AO-7
AO-7 still continues to surprise
Nader, ST2NH reports that David VK5DG and many others have suceeded in decoding the return of the AO-7 70cm RTTY telemetry.
David writes on the Amsat BB
Hello again,
Another pass (2009-02-28 2225 UTC) and the 70cm beacon was on again.
This time I used fldigi and worked out it was sending RTTY at 45 baud.
Using a 85Hz shift gave strings of digits that made the pattern -xxyyy-xxyyy-xxyyy where xx is the channel number
(it incremented from 00 to 59) ..
AO-7 still continues to surprise.
73 de David VK5DG
more on AMSAT-BB
73 de Nader, ST2NH
sourse http://www.southgatearc.org/news/march2009/ao7_continues_to_surprise.htm
AO-7 70cm beacon
- Subject: [amsat-bb] AO-7 70cm beacon
- From: David Giles
- Date: Sun, 01 Mar 2009 06:58:28 +1030
Hello All, I have just heard AO-7's 70cm beacon. I reckon the frequency to be 435.106MHz. The signal bandwidth was 100Hz and rather weak. I couldn't determine any modulation. So, if you find AO-7 in mode A, try the 70cm beacon. 73 de David VK5DG.
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AO-7 still continues to surprise
- Re: AO-7 70cm beacon
- Subject: [amsat-bb] Re: AO-7 70cm beacon
- From: David Giles <vk5dg@xxxxxxxxxxx>
- Date: Sun, 01 Mar 2009 10:29:38 +1030
Hello again, Another pass (2009-02-28 2225 UTC) and the 70cm beacon was on again. This time I used fldigi and worked out it was sending RTTY at 45 baud. Using a 85Hz shift gave strings of digits that made the pattern -xxyyy-xxyyy-xxyyy where xx is the channel number (it incremented from 00 to 59) and yyy is the value. Going through the data table from the December 1974 AMSAT newsletter (Thanks again Phil Karn) gives: Channel Values OK My reckoning from the table 00 366 Y PA temp 70/2 transponder off 01 918 917 Y +X current -14.1mA 02 871 892 Y +Y current 27.9mA 03 637 753 Y -X current 334mA 04 870 744 Y -Y current 354mA 05 010 105 Y +Z axis sensor 84deg 06 911 Y +X current -14.1mA same as 01 07 881 906 Y +Y current -2.6mA 08 00000 00000 N All x8 channels are not working 09 906 779 Y -Y current 279mA 10 000 000 Y -Z axis sensor 90deg 11 769 770 Y Battery volts 14.1v 12 337 338 N Half battery volts 3.53v 13 711 715 Y Regulated volts 24.31v 14 602 602 Y 10v Reg volts 9.38v 15 937 937 Y 9v reg volts 9.37v 16 416 421 Y Ch reg1 volts 6.51v 17 393 395 Y Ch reg2 volts 6.06v 18 10000 10000 N see 08 19 149 149 N 2304 beacon pwr 20 484 484 Y Ch. Disc current 60.3mA 21 913 912 Y +X current -3mA 22 894 902 Y +Y current 6mA 23 N 24 845 728 Y -Y current 389mA 25 010 094 Y +Z sensor 84.6deg 26 889 888 Y +X current 47.2mA 27 878 883 Y +Y current 40mA 28 20000 20000 N see 08 29 867 750 Y -Y current 341mA 30 000 000 Y -Z sensor 90deg 31 000 000 Maybe 10m RF output 0W 32 000 000 Y 2m RF out 0W 33 467 472 Y 70cm beacon out 258mW 34 000 000 N Total solar array current 35 238 238 N Battery temp formula truncated 36 238 247 N Baseplate temp formula truncated 37 258 273 Y +X facet temp 53.2deg 38 30000 30000 N see 08 39 259 258 N 2304 beacon temp 40 501 501 Y Midrange telemetry cal 5.01v 41 915 915 Y +X current -9.8mA 42 911 912 Y +Y current -15.6mA 43 684 -X current 482mA 44 N 45 020 Y +Z sensor 88.9deg 46 294 Y +X current 1350mA 47 916 916 Y +Y current -24.3mA 48 40000 40000 N see 08 49 N 50 000 Y -Z sensor 90deg 51 767 Y Battery volts 14.12v 52 331 N Half battery volts 3.48v 53 009 N AGC level 70/2 transponder 54 000 N Tx osc 70/2 transponder off 55 000 N Rx Osc 70/2 transponder off 56 000 N Mod out 70/2 transponder off 57 58 50000 N see 08 59 855 855 Y Conv. Osc 70/2 9.50v Missing numbers were corrupted. The values were from two frames. The second value is the preferred value used in the calculations. Comments: Judging from parameter 40, the calibration is still ok. Any parameter in the x8 series is not working. The temperatures are out of range. I don't know about the Zaxis sensors. Is -Z in shadow? AO-7 still continues to surprise. 73 de David VK5DG.
