AMSAT-BB November 2013

203 participants
309 discussions

Nova For Windows
by Kelley Shaddrick 30 Nov '13

30 Nov '13

I've owned Nova for a number of years but recently had to reload it when I upgraded my PC. For some reason, the maps don't seem to look the same as they used to. Is there a separate download for better maps? I've been to the website, but can't seem to find anything. Thanks, Kelley -- Kelley - WØRK

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SpaceX Might Try Launching Monday
by B J 30 Nov '13

30 Nov '13

http://www.parabolicarc.com/2013/11/30/spacex-aiming-falcon-9-launch-attemp… 73s Bernhard VA6BMJ @ DO33FL

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Funcube Handbooks
by richard limebear 30 Nov '13

30 Nov '13

Folks It seems some people are unable to find the handbook (in English, French and Italian). Look here: <http://funcube.org.uk/working-documents/funcube-handbook/> I am awaiting the translations into Dutch and Spanish, maybe the translators were waiting for me to get back from holiday (got back yesterday) 73 Richard G3RWL

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tle-new.txt
by David W0DHB 30 Nov '13

30 Nov '13

Tle-new.txt is now designating AO-73 as AO-73, not 2013-0066B , ditto Triton1 and others

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help with satpc32iss
by Nick Pugh K5QXJ 30 Nov '13

30 Nov '13

I am running xp pro and I cannot get satpc32 to load any suggestions nick Thanks nick Office 337 593 8700 Cell 337 258 2527 Helping UL become a world Class Engineering and Educational School

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AO-73 frequency fluctuations
by Ronald G. Parsons 30 Nov '13

30 Nov '13

Using the keps from this morning (epoch 13333.066), I measured the frequency of the telemetry signal of AO-73 during a 43 deg pass at about 1648 UTC (Nov 29). This is a pass with the satellite in the sun The frequencies are the frequency “at the satellite” calculated by SatPC32 to place the center of the telemetry in the middle of my 3.0 kHz USB passband. Thus the frequency of the center “at the satellite” are 1.50 kHz higher than these. Elevation xx where the frequency is 145935.xx MHz 0 .94 5 .87 10 .81 15 .73 20 .70 25 .62 30 .60 35 .56 40 .57 43 .54 40 .48 35 .42 30 .37 25 .39 20 .36 15 .32 10 .30 5 .27 0 .20 Thus a change of about 600 Hz over the entire pass with the frequency DECREASING. ---------------------------------------------------------------------------------------------- Using the keps from this evening (epoch 13333.744), I measured the frequency of the telemetry signal of AO-73 during a 21 deg pass at about 0340 UTC (Nov 30). This is a pass with the satellite in shadow, running on batteries. The frequencies are the frequency “at the satellite” calculated by SatPC32 to place the center of the telemetry in the middle of my 3.0 kHz USB passband. Thus the frequency of the center “at the satellite” are 1.50 kHz higher than these. Elevation xx where the frequency is 145934.xx MHz 0 145933.98 5 .00 10 .12 15 .16 **** 20 .21 **** 20 .32 **** 15 .48 **** 10 .50 5 .65 2.5 .74 0 .76 Thus a change of about 800 Hz over the entire pass with the frequency INCREASING. However, where noted with ****, there were were sudden shifts in frequency up and down of 1.0 to 1.5 kHz. During this pass, the linear transponder was on, and I assume the sudden shifts of frequency noted by **** could have been caused by changes in total power used by the transponder. --------------------------------------------------------------------------------------------- The first pass above was during battery charging and the frequency decreased. The second pass was during battery discharging and the frequency was increasing. The sudden shifts of frequency are very obvious when you are in QSO on the transponder. It would be interesting for someone to correlate the frequency shifts with some parameter such as voltage or temperature. Ron W5RKN EM10ci

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SATPC32 & AO73 question
by Ted 29 Nov '13

29 Nov '13

Hi all, In spite of my usual ineptness with this program, I have managed to have it talking to my FT-847, downloaded the keps for AO73 and appear to be tracking it!! However, I can't seem to get the radio to hold the up/dn frequencies in the proper VFO's. I start out with the uplink showing in VFOA, but after a min or so the frequencies swap and I have to use the a><b button to get them back. Am I missing a setting? Any help appreciated And Happy Thanksgiving to all 73, Ted K7TRK

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help with the CAPE II sat
by Nick Pugh K5QXJ 29 Nov '13

29 Nov '13

Hi AMSATERS The CAPE team is having trouble copying the bacon's from out sat below is a table of our receiver noise with different azimuths notice our system temperature terminated in a 50 resistor is 367 deg k and when connected to an antenna ranges from 4000 to 12000 deg k. The noise appears to be white noise Question 1. Does this seem reasonable? 2. If the noise is not reasonable how to you go about trouble shooting it? 3. We are concerned about the gain of our antenna to help us trouble shoot this question what is the bacon at 145.935 mhz received level on fundcube-1 what is your antenna gain and what range to the sat did you observe the receive level? date frequency(mkz) bandwith (hz) termination (type) Az (deg) Ele (deg) input (dbm) Tempreture (k) 13 11 29 0500 145.825 7000 50 ohm res **** *** -134.5 367 145.825 7000 ant #2 KLM 0 0 -122.8 5433 145.825 7000 ant #2 KLM 90 0 -119.1 12736 145.825 7000 ant #2 KLM 180 0 -123.7 4416 145.825 7000 ant #2 KLM 270 0 -125.9 2661 Thanks nick Office 337 593 8700 Cell 337 258 2527 Helping UL become a world Class Engineering and Educational School

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AO73 pass @ 0632 UTC tonight
by Patrick STODDARD (WD9EWK/VA7EWK) 29 Nov '13

29 Nov '13

Hi! I will be on the next AO-73 pass at 0632 UTC tonight. Hope to hear anyone else out west that might still be up and around the radio at that hour. The last pass around 0455 UTC was the best pass to the east that I've worked on this satellite so far. I made only 2 QSOs, but could hear my 5W signals through the transponder from 2 minutes after AOS almost until LOS, up around .965 to .967. That was fun! 73! Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/

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Today's SpaceX Launch Scrubbed
by B J 29 Nov '13

29 Nov '13

The first attempt scrubbed due to low engine thrust after ignition. The second attempt ended at less than 1 minute to go. There was no announcement on the live Internet feed about what the cause was or when the next attempt will be made. 73s Bernhard VA6BMJ @ DO33FL

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AMSAT-BB November 2013