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- Date: Sun, 30 Jan 94 04:30:34 PST
- From: Ham-Space Mailing List and Newsgroup <ham-space@ucsd.edu>
- Errors-To: Ham-Space-Errors@UCSD.Edu
- Reply-To: Ham-Space@UCSD.Edu
- Precedence: Bulk
- Subject: Ham-Space Digest V94 #13
- To: Ham-Space
-
-
- Ham-Space Digest Sun, 30 Jan 94 Volume 94 : Issue 13
-
- Today's Topics:
- ARLS003 New OSCAR on soon
- Daily IPS Report - 28 Jan 94
- InstantTrack Fix
- New Meteor? Where?
- question about a calculation of satellite orbit
- Weekly IPS Report - 28 Jan 94
-
- Send Replies or notes for publication to: <Ham-Space@UCSD.Edu>
- Send subscription requests to: <Ham-Space-REQUEST@UCSD.Edu>
- Problems you can't solve otherwise to brian@ucsd.edu.
-
- Archives of past issues of the Ham-Space Digest are available
- (by FTP only) from UCSD.Edu in directory "mailarchives/ham-space".
-
- We trust that readers are intelligent enough to realize that all text
- herein consists of personal comments and does not represent the official
- policies or positions of any party. Your mileage may vary. So there.
- ----------------------------------------------------------------------
-
- Date: Wed, 26 Jan 94 13:34:57 EDT
- From: unix.sri.com!headwall.Stanford.EDU!agate!howland.reston.ans.net!sol.ctr.columbia.edu!destroyer!nntp.cs.ubc.ca!alberta!ve6mgs!usenet@hplabs.hp.com
- Subject: ARLS003 New OSCAR on soon
- To: ham-space@ucsd.edu
-
- SB SPACE @ ARL $ARLS003
- ARLS003 New OSCAR on soon
-
- ZCZC AS47
- QST de W1AW
- Space Bulletin 003 ARLS003
-
- ------------------------------
-
- Date: 28 Jan 94 02:23:11 GMT
- From: cs.utexas.edu!sdd.hp.com!think.com!cass.ma02.bull.com!syd.bull.oz.au!brahman!tmx!basser.cs.su.oz.au!metro!news.ci.com.au!eram!dave@rutgers.rutgers.edu
- Subject: Daily IPS Report - 28 Jan 94
- To: ham-space@ucsd.edu
-
- IPS RADIO AND SPACE SERVICES AUSTRALIA
- Daily Solar And Geophysical Report
- Issued at 2330 UT 27 January 1994
- Summary for 27 January and Forecast up to 30 January
- IPS Warning 02 was issued on 24 Jan and is still current.
- -----------------------------------------------------------
-
- 1A. SOLAR SUMMARY
- Activity: moderate
-
- Flares Max Fadeout Begin End Freq. Sectors
- M2/SN 0510UT confirmed 0508UT 0540UT lower E. Asia/Aust.
-
- Observed 10.7 cm flux/Equivalent Sunspot Number : 120/072
-
- 1B. SOLAR FORECAST
- 28 January 29 January 30 January
- Activity Low to moderate Low to moderate Low to moderate
- Fadeouts Possible Possible Possible
-
- Forecast 10.7 cm flux/Equivalent Sunspot Number : 120/072
-
- 1C. SOLAR COMMENT
- None.
- -----------------------------------------------------------
-
- 2A. MAGNETIC SUMMARY
- Geomagnetic field at Learmonth : unsettled with active levels from
- 15-18UT
-
- Estimated Indices : A K Observed A Index 26 January
- Learmonth 13 3233 3332
- Fredericksburg 15 17
- Planetary 22 17
-
-
- 2B. MAGNETIC FORECAST
- DATE Ap CONDITIONS
- 28 Jan 18 Mostly unsettled with an isolated active period.
- 29 Jan 12 Quiet to unsettled.
- 30 Jan 08 Quiet to unsettled.
-
- 2C. MAGNETIC COMMENT
- None.
-
- 3A. GLOBAL HF PROPAGATION SUMMARY
- LATITUDE BAND
- DATE LOW MIDDLE HIGH
- 27 Jan fair-normal fair-normal fair-normal
- PCA Event : None.
- 3B. GLOBAL HF PROPAGATION FORECAST
- LATITUDE BAND
- DATE LOW MIDDLE HIGH
- 28 Jan fair-normal fair-normal fair-normal
- 29 Jan normal fair-normal fair-normal
- 30 Jan normal fair-normal normal
- 3C. GLOBAL HF PROPAGATION COMMENT
- Chance of fadeout on daylight circuits.
