May 2008 - AMSAT-BB - mailman.amsat.org

Field Day Rules ARRL -vs.- AMSAT
by Gary "Joe" Mayfield 25 May '08

25 May '08

The ARRL Field Day rules regarding satellites are difficult for me to understand. I asked for a clarification of the one contact FM bird rule and did not hear what I expected. What they mean is "one contact per FM voice satellite" For example: if AO-51 is running VU and LS you get one contact, not one on each transponder. (The opposite of AMSAT I believe) I believe there are more differences; On AO-7 where working a station in mode A and then working it again in mode B would be two contacts for AMSAT, but a dupe for ARRL. In fact working a station on AO-7 (either transponder) and then on VO-52 is a dupe in the ARRL (but not AMSAT) rules as "Satellite" is a single band in the eyes of the ARRL. I'm trying to stay out of trouble this year, so if anyone has any additional clarifications please let me know, or if you know this to be wrong let me know. Thanks and 73, Joe kk0sd

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Yubileiny data mode?
by andy thomas 25 May '08

25 May '08

Synch pulses on FM are at about 2450 Hz, and then it is like RTTY around this frequency. MixW produces garbage though. 73 de andy G0SFJ __________________________________________________________ Sent from Yahoo! Mail. A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html

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YUBILEINY: Some CW decode, some FM packet
by andy thomas 25 May '08

25 May '08

Yubileiny switched on when about 10 degrees elevation from northern Russia, with intermittent FM bursts of a few hundred ms. Then a few second bleeeps reminiscent of WEFAX synch bleeps followed by continuous FM packet; could not decode the packet in WEFAX decoder however. Will try again with mixW. CW sent after the FM, seemingly on command: eauset 4 ix 544 avu 54 usun 1 isun 0 itxa 6 (fm key) *3 rs 30 us 164 ibs 76 (fm key) rs 30 (fm key) rs 30 us 162 ibs 12 (long fm data - gone). These are mostly the same as in RS22 (I've taken the decode from contributors to Mineo's web site). US seems to have replaced UBS in RS22 : On Board voltage /10 IBS On Board current /100 USUN Charge Voltage from solar battery/10 ISUN Charge current from solar battery /100 Amps ITXA DC Current of the Tx (it was 145 MHz tx in RS22) /100 A RS22 telemetry did not refer to: eauset ix avu however I recorded these from FM keying not cw so they could be incorrect. Therefore the values we definitely have are: On Board voltage /10 = 16.4 or 16.2 volts (my value yesterday was 16.3) On Board current /100 = .76 or .12 A (the letter seems low) Charge Voltage from solar battery/10 = 0.1 Volts (seems low) Charge current from solar battery /100 Amps = 0 DC Current of the Tx (it was the 145 MHz tx in RS22) /100 A = .006 This suggests she's not charging. 73 de andy, G0SFJ __________________________________________________________ Sent from Yahoo! Mail. A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html

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Yubileiny(RS30) CW 435.315/215 !!
by Mineo Wakita 25 May '08

25 May '08

I found CW 435.315 and 435.215 MHz accidentally by chance. I confirmed today that Yubileiny were transmitting both of 435.315 and 435.215. I decoded 'RS30' letter both of them, using object C, 17:39:00-18:00:00UTC, 25May2008. de JE9PEL, Mineo Wakita

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Fwd: Decay Forecast 03 FCAL SPHERE 2
by Bob Bruninga 25 May '08

25 May '08

FCAL amateur satellite may be coming in tonight or tomorrow. Here is what Harro Simmer predicts: See if you can be the last to get telemetry. 1200 baud AFSK on 437.385 +/- 10 KHz doppler. WEB page: http://www.ew.usna.edu/~bruninga/fcal.html ---- Original message ---- >Date: 24 May 2008 18:20 GMT > 2006-06055J (#29667) FCAL SPHERE 2 > > My SP - Program delivers with the ELSETs > 08144.821... -08145.491... > (Ap 009, SFX 068) the decay on > 25 May, 12:28 UT +/- 22 minutes (18.06°S, > 229.53°E) ascending over the South Atlantic. > This is in nice agreement with SPACETRACKs last > prediction issued 24 May 11:53 UT: > > 25 May, 12:23 UT +/- 16 hours (32.2°S, 325.9°E) > also northbound over the South Atlantic. > BTW: On 25 May between 09:00 and 15:00 UTC there is > no pass over North America. > > Harro Zimmer, Berlin (Germany)

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Seeds FM packet decode problem
by andy thomas 25 May '08

