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Re: Cute-1.7 + APD II Latest CW format and APDobservation



Dear Hiroki,

first middle-european pass was low (13 degr). Here are the decoded packets:

2008-06-10 18:39:32.060 UTC: D0 14 82 00 00 00 00 
2008-06-10 18:39:47.910 UTC: D0 14 82 00 00 00 00 
2008-06-10 18:40:03.780 UTC: D0 14 82 00 00 00 00 
2008-06-10 18:40:19.640 UTC: D0 14 82 00 00 00 00 
2008-06-10 18:40:35.500 UTC: D0 14 82 00 00 00 00 
2008-06-10 18:40:51.380 UTC: D0 14 82 00 00 00 00 
2008-06-10 18:41:07.230 UTC: D0 14 83 00 00 00 00 
2008-06-10 18:41:23.110 UTC: D0 14 83 00 00 00 00 
2008-06-10 18:41:38.970 UTC: D0 14 83 00 00 00 00 
2008-06-10 18:41:54.830 UTC: D0 14 83 00 00 00 00 
2008-06-10 18:42:10.700 UTC: D0 14 83 00 00 00 00 
2008-06-10 18:42:26.560 UTC: D0 14 83 00 00 00 00 
2008-06-10 18:42:42.440 UTC: D0 14 83 00 00 00 00 
2008-06-10 18:42:58.300 UTC: D0 14 84 00 00 00 00 
2008-06-10 18:43:14.170 UTC: D0 14 84 00 00 00 00 
2008-06-10 18:43:30.030 UTC: D0 14 84 00 00 00 00 
2008-06-10 18:43:45.890 UTC: D0 14 85 00 00 00 00 
2008-06-10 18:44:01.770 UTC: D0 14 85 00 00 00 00 
2008-06-10 18:44:17.630 UTC: D0 14 85 00 00 00 00 
2008-06-10 18:44:33.500 UTC: D0 14 85 00 00 00 00 
2008-06-10 18:44:49.360 UTC: D0 14 86 00 00 00 00 
2008-06-10 18:45:05.230 UTC: D0 14 86 00 00 00 00 
2008-06-10 18:45:21.090 UTC: D0 14 86 00 00 00 00 
2008-06-10 18:45:36.970 UTC: D0 14 86 00 00 00 00 
2008-06-10 18:45:52.830 UTC: D0 14 87 00 00 00 00 
2008-06-10 18:46:08.690 UTC: D0 14 87 00 00 00 00 
2008-06-10 18:46:24.560 UTC: D0 14 87 00 00 00 00 
2008-06-10 18:46:40.420 UTC: D0 14 87 00 00 00 00 
2008-06-10 18:46:56.300 UTC: D0 14 87 00 00 00 00 
2008-06-10 18:47:12.160 UTC: D0 14 87 00 00 00 00 
2008-06-10 18:47:28.030 UTC: D0 14 87 00 00 00 00 
2008-06-10 18:47:43.890 UTC: D0 14 87 00 00 00 00 
2008-06-10 18:47:59.770 UTC: D0 14 87 00 00 00 00

73, Mike
DK3WN


-----Ursprüngliche Nachricht-----
Von: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] Im
Auftrag von Hiroki Ashida
Gesendet: Dienstag, 10. Juni 2008 15:53
An: AMSAT Bulletin Board
Betreff: [amsat-bb] Cute-1.7 + APD II Latest CW format and APD observation

Dear Members,

I'm Hiroki Ashida at Tokyo Tech (JQ1YCZ).
As Mr.Hurst, Mr.Rupprecht and Mr.Henk have reported, our CW telemetry 
was changed. We're currently testing an amateur service function, "a 
digital repeater," so the message "hi hi de jq1ytc digi on" have been 
transmitted. I'm looking forwad to open our amateur service channel to 
you all!

And the APD sensor was turned on in the last pass over Japan and a 
long-term APD observation was started. APD status packet can be received 
all over the world until 12:00, Jun 11 (UTC). Your kind cooperation is 
greatly appreciated. If you received it, please let us know! -> 
cute1.7_receive@lss.mes.titech.ac.jp

FM packets are transmitted on 437.475MHz and packet formats are
available in the following web-page.
http://lss.mes.titech.ac.jp/ssp/cute1.7/fm_mode_apd_e.html

4A-51-31-59-54-43-3E-4A-51-31-59-43-5A-3A-D0-30-77-B8-03-16-99
For exapmle, according to an above APD status packet we can obtain
informations as;
4A-51-31-59-54-43-3E-4A-51-31-59-43-5A-3A : Header(JQ1YTC>JQ1YCZ)
D0 : APD Packet ID (Fixed)
30 : Status Code
	APD Status : Operational
	HV Status  : Set Value = Output Value
	Temp Correction : Active
	Data Mode  : Counter Valid
	Detector   : APD A
	APD Gain   : Gain 30
	Threshold  : 219mV
77 : Temperature
	0x77 = 119 -> (119/255)*91.712-48.569 = -5.7 [degC]
B8 : High Voltage
	0xB8 = 184 -> (184/255)*396.5 = 286 [V]
03-16-99 : Counter
	0x1699 = 5785 -> 5785 * 23 = 46280

Best Regards,
Hiroki Ashida
Cute-1.7 + APD II
-- 
Hiroki Ashida <hiroki@lss.mes.titech.ac.jp>
Laboratory for Space Systems
Department of Mechano-Aerospace Engineering
Tokyo Institute of Technology
TEL/FAX : +81-3-5734-2644
Room 554, Ishikawadai 1st Bldg, Tokyo Institute of Technology
2-12-1 O-okayama, Meguro-ku, Tokyo, Japan
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Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb



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