Jump to content
 







Main menu
   


Navigation  



Main page
Contents
Current events
Random article
About Wikipedia
Contact us
Donate
 




Contribute  



Help
Learn to edit
Community portal
Recent changes
Upload file
 








Search  

































Create account

Log in
 









Create account
 Log in
 




Pages for logged out editors learn more  



Contributions
Talk
 



















Contents

   



(Top)
 


1 Mission  





2 See also  





3 References  





4 External links  














Radar Fence Transponder






Deutsch
 

Edit links
 









Article
Talk
 

















Read
Edit
View history
 








Tools
   


Actions  



Read
Edit
View history
 




General  



What links here
Related changes
Upload file
Special pages
Permanent link
Page information
Cite this page
Get shortened URL
Download QR code
Wikidata item
 




Print/export  



Download as PDF
Printable version
 
















Appearance
   

 






From Wikipedia, the free encyclopedia
 


Radar Fence Transponder
Mission typeCommunications
OperatorU.S. Naval Academy
COSPAR ID2006-055C Edit this at Wikidata
SATCAT no.29661
Websitewww.usna.edu/Users/aero/bruninga/raft.html
Spacecraft properties
Launch mass3 kg (6.6 lb)
Start of mission
Launch date21 December 2006, 01:47 UTC
RocketSpace Shuttle Discovery
Launch siteKennedy LC-39B[1]
ContractorNASA
End of mission
Decay date30 May 2007
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Perigee altitude228 km (142 mi)
Apogee altitude254 km (158 mi)
Inclination51.6°
Period89.3 minutes
← OSCAR 59
OSCAR 61 →
 

Radar Fence Transponder (also called Navy-OSCAR 60orRAFT 1) was an amateur radio satellite that was developed and built for training purposes at the United States Naval Academy.[2] The 3 kg (6.6 lb) heavy RAFT had a cubic structure of 12.7 cm (5.0 in) edge length and therefore did not meet the Cubesat standard. Solar cells on all six sides of the satellite were used to supply energy. It had neither position control nor drive systems.

RAFT contained a receiver at 216.98 MHz for calibration experiments of the U.S. Navy Space Surveillance Radar. For amateur radio connections there was an AX.25 digipeater on 145.825 MHz with built-in speech synthesizer on board.

Two fixed antennas equipped with springs were used for communication and also as a separation system for the almost identical sister satellite MARScom. Furthermore, a 122 cm (48 in) long wire antenna made of 0.5 mm (0.020 in) nitinol wire for the 10 m amateur radio band was unwound on shortwave during the disconnection process, with which the satellite received signals in the PSK31 operating mode.[3]

Mission

[edit]

The satellite was released on 21 December 2006 with Space Shuttle Discovery (STS-116) from Kennedy Space Center, Florida.

On 30 May 2007, it was re-entered on Earth atmosphere.

See also

[edit]

References

[edit]
  1. ^ Gunter Dirk Krebs. "RAFT1 (NO 60, Navy-OSCAR 60) / MARScom (NMARS)". Gunter's Space Page. Retrieved 20 February 2020.
  • ^ United Nations Secretariat (17 September 2007). "Committee on the Peaceful Uses of Outer Space". Archived from the original on 20 October 2013. Retrieved 20 February 2020.
  • ^ U.S. Naval Academy Amateur Radio Club (22 November 2004). "Operations of RAFT in the amateur satellite service". Retrieved 20 February 2020.
  • [edit]
  • t
  • e

  • Retrieved from "https://en.wikipedia.org/w/index.php?title=Radar_Fence_Transponder&oldid=1229251301"

    Categories: 
    United States spacecraft stubs
    Spacecraft launched by the Space Shuttle
    Amateur radio satellites
    Spacecraft launched in 2006
    Hidden categories: 
    Articles with short description
    Short description is different from Wikidata
    Articles needing additional references from February 2020
    All articles needing additional references
    Use American English from February 2020
    All Wikipedia articles written in American English
    Use dmy dates from February 2020
    All stub articles
     



    This page was last edited on 15 June 2024, at 19:03 (UTC).

    Text is available under the Creative Commons Attribution-ShareAlike License 4.0; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization.



    Privacy policy

    About Wikipedia

    Disclaimers

    Contact Wikipedia

    Code of Conduct

    Developers

    Statistics

    Cookie statement

    Mobile view



    Wikimedia Foundation
    Powered by MediaWiki