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AO-7 70-cm Beacon is on!
Greetings, The AO-7 70-cm beacon was monitored with very strong signals during the 2009 February 28 22:52-23:14 UTC pass from FM18. The beacon was in a two-state mode that sounded a bit like RTTY in idle. The shift was about 50-Hz between the two states. The nominal zero Doppler frequency appeared to be around 435.1056-MHz and was rock-steady through the pass. 73, Jim, N8OQ
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AO-7 70-cm RTTY beacon and telemetry on!
Greetings, I only recorded 1-minute of the RTTY from last evenings pass but was able to decode channel 11 through 16 from it to augment David's (VK5DG) decodes. Here is what I was able to decode using reverse,45,85 parameters. I also used the 1974 AMSAT J. final parameters and equations conversions. Great job to David for finding the 70-cm beacon on and decoding so much! Ch Value Ok? Description Converted Value ------------------------------------------------------- 11 734 Y Battery volts 13.74v 12 326 N Half battery volts 3.41v 13 695 Y Regulated volts 23.63v 14 602 Y 10v Reg volts 9.38v 15 937 Y 9v reg volts 9.37v 16 422 Y Ch reg1 volts 6.53v ------------------------------------------------------- Jim, N8OQ
sourse AMSAT BB
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Re: AO-7 70-cm RTTY beacon and telemetry on!
Hi all, this is a part of what I could decode this morning (08:53 UTC) over europe: -00369-01918-02892-03693-04805-05040-06912-07.06-00000-09836 -10000-11770-12338-13714-14603-15937-16422-17398-10000-19148 -20484-21913-22902-23731-24775-25040-26888-27883-20000-29801 -30000-31000-32000-334.3-34000-35222-36247-37272-30000-39258 -40501-41915-42912-43767-44755-45041-46923-47.17-40000-49788 -50000-51767-92331-53009-54000-55000-56000-57000-50000-59852 -00530-05147-00530-05147-00530-05147-00530-05147-00530-05147 -00530-05147-00530-05147-00530-05147-00530-09147-00530-05147 -00368-01917-02891-03786-04708-05041-06911-0790.-00000-09739 -10000-11738-12299-13694-14603-15935-16400-17386-10000-1114V -30000-31000-32000-33479-34000-35222-362h6-37280-38000-39257 73, Mike DK3WN
sourse AMSAT BB ---------------------------------------------------------------------------------------
Re: AO-7 70-cm RTTY beacon and telemetry on!
Hi All, AO-7 70-cm RTTY telemetry Beacon RX on 2nd March 2009 16:51 - 17:13 UTC Software MMRTTY 45 Baud 85 Shift,HRD Signal was strong from AOS TO LOS HRD deal wll with Doppler shift after TCA!! Here are some of the data:- -10000-11768-12338-13710-QPEAQTOEU-16421-17395-10000-19131 -20484-21912-22898-23864-24549-25073-26887-27880-20000-29630 -30000-31000-32000-33479-34000-35234-36260-37288-30000-39256 -40501-41913-4910-43900-44594-45072-46920-47914-40000-49638 -50000-51765-52331-53019-540P-55-56000-57000-50000-59854 -00555-00047-00555-00047-00555-00047-00555-00047-00555-00;(7 APVMOT-00047-00555-00047-00555-00047-00555-00047-00555-00047 -00365-11869-02810-03884-04640-0506APYITR207898-0010-09528N -10000-11745-12307-13712-14603-15937-16432217381(,17011-19055 -20484-21807-22900-23896-24612-25056-26797-27881-20000-2966MA Snapshot of MMRTTY with AO-7 RTTY Beacon data. http://www.st2nh.com/AO-7RTTYBEACONST2NH.JPG/AO-7RTTYBEACONST2NH-full;init:.JPG 73 de Nader , st2nh www.st2nh.com
