Date: Sun, 2 Oct 94 04:30:28 PDT From: Ham-Space Mailing List and Newsgroup Errors-To: Ham-Space-Errors@UCSD.Edu Reply-To: Ham-Space@UCSD.Edu Precedence: List Subject: Ham-Space Digest V94 #276 To: Ham-Space Ham-Space Digest Sun, 2 Oct 94 Volume 94 : Issue 276 Today's Topics: Is there a microsat FAQ? (2 msgs) STS-68 Orbital State Vector Rev #17 test gateway Will an ICOM R7100 Work for APT/AVHRR Reception Send Replies or notes for publication to: Send subscription requests to: 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: 1 Oct 1994 17:20:20 GMT From: rparsons@tcet.unt.edu (Ron Parsons) Subject: Is there a microsat FAQ? >Sounds like I'll need a new tnc, a new modem, and some expensive >software. Perhaps I didn't make myself clear. Your TNC (with mods) should be ok. You will need a modem appropriate to the sat. The software is not expensive. Most is available only for DOS (i'd suggest PB/PG/SatSked) or Windows (I'd suggest WiSP) all available very cheaply from AMSAT. If you will be going in for more than a single mode, then the DSP route makes sense. The available DSP modems are VERY stable. Recommend AEA DSP-2232 (good support), DSP-12 (support seems absent but the unit works well), and soon to be available from TAPR -- DSP-93 kit. The 9600 bps sats are very busy, but there's always room for one more. Ron W5RKN ------------------------------ Date: 1 Oct 1994 17:08:19 GMT From: "F. Kevin Feeney" Subject: Is there a microsat FAQ? In article <36hndj$r6a@hermes.unt.edu> Ron Parsons, rparsons@tcet.unt.edu writes: In article <36hndj$r6a@hermes.unt.edu> Ron Parsons, rparsons@tcet.unt.edu writes: >You asked a lot of questions, but I'll try. As far as stroe-and-forward >sats, in general there are the 1200 bps ones and 9600 bps ones. Other >than having to make minor mods to your rig, the 9600 ones are easiest to >use and much faster also. UO-22, KO-23 and KO-25 are the current ones. >You will need a 9600 bps modem, TAPR has a kit, but you need a modem >disconnect header, which the 232 doesn't have I believe. I think TAPR >also as a header add-on kit also. TAPR/AMSAT also now has a DSP modem kit >DSP-93. Contact AMSAT for software (you should be a member if you use the >sats. > >Ask more specific question and I'll try to answer. > >Ron W5RKN Sounds like I'll need a new tnc, a new modem, and some expensive software. I've been an amsat member when I was more active, but I think I'm lapsed now. I was hoping to be able to do it as an incremental step up on the current station. The dsp modems still sound like the best way to deal with the changing states of digital communications, but it doesn't seem that they are very stable yet either. Still, it would be a good way to keep in touch with the boat. How busy are the satellites? Kevin ------------------------------ Date: Sat, 1 Oct 1994 14:51:04 GMT From: astroman@netcom.com (SignalMan) Subject: STS-68 Orbital State Vector Rev #17 Vector format = 117 Satellite Name: STS-68 Catalog Number: 23285 94062A Epoch Date/Time: 94274.50272710648 10/01/1994 12:03:55.622 UTC EFG E: -12272641.26 ft F: 1473396.33 ft G: -17765702.36 ft Edot: -9020.6119 ft/s Fdot: -22502.3520 ft/s Gdot: 4362.0116 ft/s ndot/2 (drag): 0.00136673066 rev/day^2 nddt/6: 7.68565E-08 rev/day^3 Bstar: 6.78387E-05 1/Earth Radii Elset #: 3 Rev @ Epoch: 17.78269246691 MSDOS/PC software is available for conversion of OSV to 2 Line Keplerian Elements via ftp to: oak.oakland.edu:/pub/msdos/hamradio/v2l9331.zip and the SIMTEL archives. State Vectors courtesy Ken Ernandes N2WWD SM ------------------------------ Date: 1 Oct 94 23:14:51 GMT From: root@network.UCSD.EDU (Rooty-Toot-Toot) Subject: test gateway test2 ------------------------------ Date: 1 Oct 1994 15:52:39 GMT From: Ken Terry Subject: Will an ICOM R7100 Work for APT/AVHRR Reception I have used an ICOM R9000 with success downloading APT/AVHRR signals, however I have a friend that wants to get into this a 'little' cheaper. Has anyone had any success getting APT/AVHRR downloads with success from an ICOM R7100. If so, did any adjustments have to be made to the bandwidth. I am not familiar with this unit, and do not know if there is an adjustment for this on the front control panel. I have info coming from ICOM, however I would rather hear from the real users of this equiptment. Thanks in advance! Ken ------------------------------ End of Ham-Space Digest V94 #276 ******************************