-
- -----------------------------------------------------------
-
- 4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
- MUFs at Sydney were mostly 15-30% above monthly predicted values, and
- 30-50% above from 08-10UT and 13-14UT. Sporadic E may have affected F
- layer communications during daylight hours. A fadeout in response to
- the M2 flare occurred from 0508-0540UT.
-
- T index: 81
-
- 4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
- DATE T-index MUFs
- 28 Jan 45 Near predicted to 20% enhanced.
- 29 Jan 45 Near predicted to 20% enhanced.
- 30 Jan 45 Near predicted to 20% enhanced.
-
- Predicted Monthly T Index for January is 30.
-
- 4C. AUSTRALIAN REGION COMMENT
- Sporadic E may affect F layer communications, particularly during
- daylight hours. Chance of fadeout on daylight circuits.
- --
- Dave Horsfall (VK2KFU) VK2KFU @ VK2OP.NSW.AUS.OC PGP 2.3
- dave@esi.COM.AU ...munnari!esi.COM.AU!dave available
-
- ------------------------------
-
- Date: 29 Jan 1994 23:12:58 GMT
- From: library.ucla.edu!agate!howland.reston.ans.net!torn!news.ccs.queensu.ca!news.rmc.ca!somers@network.ucsd.edu
- Subject: InstantTrack Fix
- To: ham-space@ucsd.edu
-
- Some time ago, a fix for InstantTrack appeared on BBSs to fix the
- problem of the new checksums in 2-line elsets. I got the fix from a BBS and
- applied it and it worked fine. However, I recently reloaded my InstantTrack
- and realized I cannot find the "fix" program. Anyone know of an Internet
- or BBS location where I could get it. Thanks.
-
- ------------------------------
-
- Date: Sat, 29 Jan 94 21:47:00 +0200
- From: usc!elroy.jpl.nasa.gov!swrinde!cs.utexas.edu!howland.reston.ans.net!pipex!sunic!trane.uninett.no!news.eunet.no!nuug!news.eunet.fi!gate.compart.fi!compart!leo.wikholm@network.ucsd.edu
- Subject: New Meteor? Where?
- To: ham-space@ucsd.edu
-
- According to AW&ST the new Meteor 3 satellite will be launched in the
- end of January. Does anyone know when was this launch happened and what
- is the frequency of the satellite?
-
- Leo Wikholm
- e-mail: leo.wikholm@compart.fi
-
- ------------------------------
-
- Date: 24 Jan 1994 15:19:49 -0800
- From: usc!howland.reston.ans.net!cs.utexas.edu!swrinde!sgiblab!sgigate.sgi.com!olivea!apple.com!amd!amdahl!hip-hop.sbay.org!not-for-mail@network.ucsd.edu
- Subject: question about a calculation of satellite orbit
- To: ham-space@ucsd.edu
-
- The question is at end. Here is the description of the problem I am
- having.
-
- I was trying to calculate the longitude for oscar 21. I got the following
- formulas from a friend of mine.
-
- Lon[W] = {[(JxR-D)x24+6.6285792]*15}-RAx
-
- Where J is the julian day (in days) with out year, that is, something
- like 24.8777day. R is the earth rotation rate 1.002737851 rev/day. D
- is the integral value of JxR. (JxR-D)x24+6.6285792 is the Greenwich
- Sidereal Time (GST) in hours, thus [(JxR-D)x24+6.6285792]*15 is GST in
- degrees. RAx is the RA at current time.
-
- RAx = RA0 + [Jx-J0]x(d(RA)/dt)
-
- RA0 and J0 are the RA and Julian day at epoch. d(RA)/dt is the rate of
- change of RA.
-
- Here are my calculations:
-
- At PST time 12:00, or UTC time 20:00 today (UTC date Jan 24),
- the Julian day (UTC) is
-
- 25.83333
-
- therefore I calculated (JxR-D)*24+6.6285792, GST in hours, to be
-
- 28.32605
-
- subtracting since it is greater than 24, I subtracted 24 from it,
- and got
-
- 4.32605
-
- multiply by 15 I got
-
- 64.89070
-
- which is the GST in degrees.
-
- Then I calculated the RAx. I used the data (got from the net) with
- epoch 94019.17209926. RA at that point is 252.9794.
-
- In order to calculate d(RA)/dt, I had to find the data with epoch
- 94012.62069919. RA at that point is 257.8282.
-
- Thus the d(RA)/dt is approximately
-
- (252.9794-257.8282)/(19.17209926-12.62069919) = -0.74012
-
- Therefore the RAx at 25.83333 would be
-
- 252.9794 + (25.83333-19.17209926)x(-0.74012) = 248.049312108.
-
- Now the lon[w] should be the difference between GST in degrees and
- RAx.
-
- GST in degrees - RAx = 64.89070 - 248.049312108 = -183.15861
- degree W.
-
- So here is the problem, my tracking software, PCTRACK, predicted a
- lon of 145.1 east.
