dna@dsd.UUCP (03/03/84)
Posted: Fri Mar 2, 1984 1:34 AM PST Msg: TGIE-1730-3067
From: HPRICE
To: AMSAT
Subj: UOSAT-2 LATE NIGHT REPORT
Surrey was as surprized as we were that the beacon was off. The could not
get an answer from the s/c on their first pass this morning. Current
belief is that the watchdog timer came up in a random count and shut
the beacon off. They will try to reset this during their 10:13utc pass.
Posted: Fri Mar 2, 1984 3:43 AM PST Msg: DGIE-1730-3191
From: MSWEETING
To: AMSAT
Subj: Oscar-11
UoSAT-2 was commanded to send telemetry from shortly before
LOS at Surrey on Thursday at 22:32:20. We have reception
reports from Japan at 22:53, however the 145.825 MHz beacon
was not heard later in the USA.
Attempts on the first two passes this morning at Surrey to
re-boot the computer and turn on the beacon - or, indeed to
turn it on manually - have failed.
We would be very interested in data and reception reports for
the 145MHz beacon from 22:50 onwards yesterday in order to
attempt to find a cause for this potential problem.
Roger Peel G8NEF
Martin Sweeting G3YJO
UoS
Posted: Fri Mar 2, 1984 4:22 AM PST Msg: SGIE-1730-3246
From: MNAKAYAMA
To: msweeting
CC: amsat
Subj: Another frame
Martin,
I called up JH7CKF again and received another frame which he
got around 2300 UTC shortly before LOS.
He has sent me hardcopy of all the frames he got this morning.
So, if you want, I'd QSP all of them via this media, perhaps
tomorrow evening.
Most of my coleagues told me that they heard signals up to LOS,
2301 UTC or so. Thus, in terms of output of the beacon, there
wasn't drastic change while UO-11 was within our range.
Miki
---- * * * ----
UOSAT-2 0000410034438
00492F01480D022 8003400704047705035306020407044708034F090292
10515011322312000313088214000515002616001617515718522C19525A
20226421188222662223000124000625000726096B27518928474D294816
30520431037632284F33598434000 35369A364414173986384539394608
40849141000542668E43000744175345003246000247453148462C494382
50572551091C52682B53337154823855000056000357447558453F594585
60826A615BC562800C63024364040665010266A00 67000168000E690 0F
Note: This frame was garbled a bit. Apparently garbled letters
are expressed as " " (blank).
Posted: Fri Mar 2, 1984 5:54 AM PST Msg: GGIE-1730-3674
From: PKARN
To: amsat
Subj: Nothing heard - morning pass
Nothing heard on the East Coast morning (13:30 UTC) pass from UO-11.
Needless to say, my concern level is extremely high.
Phil
Posted: Fri Mar 2, 1984 7:11 AM PST Msg: OGIE-1730-4422
From: HPRICE
To: AMSAT
Subj: FRIDAY MORING STATUS
Friday morning report.
Oscar-11 was last head at 23:01 in JA. It was not heard during a US pass 1/2
hour later. Surrey has been unable to command the s/c in its first three
passes today. Analysis in Surrey of the tlm shows the s/c was cooling.
Condition of the s/c is unknown at this time. Any TLM blocks received
should be forwarded to Surrey. Keep listening.
Harold.
Posted: Fri Mar 2, 1984 7:15 AM PST Msg: CGIE-1730-4470
From: PKARN
To: amsat
Subj: Sleuthing UO-11
I've been doing some calculations to try to pinpoint the time at which
UO-11 went off the air.
Miki reports signals during the entire Japan pass ending at 23:00; I
heard nothing only an hour later. In the meantime, the satellite went through
a descending node over the Pacific and an ascending node over the
Atlantic. Locations between Japan and east coast USA (me) included
New Zealand, eastern Australia, South America and Ascension Island.
In particular, ZL1AOX should have had a ~9 min pass starting at 23:11.
Try to canvass anyone you know who might have listened for the
spacecraft from these locations and report any results, positive or
negative, on this medium. I'm particularly interested in knowing if
anything happened at the start of the half-hour eclipse at 23:40:21.
With fingers crossed,
Phil
Posted: Fri Mar 2, 1984 8:08 AM PST Msg: IGIE-1730-5096
From: LKAYSER
To: pkarn
CC: amsat
Subj: telem old uo11
I have just printed 200K or so of telem
from UoS, and I am trying to get
them to break it up into 30K byte pieces so I can work on my cpm system
here in the office to relay on prnet.
what do you want from the paper telem
I have here?
relay on tm for today
Posted: Fri Mar 2, 1984 11:09 AM PST Msg: BGIE-1730-6689
From: LKAYSER
To: pkarn
CC: amsat
Subj: AO11 DATA is available
Phil, and anyone else interested, this is the data from UoS passes 1,2,3 from
yesterday. Note U2X2.DAT is a slightly cleaned up version of U2X2ORIG.DAT that
has a lot of garbage in it. I will start to send after close of
business on the west coast tonight. Have you any comments?
U2X1 .DAT 1k | U2X2 .DAT 14k | U2X2ORIG.DAT 16k | U2X3 .DAT 16k
U2X4 .DAT 16k | U2X5 .DAT 16k | U2X6 .DAT 17k | U2X7 .DAT 18k
U2X8 .DAT 18k
Drive B, user 0 contains 132K in 9 files with 109K free
We will be using this data to prove in our systems and to see if anything can
be learned about the battery performance during this period.
Regards, Larry
Posted: Fri Mar 2, 1984 6:07 PM PST Msg: KGIE-1731-1406
From: TCLARK
To: amsat
Subj: U-O-11 Keplerian set #3
Here is a 3rd set of elements phoned to me late tonite:
Object: 1984-021B = NASA # 14781
NASA El.Set: # 3
Epoch: 84062.68180598
Incl: 98.2533
RAAN: 125.1350
Eccr: 0.0012482
Arg.Perg: 257.2198
Mean Anom: 106.2567 at epoch
Mean Motion: 14.61810824
Drag: -0.00000024
73, Tom
Posted: Fri Mar 2, 1984 7:24 PM PST Msg: CGIE-1731-1578
From: MNAKAYAMA
To: msweeting,pkarn
CC: amsat
Subj: 30 more frames
Martin and Phil,
Just received a letter from JH7CKF which contained 30 frames
of data he received at 2250 - 2300 UTC on 2nd. March.
I'll send a copy of them to both of you for analysis.
Miki
Posted: Fri Mar 2, 1984 8:55 PM PST Msg: OGIE-1731-1770
From: PKARN
To: amsat
Subj: Mystery narrowing
Thanks to GRATCLIFF, we now have telemetry from 23:10-23:15 UTC, only
about 45 minutes before the non-LOS at KA9Q. I have decoded his frames
and can't find a clue - everything looks reasonably nominal.
Now the next area we need to put out a call for help to is the South
Atlantic region - suitable locations include eastern South America
(e.g, PY, LU, FY7) and Ascension Island. Just a definite positive or
negative reception report would be extremely helpful. Particularly
welcome would be a report from the Falkland Islands - the spacecraft
entered eclipse halfway through a 4 minute pass there.
Phil