[time-nuts] Fwd: CGSIC: FW: The next GPS Launch

Magnus Danielson magnus at rubidium.dyndns.org
Tue Jul 29 14:46:47 EDT 2014


It has delayed the launching of birds, as the old ones does not die of 
quick enough for the planned schematic to maintain 24 birds, instead we 
see 30-32 birds active for many years, and some being "off air" backups.

On the other hand, it gives more time to adjust the new birds with new 


On 07/29/2014 08:42 PM, John Allen wrote:
> Hi Magnus et al - just FYI: 2 1/2 times the design lifetime is not unusual
> for satellites.  More of the Ham Oscar satellites have exceeded their
> lifetime by that much or more.  (Sorry, no facts handy).
> It saves us USA taxpayers money when they last that long!
> Regards, John K1AE
> ----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Magnus Danielson
> Sent: Tuesday, July 29, 2014 2:12 PM
> To: Discussion of precise time and frequency measurement
> Subject: [time-nuts] Fwd: CGSIC: FW: The next GPS Launch
> Fellow time-nuts,
> Things will shift in the sky. Lot's of changes.
> SVN-33 is being decommissioned after 17.5 years of operation, with a 7 years
> designed lifetime, that's 2.5 times the operational lifetime, and it's being
> decommissioned in a controlled fashion. Respect.
> Cheers,
> Magnus
> -------- Original Message --------
> Subject: CGSIC: FW: The next GPS Launch
> Date: Tue, 29 Jul 2014 17:23:10 +0000
> From: Civil Global Positioning System Service Interface Committee
> (CGSIC) <cgsic at cgls.uscg.mil>
> Reply-To: cgsic at cgls.uscg.mil
> To: cgsic at cgls.uscg.mil <cgsic at cgls.uscg.mil>
> All CGSIC:
>       The Air Force is set to launch the 7th GPS IIF satellite from Cape
> Canaveral Air Force Station in Florida.
> Delta IV GPS IIF-7 Mission Overview:
> Atlas V GPS IIF-7 Mission Brochure:
> http://www.ulalaunch.com/uploads/docs/Mission_Booklets/AV/av_GPSIIF7_MOB.pdf
> Rocket/Payload: An Atlas V 401 will launch the GPS IIF-7 mission for the
> U.S. Air Force.
> Date/Site/Launch Time: Friday, Aug. 1, 2014, from Space Launch Complex
> (SLC)-41 at Cape Canaveral Air Force Station, Fla. The 18-minute launch
> window opens at 11:23 p.m. EDT.
> Viewing the Launch by Webcast: The live webcast will begin at 11:03 p.m.
> EDT.
> GPS IIF-7 is one of the next-generation GPS satellites, incorporating
> various improvements to provide greater accuracy, increased signals, and
> enhanced performance for users.
> Launch Updates: To keep up to speed with updates to the launch countdown,
> dial the ULA launch hotline at 1-877-852-4321 or join the conversation at
> www.facebook.com/ulalaunch and twitter.com/ulalaunch; hashtag #GPSIIF7.
> The Air Force Second Space Operations Squadron indicates that IIF-7,
> SVN-68/PRN-3, will replace SVN-43 in the F plane slot 3 (F3).  SVN-43 will
> be re-phased from F3 to the F2F slot to replace SVN-26.  SVN-33 will be
> taken out of the operational constellation the day after SVN-68 launch and
> sent to Launch, Anomaly and Disposal Operations (LADO).  SVN-33 was launched
> on 09 April 1996 successfully serving over 17.5 years, 10.5 years beyond its
> design life, due to the diligent efforts of the men and women of the U.S.
> Air Force. SVN-26 will back-up SVN-43 once it completes its re-phase
> journey.
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