-
- I don't see a correlation between the two numbers. Did I use the
- wrong formula? Are the formulas the same for all sat? Is Oscar 21
- somewhat different?
-
- All information, answers are welcome.
-
- Thanks
-
- Benjie
-
- ------------------------------
-
- Date: 28 Jan 94 02:24:05 GMT
- From: cs.utexas.edu!sdd.hp.com!think.com!cass.ma02.bull.com!syd.bull.oz.au!brahman!tmx!basser.cs.su.oz.au!metro!news.ci.com.au!eram!dave@rutgers.rutgers.edu
- Subject: Weekly IPS Report - 28 Jan 94
- To: ham-space@ucsd.edu
-
- 21 JANUARY - 27 JANUARY 1994
-
-
- Issue No 04
- Date of issue: 28 January, 1994
-
- INDICES:
- Date 21 22 23 24 25 26 27
- 10cm 111 113 118 129 132 128 120
- A 07 09 07 03 05 17 (15)
- T 38 53 75 73 82 56 81
-
-
- SUMMARY OF ACTIVITY
-
- January 21
- Solar activity was very low.
- The geomagnetic field at Learmonth (WA) was quiet to unsettled.
- Ionospheric F2 critical frequencies at Sydney were near predicted
- monthly values.
-
- January 22
- Solar activity was low.
- The geomagnetic field at Learmonth (WA) was quiet to unsettled.
- Ionospheric F2 critical frequencies at Sydney were slightly above
- predicted monthly values.
-
- January 23
- Solar activity was low.
- The geomagnetic field at Learmonth (WA) was quiet to unsettled.
- Ionospheric F2 critical frequencies at Sydney were about 15% above
- predicted monthly values.
-
- January 24
- Solar activity was low.
- The geomagnetic field at Learmonth (WA) was quiet.
- Ionospheric F2 critical frequencies at Sydney were about 15% above
- predicted monthly values.
-
- .SK
- January 25
- Solar activity was moderate, with an M1/1N flare at 1836UT.
- The geomagnetic field at Learmonth (WA) was quiet.
- Ionospheric F2 critical frequencies at Sydney were 15-30% enhanced
- 00-14 UT, then near predicted monthly values.
-
- January 26
- Solar activity was moderate, with an M1/0F flare at 0136UT.
- The geomagnetic field at Learmonth (WA) was mostly unsettled with
- active periods from 06-09UT and 12-15UT.
- Ionospheric F2 critical frequencies at Sydney were near predicted
- with 15-40% enhancements from 09-14UT and at 18UT.
-
- January 27
- Solar activity was moderate, with an M2/0N flare at 0510UT.
- The geomagnetic field at Learmonth (WA) was unsettled with active
- levels from 15-18UT.
- Ionospheric F2 critical frequencies at Sydney were mostly 15-30%
- above monthly predicted values, 30-50% above from 08-10UT and
- 13-14UT. Sporadic E may have affected F layer communications during
- daylight hours. A fadeout in response to the M2 flare occurred from
- 0508-0540UT.
-
-
- FORECAST FOR THE NEXT WEEK (28 - 3 FEBRUARY)
-
- SOLAR: Low to moderate
-
- GEOMAGNETIC: Quiet to unsettled
-
- IONOSPHERIC: Near predicted to 20% above monthly predicted values.
- Possibility of fadeouts on daylight circuits.
- --
- Dave Horsfall (VK2KFU) VK2KFU @ VK2OP.NSW.AUS.OC PGP 2.3
- dave@esi.COM.AU ...munnari!esi.COM.AU!dave available
-
- ------------------------------
-
- Date: (null)
- From: (null)
- SB SPACE ARL ARLS003
- ARLS003 New OSCAR on soon
-
- New Oscar on soon
-
- Amateur satellite Korean Oscar 25 (KO-25) is expected to be
- available for use beginning about February 1. The satellite,
- launched last fall and originally designated KITSAT-B, has been
- under test since then.
-
- KO-25 is a 9600 bit/s packet store-and-forward satellite similar to
- KO-23, with uplinks on 2 meters and downlinks on 70 cm.
-
- KO-25's builder, the Korean Advanced Institute of Science and
- Technology (KAIST), thanks potential users of the satellite for
- their cooperation up to now in not attempting to use the KO-25 BBS.
-
- The Institute said that testing is expected to continue after
- February 1, and there may be interruptions of service, but they are
- not expected to cause any ''serious problems.''
-
- ''We hope you enjoy our new star in space,'' said Hyungshin Kim of
- KAIST.
-
- More information on KO-25 was in October 1993 QST, page 98.
- NNNN
- /EX
-
- ------------------------------
-
- End of Ham-Space Digest V94 #13
- ******************************
-