August 2011 - AMSAT-BB - mailman.amsat.org

DM67
by Jim Adams 29 Aug '11

29 Aug '11

I made an impromtu trip to DM67 Sunday and will mail QSL cards to the 23 contacts I had since that is kind of a rare grid (no sase or return card necessary). I'll make a couple of more trips up there before it starts snowing in a few weeks and will announce it here. Jim Adams - K0BAM

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Tracking Software for Android
by hamrad 29 Aug '11

29 Aug '11

There are a number of satellite tracking apps for the Android. It really depends on what you want. I have not found one that does everything I want but here are the ones I am using. HamSatDroid Predisat Satellite AR Space Junk There are others. Tom

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Tracking Program
by H. Vordenbaum 29 Aug '11

29 Aug '11

Has anyone found a tracking program for the Droid system? 73, Harvey K5HV

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ARISSat-1 battery
by g0mrf＠aol.com 29 Aug '11

29 Aug '11

Hi all. The ARISSat team seem to have reached the conclusion that the Silver Zinc battery technology is not really suited for an orbiting satellite with a 55 / 35 minute charge and discharge cycle. I wonder if a couple of small Lithium polymer battery packs would be a suitable replacement for ARISSat-2 ? I note that there are safety issues with Li-ion technology, but there are some small battery packs of 10Whr / 20Whr 30Whr modules which have NASA approval for manned space flight. >From the odd snippet of information on the power required during eclipse (is it 7 Watts for 35 minutes) it looks like 20-25% depth of discharge for the 20Whr battery pack. That's probably OK for a 9 month mission ?? Thanks David G0MRF http://www.clyde-space.com/documents/1902

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SatPC32
by Keith Le Boutillier 29 Aug '11

29 Aug '11

Hi Guys Many thanks for all the help the Doppler function is now working correctly. My issue was that because all my computers are on a domain the my documents folder is on the server and not the local PC when SATPC32 installed it puts all the .SQF files on the server. Once I realised what was happening I found the file and added the satellites and all worked ok. Thanks again for your help 73 Keith GU6EFB

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Re: g5400b problems
by Joe Leikhim 28 Aug '11

28 Aug '11

A while back, while moving some cables, I managed to connect a 25 pin serial cable to my 25 pin parallel printer port. Some interesting things happened, the weirdest was that my computer reported a wild CPU temperature increase. I think on my MB, the chip that handles the parallel port also performs CPU temperature monitoring and I forced the chip VCC higher than normal having RS232 voltage levels presented on its I/O pins. -- Joe Leikhim Leikhim and Associates Communications Consultants Oviedo, Florida www.Leikhim.com JLeikhim(a)Leikhim.com 407-982-0446

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SatPC32 Doppler.SQF file
by Keith Le Boutillier 28 Aug '11

28 Aug '11

Hi Group Have just downloaded the trial version of SATPC32 and have most things working ok. The only thing I cant get to work is the Doppler tracking SatPC2 controls the rig an Icom 910 fine with the default satellites well. It give examples of what to added in the Doppler.SQF file so here are my questions. Should the Doppler.SQF file have been created during installation I had to create my manually? I have put an entry in for ARiSSAT1 but SATPC32 is not picking this information up from the file. I know that this is a newbie error but could somebody point me in the right direction 73 and Thanks Keith GU6EFB

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some exceedingly clever technology
by R Oler 28 Aug '11

28 Aug '11

http://onorbit.com/node/3709 Robert G. Oler WB5MZO Life member AMSAT ARRL NARS

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ArisSat-1 UK pass over UK
by Dominic Hawken 28 Aug '11

28 Aug '11

Very clear pass overhead in the UK (28-08 20.10 UTC): MET: 54 minutes IHU: 33 deg C Control Panel: 38 deg C Batt Volt: 36.03V Batt Current: -8mA Dominic G6NQO

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g5400b problems
by Bob- W7LRD 28 Aug '11

28 Aug '11

Hello Further details. Rotor controller will not talk with computer. Rotors work manually, still not working with second computer, tried park, not go,, satpc32 using a serial port not virtual, satpc32 works the doppler fb on the 910H. It worked yesterday, however I "rearranged" some equipment in the shack, no go after rearrangement. Not sure what the ^%%$#$% I did. Suggestions and some guidance please. 73 Bob W7LRD

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