORsat-2.

The very high frequency (VHF) antenna was designed to unfold from the CubeSat after receiving a command from the Norwegian Space Center to deploy once in orbit. “This antenna is a completely new type of deployable antenna — it unfolds to be more than three times as large as the satellite that took it into orbit,” says Hum. “This is the first time that a deployable antenna of this type has been contemplated and successfully used as a main mission antenna for a CubeSat.”

On July 20, cameras on board the CubeSat confirmed the successful deployment of the antenna.

Read the full story at http://news.engineering.utoronto.ca/u-t-engineering-designed-cubesats-novel-deployable-antenna-launched-orbit/

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2M0SQL Satellite Report

2M0SQL Satellite Report

 

Peter 2M0SQL says that instead of submitting reports to magazines about his satellite activity he’s decided to write blog posts instead allowing more viewers to see what can be worked.

He recently moved to Elgin in Scotland and as a result his DXCC/VUCC totals were reset to zero, so he’s trying to focus on working as many new grid squares and countries as possible.

Although with no real fixed permanent setup at his new QTH he has still made 158 contacts using 11 satellites. Among the notable contacts in July were those with Gabe Zeifman NJ7H who operated from Iceland, the Faroe Islands and then Greenland.

Read the 2M0SQL July Satellite Report at
http://www.2e0sql.co.uk/2017/08/01/july-satellite-report/

Follow Peter on Twitter at https://twitter.com/2m0sql

Peter gave a talk on Portable Satellite Operation to the 2016 AMSAT-UK International Space Colloquium, watch the video at
https://amsat-uk.org/2016/09/07/video-of-portable-satellite-operation-talk/

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Press reports ISS success of Chertsey Radio Club

Press reports ISS success of Chertsey Radio Club

 

International Space Station

International Space Station – Image Credit NASA

The Surrey press report radio amateurs at the Chertsey Radio Club received test transmissions by two satellites inside the International Space Station (ISS). The club also received ISS Slow Scan Television images.

On July 5, the Space Station sent greeting messages in Russian, English, Spanish and Chinese, which were picked up by club members. The messages were sent during test transmissions from two small educational Russian amateur radio satellites, known as Tanusha-1 and Tanusha-2. They will be deployed from the ISS during a spacewalk in August.

As part of the celebrations for the 20th Anniversary of Amateur Radio on the International Space Station (ARISS), the ISS sent a set of 12 images using slow scan television (SSTV). The transmissions took place over four days from July 20.

Chertsey Radio Club member James Preece M0JFP was able to receive the signal and convert them into images using a Raspberry Pi 3.

Read the article at
http://www.getsurrey.co.uk/news/surrey-news/surrey-radio-enthusiasts-make-contact-13396651

Chertsey Radio Club ISS SSTV on Raspberry Pi
http://chertseyradioclub.blogspot.co.uk/2017/07/iss-sstv-decoded-on-raspberry-pi3.html
http://chertseyradioclub.blogspot.co.uk/2017/07/iss-sstv-0058-uk-celebrating-20-years.html

Follow Chertsey Radio Club https://twitter.com/chertseyRC

Summer is a great time to get publicity for amateur radio
http://www.southgatearc.org/news/2017/june/summer-is-a-great-time-to-get-publicity-for-ham-radio.htm

What is Amateur Radio? http://www.essexham.co.uk/what-is-amateur-radio

Find a short Amateur Radio Foundation training course at https://thersgb.org/services/coursefinder/

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437 MHz Sprite satellites deployed

437 MHz Sprite satellites deployed

 

437 MHz Sprite Satellite

437 MHz Sprite Satellite

Scientific American magazine interviews radio amateur Zac Manchester KD2BHC in the article Breakthrough Sends Smallest-Ever Satellites into Orbit.

On June 23, 2017 six tiny satellites were sent into low-Earth orbit as secondary payloads on the Venta and Max Valier satelites that were launched on the Indian PSLV-C38 rocket. These six satellites are comparatively dainty, but punch far above their weight. Called “Sprites,” each is a 4-gram flake of circuit-board just 3.5 centimeters on a side, packing solar panels, computers, sensors and communications equipment into an area equal to a U.S. postage stamp.

One Sprite apiece is attached to the outside of each mothership — the Latvian Venta satellite and the Italian Max Valier satellite, the latter of which also holds four additional Sprites awaiting deployment into space as wholly independent spacecraft. Radio telemetry from minuscule magnetometers and gyroscopes on the deployed Sprites would then be used to track the spacecraft as they shift, spin and tumble, to better understand their orbital dynamics.

Signals on 437.325 MHz from at least one of the exterior-mounted Sprites have been received in California and New York.

Read the Scientific American article at
https://www.scientificamerican.com/article/reaching-for-the-stars-breakthrough-sends-smallest-ever-satellites-into-orbit/

Zac Manchester KD2BHC had 104 Sprite satellites launched into orbit on board KickSat-1 on April 18, 2014 but the Sprites failed to deploy
https://amsat-uk.org/2014/04/18/successful-launch-of-kicksat-carrying-104-sprite-satellites/

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