25 May '08

Hi Strong FM packet signals from SEEDS II this morning, about 1045 u, but even with Mix2 in custom afsk 1100/2300, only intermittent decode, and like this (not necessarily in that order): JQ1YGU>JQ1YGV>UI,?,F0: ù..l..B¸.............a...l.¯.E.„.............”.û.R.ã...€.À.D.*./...z.¶.`...~ JQ1YGU>JQ1YGV>UI,?,F0: ù..¨..B½.............n...€.¬.B.Ž.............~.ý.T.À...a.º.(.-./...x.¯.f...y JQ1YGU>JQ1YGV>UI,?,F0: ù..ä..BÂ.............j...Š.¥.C.‰.............–.ü.T.§.ü.].»...,.....x.¬.d.$.z JQ1YGU>JQ1YGV>UI,?,F0: ù..Ô..BÖ.............n...ˆ..C.Ž.............†.ù.V.Ñ...U.Ä.....-...u.®.f.(.| anyone know the parameter settings - is it a paclen or something? and how to get this into KISS? I am using MIXw v2 and the souncard only. I have a WAV file recording and can replay endlessly... many thanks 73 de andy G0SFJ __________________________________________________________ Sent from Yahoo! Mail. A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html

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SEEDS II tlm decode from last night
by andy thomas 25 May '08

25 May '08

FROM THE CALCULATION PROGRAMME: ******************************************* SEEDS Downlink Code for Ham Operators ******************************************* Data Type: CW Long House Keeping Data (This is the calculation time, the rx time was 2120u 24 may) UTC Time: 2008/05/25 11:07:53 Local Time: 2008/05/25 11:07:54 CW Code: JQ1YGU SEEDS G4 015960DF D85 FRE 006 E51 000 000 260 000 61C 611 B06 660 11 0000 0001 0001 0001 40E2 7F 40 34 Note – I’ve used the last 12 data items from the preceeding frame., to make up the full frame). ---------------Voltage Data----------------- Li-ion Battery Voltage(3.7[V]): 4.225 [V] Bus Voltage(5.0[V]): 4.705 [V] -----------Solar Cell Current Data------------ Solar Cell Current1: 5.057 [mA] Solar Cell Current2: 418.745 [mA] Solar Cell Current3: 4.362 [mA] Solar Cell Current4: 4.362 [mA] Solar Cell Current5: 74.552 [mA] Solar Cell Current6: 4.362 [mA] ---------------Thermal Data---------------- Li-ion Battery1: 54.652 [deg. C] Li-ion Battery2: 54.564 [deg. C] FM & CW Transmitter: -7.654 [deg. C] FM Reciever: 50.330 [deg. C] ----------------System Data---------------- Satellite Time: 2263471.0 [s] CW Transmitter Interval: 3 [s] Relay Switch1: ON Relay Switch2: OFF Relay Switch3: OFF MPU Reset Times (EPS): 0 [times] MPU Reset Times (FMR): 1 [times] MPU Reset Times (C&DH): 1 [times] MPU Reset Times (CW): 1 [times] Downlink Times: 16610 [times] Uplink Times: 127 [times] Release of Forced Charging Mode: OFF Command Number: 64 --------------Shunt Circite Data-------------- Shunt Mode: Auto Shunt Mode __________________________________________________________ Sent from Yahoo! Mail. A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html

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Yubileiny(RS30) CW 435.215MHz !!??
by Mineo Wakita 25 May '08

25 May '08

I accidentally found some CW 435.215MHz. 435.215MHz, object C, 09:23:00-09:44:00UTC, 25May2008 Maybe I think Yubileiny(RS30) or an another satellite. http://www.ne.jp/asahi/hamradio/je9pel/80525yu2.wav --------------------------------------------- Name: Mineo Wakita / JE9PEL, JAMSAT member Mail: ei7m-wkt(a)asahi-net.or.jp URL : http://www.ne.jp/asahi/hamradio/je9pel/ QTH : Yokohama Japan, GL:pm95tj Date: May 25, 2008 ---------------------------------------------

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YUBILEINYA : APT/WEFAX?
by andy thomas 24 May '08

24 May '08

The cyclical tones I heard last night in usb mode resolved this morning on FM into: what sounded to me remarkably like APT or weather fax transmissions. No CW. Incidentally last night after "RS 30" she sent "US 163" then switched into this mode. She was southbound and west of Plesetsk, so already commanded on and sending a short series of these transmissions. If APT then my FM IF bandwidth would be insufficient I think. Prefer 435.313 MHz. 0410 approx utc: back to bed now 73 de andy G0SFJ. __________________________________________________________ Sent from Yahoo! Mail. A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html

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New Sat.
by John Hackett 24 May '08

24 May '08

Apparently, several people were surprised at the launch of the new Russian satellite. Interested parties might like to check out "Observations From Russia" (you can't miss it) on the <http://www.observations,biz> website of LA2QAA & GM1SXX. NB. GM1SXX does all the donkeywork - LA2QAA just sits back and takes all the credit. Next time, click on Observations, before opening 'gob'. 73 John. <la2qaa(a)amsat.org>

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