From: LARRY KLAES (ljk4@msn.com)
Date: Tue Dec 10 2002 - 13:49:07 PST
----- Original Message -----
From: Larry Kellogg
Sent: Monday, December 09, 2002 4:30 PM
To: lunar-update@lists.arc.nasa.gov
Cc: Larry Kellogg
Subject: Briefing Message for Pioneer 10 Downlink Only Support on DOY 340 at DSS-63
Good Monday morning here. As predicted, I have been busy with other
tasks and have not passed anything to you folks for some time. Hope
you are on enough lists to keep you informed.
Would like to pass a bit about some local activity.
We had an up-link track for Pioneer 10 last week and a down-link
track with Spain about 22 hours and 24 minutes later. Spain saw the
down-link but was unable to lock up on telemetry. It was about -183
dbm down and below their noise threshold coming at them from an
elevation of about 26 degrees above the horizon.
Goldstone had radiated a carrier for the uplink at about 326 KW and
it appears that Pioneer 10's transmitter power may be somewhat less
than 8 watts for the return broadcast.
Maybe after 30 years is getting a bit tired. Will wait and see if
another track can be arranged early 2003.
The SETI folks at Arecibo tracked the Pioneer 10 down-link and Peter
Backus sent Dave Lozier to plots like he did before. I can forward
the post to anyone that hasn't seen what a trace looks like or just
collects Pioneer 10 items. :-)
http://www.naic.edu/
A Space.com article (with pop ups) from a previous 30 year anniversary track.
http://www.space.com/searchforlife/seti_diary1_020307.html
Thanks for listening and continuing to look up.
Larry Kellogg
==========================================================
>Subject: Briefing Message for Pioneer 10 Downlink Only Support on DOY 340
> at DSS-63
>Date: Tue, 3 Dec 2002 06:57:59 -0800
>X-Mailer: Internet Mail Service (5.5.2656.59)
>
>ROUTING: JFTL / JJPL / JOCC / JGTS / ANBE / LRID
>
>FROM: JFTL / MPSETA / I MILLNER
>
>SUBJECT: Briefing Message for Pioneer 10 Downlink Only Support
> for DOY 340 at DSS-63
>
>NOP: 870-289 Pioneer 6-11 Project
>
>SCHEDULE: Refer to DSN 7-day Schedule for actual support times.
>
>DOY BOA BOT EOT EOA DSS USER ACTIVITY PASS
>340 0225 0255 0600 0610 63 PN10 TKG PASS D/L 1267
>
>1. PURPOSE:
>The purpose of this briefing message is to provide the station
>with the approximate times for acquiring the PN10 spacecraft
>coherent 2-Way downlink signal.
>
>2. OBJECTIVE:
>DSS-63 is to acquire the PN10 spacecraft 2-Way coherent downlink
>signal and flow telemetry to project at the beginning of track (BOT).
>
>3. INFORMATION:
>On DOY 339, DSS-14 performed an uplink into the PN10 spacecraft
>in order for DSS-63 to acquire the coherent downlink signal on DOY 340.
>
>The Pioneer 10 signal is only present when the spacecraft is in
>the coherent mode.
>
>4. SUPPORT DOCUMENTATION:
>a) NOP 870-289, Pioneer 6-11 Project.
>b) This Briefing Message.
>
>5. SUPPORT REQUIREMENTS:
>
> TRACKING:
> Configure tracking in accordance with the PN10 NOP 870-289,
> Pioneer 6-11 Project.
>
> TELEMETRY:
> a) Telemetry data rate is 16b/s coded.
> b) Enable both telemetry channels to project.
>
> COMMAND:
> N/A
>
> MONITOR:
> Configure monitor data in accordance with the PN10 NOP 870-289,
> Pioneer 6-11 Project.
>
> RADIO SCIENCE:
> N/A
>
> NOCT:
> a) NOCT is to send the PN10 support products to the supporting station
> prior to the beginning of activity and verify they are on site.
> b) OPS Chief will provide SPC-60 and DSS-63 with DSS-14 drive on (DRV
>ON)
> time and DSS-14 on TSF time from the uplink tuned performed on DOY
>339.
>
> CCT:
> Configure the voice system to allow communications between DSS-63,
> JPL and possibly Pioneer Mission Operations Control Center (PMOCC).
>
>5. MISC:
>a) The PMOCC may be staffed during this activity.
>
>b) The following is DSS-14's uplink tune times and uplink tune parameters
> used on DOY 339:
>
> 339/0515z DRV ON
> Tune Parameters:
> SR 6720Hz (Sky)
> TR 24Hz (Sky)
>
> 339/0730z DRV OFF
>
>6. SEQUENCE OF EVENTS:
>It is not expected that the station will be able to lock onto the
>1-Way downlink signal.
>The prime objective is to lock up to the 2-Way coherent downlink signal
>and flow 16kb/s telemtry.
>
>RTLT 22:24:07 (approximate time, check current predicts for actual RTLT)
>
> 340/0225z Start of precal
>
> 340/0255z BOT - D/L ACQ 2 Way
> (approx. time for 2-Way is 034827z)
>
> 340/0600z EOT (O/L approx. 055407z from 2-Way)
>
>POINTS OF CONTACT:
snip
==========================================================
WHAT THE MIND CAN CONCEIVE, AND BELIEVE, IT WILL ACHIEVE - LRK
==========================================================
--
Larry R. Kellogg
lkellogg@mail.arc.nasa.gov
http://spaceprojects.arc.nasa.gov/Space_Projects/SFDivision/index.html
http://lunar.arc.nasa.gov/resources/news.htm
http://home.covad.net/~lkellogg/index.html
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