sourse AMSAT BB
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Re: AO-7 telemetry
Some AO-07 Telemetry over ZL 3 March 2009. AOS 0946 UT, LOS 1006 UT 29deg. 483345Ø1Ø-46923-478Ø1-4ØØØØ-49921 -5ØØ58-51766-52321-53ØØ9-54ØØØ-55ØØØ-56ØØØ-57ØØØ-5ØØØØ-59861 -ØØ5677Ø2547-ØØ5 (-Ø2547)567-Ø2547& -ØØ567-Ø2547-ØØ5677Ø2547 -ØØ567-Ø?547-ØØ5675 (167-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547 -ØØ362-Ø1918-Ø2828-Ø3694-Ø4874-Ø5Ø1Ø-Ø6912-Ø7848-ØØØØØ-Ø9914 -1ØØ35-1177Ø-12337-13714-146Ø3-15937-16423-174ØØ-1ØØØØ-1915Ø -2Ø484-21913-22862-23679-24877-25Ø1Ø-26889-27847-2ØØØØ-299Ø8 -3ØØØØ-31ØØØ-32ØØØ-33491-34ØØØ-35221-3622Ø-37244-3ØØØØ-39257 -4Ø5Ø1-41916-42886-43672-44882-45Ø1Ø-46924-47892-4ØØØØ-49921 -5ØØØØ-51766-5233Ø-53ØØ9-54ØØØ-55ØØØ-56ØØØ-57ØØØ-5ØØØØ-59847 -ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547 -ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547 -ØØ366-Ø1918-Ø2878-Ø3644-Ø4873-Ø5Ø1Ø-Ø6912-Ø7893-ØØØØØ-Ø99Ø9 -1ØØØØ-11768-12336-13714-146Ø3-15937-16417-17396-1ØØØØ-19148 -2Ø484-21913-22897-23669-24848-25Ø1Ø-26889-2788Ø-2ØØØØ-29871 -3ØØØØ-31ØØØ-32ØØØ-335Ø3-34ØØØ-35222-36232-37261-3ØØØØ-39257 -4Ø5Ø1-41916-42913-437Ø3-44819-45Ø1Ø-46924-47917-4ØØØØ-49851 -5ØØØØ-51765-52329-53ØØ9-54ØØØ-55ØØØ-56ØØØ-57ØØØ-5ØØØØ-59849 -ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547 -ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547 -ØØ366-Ø1918-Ø2892-Ø3743-Ø4758-Ø5Ø1Ø-Ø6912-Ø79Ø6-ØØØØØ-Ø9791 -1ØØØØ-11769-12337-13714-146Ø3-15937-16419-17397-1ØØØØ-19148 -2Ø484-21913-229Ø2-2377Ø-2474Ø-25Ø1Ø-26888-27883-2ØØØØ-29768 -3ØØØØ-31ØØØ-32ØØØ-33483-34ØØØ-35222-36242-37276-3ØØØØ-39257 -4Ø5Ø1-41915-42912-43796-44724-45Ø1Ø-46923-47917-4ØØØØ-49755 -5ØØØØ-51765-52329-53ØØ9-54ØØØ-55ØØØ-56ØØØ-57ØØØ-5ØØØØ-59854 -ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547 -ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547 -ØØ366-Ø1917-Ø2891-Ø384Ø-Ø4659-Ø5Ø1Ø-Ø6911-Ø79Ø5-ØØØØØ-Ø9692 -1ØØØØ-1177Ø-12337-13714-146Ø3-15937-16421-17399-1ØØØØ-19148 -2Ø484-21912-229Ø1-23866-24645-25Ø1Ø-26888-27882-2ØØØØ-29675 -3ØØØØ-31ØØØ-32ØØØ-33482-34ØØØ-35221-36249-37289-3ØØØØ-39255 -4Ø5Ø1-41915-42911-43886-44639-45Ø1Ø-46922-47916-4ØØØØ-49674 -5ØØØØ-51766-5233Ø-53ØØ9-54ØØØ-55ØØØ-56ØØØ-57ØØØ-5ØØØØ-59854 -ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547 -ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547 -ØØ366-Ø1916-Ø289Ø-Ø3881-Ø4619-Ø5Ø1Ø-Ø691Ø-Ø79Ø4-ØØØØØ-Ø9656 -1ØØ71-1177Ø-12338-13715-146Ø3-15937-16422-17399-1ØØØØ-19148 -2Ø484-219Ø6-229Ø1-23896-24624-25Ø1Ø-26876-27882-2ØØØØ-29661 -3ØØØØ-31ØØØ-32ØØØ-33481-34ØØØ-35221-3625Ø-37298-3ØØØØ-39254 -4Ø5Ø1-4188Ø-42911-43912-44653-45Ø1Ø-46881-47916-4ØØØØ-49697 -5ØØØØ-51767-52331-53ØØ9-54ØØØ-55ØØØ-56ØØØ-57ØØØ-5ØØØØ-59858 -ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547 -ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547 -ØØ366-Ø1832-Ø2891-Ø3895-Ø4696-Ø5Ø1Ø-Ø6822-Ø79Ø5-ØØØØØ-Ø9739 -1ØØØØ-1177Ø-12338-13715-146Ø3-15937-16425-174Ø1-1ØØØØ-19148 -2Ø484-218Ø8-229Ø2-239Ø4-24716-25Ø1Ø-26783-27882-2ØØØØ-29752 -3ØØ5Ø-31ØØØ-32ØØØ-33479-34ØØØ-35217-36245-37297-3ØØØØ-39252 -4Ø5Ø1-41795-42912-43914-44734-45Ø1Ø-46798-47916-4ØØØØ-49776 -5Ø181-51766-5233Ø-53ØØ9-54ØØØ-55ØØØ-56ØØØ-57ØØØ-5ØØØØ-59857 -ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547 -ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547 -ØØ367-Ø1762-Ø2891-Ø3896-Ø4764-Ø5Ø1Ø-Ø675Ø-Ø79Ø5-ØØØØØ-Ø981Ø -1Ø263-1177Ø-12337-13714-146Ø3-15937-16419-17397-1ØØØØ-19149 -2Ø484-21729-229Ø2-239Ø6-24796-25Ø1Ø-267Ø4-27883-2ØØØØ-29834 -3Ø259-31ØØØ-32ØØØ-33483-34ØØØ-35221-36244-37283-3ØØØØ-39251 -4Ø5Ø1-417Ø8-42912-43916-44823-45Ø1Ø-4671Ø-47917-4ØØØØ-49866 -5Ø254-51766-5233Ø-53ØØ9-54ØØØ-55ØØØ-56ØØØ-57ØØØ-5ØØØØ-59854 -ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547 -ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547 -ØØ368-Ø1682-Ø2892-Ø3897-Ø4842-Ø5Ø1Ø-Ø6675-Ø79Ø6-ØØØØØ-Ø9883 -1Ø266-1177Ø-12337-13714-146Ø3-15937-16418-17397-1ØØØØ-19149 -2Ø484-2167Ø-229Ø2-239Ø7-24852-25Ø1Ø-26651-27883-2ØØØØ-29885 -3Ø274-31ØØØ-32ØØØ-33483-34ØØØ-35221-36233-3726Ø-3ØØØØ-39251 -4Ø5Ø1-41667-4291Ø-43916-44863-45Ø1Ø-46674-479Ø9-4ØØØØ-499Ø4 -5Ø278-51765-52329-53ØØ9-54ØØØ-55ØØØ-56ØØØ-57ØØØ-5ØØØØ-5985Ø -ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547 -ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547 -ØØ368-Ø1695-Ø2836-Ø3897-Ø4871-Ø5Ø1Ø-Ø6696-Ø7843-ØØØØØ-Ø9911 -1Ø3Ø6-11769-12328-13713-146Ø3-15937-16414-17395-1ØØØØ-19148 -2Ø484-21714-2282Ø-239Ø6-24876-25Ø1Ø-267Ø5-27795-2ØØØØ-299Ø7 -3Ø299-31ØØØ-32ØØØ-335Ø5-34ØØØ-35221-3622Ø-37236-3ØØØØ-39252 -4Ø5Ø1-417Ø7-42795-43915-44881-45Ø1Ø-46695-47792-4ØØØØ-4992Ø -5Ø286-51763-52327-53ØØ9-54ØØØ-55ØØØ-56ØØØ-57ØØØ-5ØØØØ-59843 -ØØ567-Ø2547-Ø)567-Ø2547-ØØ567-1-Ø8-2 YSXKC-Ø247" -Ø567-Ø2547-ØØ567-Ø2547-ØØ567-Ø2547-ØØ567?-824-ØØ567-Ø2547 -ØØ369'3,/1-Ø2733-Ø3Ø95-Ø$Ø1#2#638 Alan ZL2BX
sourse AMSAT BB
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AO-7 mode DTuesday, March 3rd, 2009 by DK3WN
OPU-42622-43877-44879-45052-46920-47628-40000-49920 -50179-51767-52322-53009-54000-55000-56000-57000-50000-59852 -00566-02547-00566-02547-00566-02547-00566-02547-00566-02547 -00566-02547-00566-02547-00566-02547-00566-02547-00566-02547 -00370-01916-02632-03794-04873-05050-06910-07715-00000-09913 -10208-11765-12323-13703-14603-15937-16406-17388-10000-1917 -20484-21908-22726-23790-24876-25049-26885-27643-20000-29908 -30228-31000-32000-33477-34000-5223-3621)-37221-30000-39257 -40501-41911-42722-4356.-44880-45048-46922-47671-40000-49918 -50241-51765-529..-53009-54000-55000-56000-5700050000-592629 &-00566-;5547-00566-02547(00566-025-00566-0254;-00566167 -10566--02548-066-0254..-0066-2547&-00566-04700566-02947 -00369-01916-0274--03816-04870-05048-0"911-0776--00000-09912 -40501-41914-42910-43670-44751-45048-46922-47914-40000-49801 -50000-51679-52241-53009-54000-55000-56000-57#00-50000-59853 -00566-02547-00566-02547-00566-02547-00566-02547-00566-02547 -00566-02547-00566-02547-00566-02547-00566-02547-00566-02547 -00367-01916-02889-03710-04706-05047-0"909-07903-00000-09756 -10000-11767-12336-13686-14603-15936-16411-17389-10000-19144 -20483-20911-22901-23783-24688-25046-26886-27881-20000-29725 -30000-31000-32000-33482-34000-35223-36251-37-90-30000-39258 -40501-41913-42910-43797-44659-45045-46922-47914-40000-49709 -50000-51727-52303-53009-54000-55000-56000-57000-50000-59857 -00566-02547-00566-02547-00566-02547-00566-02547-00566-02547 -00566-02547-00566-02547-00566-02547-00566-02547-00566-02547 -00367-01916-02890-03846-04642-05040-06910-07904-00000-09678 -10000-11769-12336-13710-14603-15937-16415-17390-10000-19148 -20484-21910-22901-23861--4#15-25038-26886-27882-20000-29639 -30000-31000-32000-33471-34000-35223-36256-37296-30000-39255 -40501-41913-42909-43863-44631-45036-46921-47915-40000-49670 -50000-51765-52329-53009-54000-55000-56000-57000-50000-59856 -00566-02547-00566-02547-00566-02547-00566-02547-00566-02547 -00566-02547-00566-02547-0056"-02547-00566-02547-00566-02547 -00368-01915-02889-0375-0-
sourse http://www.dk3wn.info/p/
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AO-7 RTTY BEACON
4th March 2009
Still AO-7 satellite in mode-D pumps a very strong RTTY data.
The downlink frequency is 435.105 + - doppler usb.
Parameters 45 BAUD, 85 SHIFT.
AO-7 Teletype Equations Conversions table found on AMSAT NEWSLETTER 1974on page
9 there is a table for conversion the AO_7 teletype telemetery data .
Here is a link to this old copy
http://www.ka9q.net/AMSAT-Newsletter-1974.pdf
Mike DK3WN is working now on a new software to decode the RTTY.
This wll make the fun more easy to newbies and old timer.
tnx Mike.
Today I was able to decode the following data.
Orbit # 56,962
16:44 - 17:07 UTC
-01909-02588-03894-04870-05038-06904-07535-00000-09913-10000-11770-
12338-13710-14603-15937-16426-17398-10000-19146-20484-21909-22627-
23874-24878-25038-26885-27627-20000-29909-30000-31000-32000-33487-
34000-35229-36230-37220-30000-39253-40501-41912-42680-43840-44882-
45042-46921-47667-40000-4991h( WPPPP-51759-52325-53009-54000-55000-
56000-57000-50000-59851-00612-04057-00612-04057-00612-04057-00612-
04057-00612-04057-00612-04057-00612-04057-00612-04057-00612V-04057-
00367-01916-02723-03767-04874-05027-06908-07692-00000-09909-10000-
11764-12331-13711-14603-15936-16424-17396-10000-19145-20484-21910-
22713-23750-2487"(,"0! I-27747-20000-29907-30000-31000-32000-33483-
34000-35234-36234-37232-30000-39254-40501-41915-42790-43734-44882-
45018-46922-47803-40000-49920-50000-51766--55000-56000-57000-50000-
59850-00612-04057-00612-04057-00612-04057-00612-04057-00612-04057-
00612-04057-00612-04057-00612-04057-00612-04057-00612-040578,/1717-
02797-03632-04873-05018-06908-07848-00000-09909-10000-11769-12337-
13699-14603-15937-16409-17390-10000-19123-20484-21911-22796-23563-
24875-25018-26885-27844-280 .--5988-30000-31064-32000-33496-34000-
35234-36242-37249-30000-39255-40501-41915-42883-43625-44880-45017-
46921-7888-40000-4991
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AO-7 RTTY Telemetry Decoder
Mike DK3WN just released AO-7 RTTY Telemetry Decoder BETA version GREAT FB OM Mike TU. http://www.dk3wn.info/software.shtml Zip version http://www.dk3wn.info/files/ao7_rtty.zip
to test the software use Alan's AO-7 RTTY data file downlad it from this
link ao-7rtty.rar
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