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[jamsat-bb:4952] Re: LO-19 CW telemetry
衛星LO-19のCWテレメトリ運用再開の情報が、JH4DHX/3 大谷氏により
報告されました。[jamsat-bb:4949, Jan 15, 2000] 本日(Jan 15)、
10:42JST〜10:57JST(01:42〜01:57UTC) のパスで、当局 JE9PEL/1 に
おいてもCWテレメトリの送信を再確認しました。 (Tnx.JH4DHX/3)
大谷氏の報告のとおり、ゆっくりしたCWビーコンを1分間隔で送信し
ていて、1フレームは3桁の略数字(下記資料(3)参照)の8個のデータで
構成されていました。 437.125MHz 1200bps CW_mode に設定して
dxterm.exe を用いて受信しましたが、ドップラー偏移により周波数
は +/-10kHzほど変化し 、デコードもシビアなので、受信には繊細な
チューニングが要求されます。
次に受信データを抜粋します。各1行目が実際の受信データ、2行目
は下記資料(3)によりそれを数値に置き換えたものです。
E LUSAT HI HI 40 AUN ABB AV6 ADT AUN AED AET AE6
5 LUSAT HI HI 40 129 177 136 180 129 158 150 156
E LUSAT HI HI 40 AUN ABE AV6 ABN AUN AEB A44 AE6
5 LUSAT HI HI 40 129 175 136 179 129 157 144 156
E LUSAT HI HI 40 AUN AB4 AVE ABD AUN AEB A44 AE6
5 LUSAT HI HI 40 129 174 135 178 129 157 144 156
では次に下記資料をもとに、この1行目のデータを解析してみます。
同様に解析していくと、+10バッテリ電圧(CH2)・出力電力(CH4)・
+Zパネル電圧(CH7)の値が、減少傾向にあることがわかります。
CH 1: +5 voltage 636/129=4.9 Volts
CH 2: +10 battery voltage 0.064*177=11.3 Volts
CH 3: CW transmitter temp 0.354*(134.7-136)=-0.5 Deg.C
CH 4: Output power TX ((10.9+180)^2)/40.1=909 mW
CH 5: Box temperature #4 0.356*(136-129)=2.5 Deg.C
CH 6: +10 v current 0.7*158=111 mA
CH 7: +Z voltage panel 0.15*150=22.5 Volts
CH 8: +8.5 voltage 0.056*156=8.8 Volts
----- [資料(1)] -----
> Date: 24 Dec 1999 12:09:36 EDT
> Subject: [jamsat-amsat-bb:27582] LUSAT CHANGED
> From: gustavoc@bbs.pinos.com
> To: amsat-bb@amsat.org
>
> Lusat have changed to CW beacon at 437.125 MHz, so PSK downlink it 's at
> 437.150 MHz. The CW beacon is sending eight telemetry channels and one
> status channel.
> The format is:
>
> LUSAT HI HI VL N1 N2 N3 N4 N5 N6 N7 N8.
>
> V is the EPROM's program version from 1 to 8.
> L is the ram micro test. L=O, (okey) L=E, (error).
>
> Remember that numeric value are in compact codification.
> Reports are wellcome.
> Merry X-Mas and HAPPY NEW YEAR from AMSAT-LU
> Gustavo Carpignano, LW2DTZ
----- [資料(2)] -----
> Date: Sat, 25 Dec 1999 18:08:18 +0100
> Subject: [jamsat-amsat-bb:27597] LUSAT Cw-Beacon
> From: "Miguel A. Menendez" <ea1bcu@amsat.org>
> To: amsat-bb@amsat.org
>
> <LUSAT CW/12ppm Telemetry 437.125 Mcs>
>
> The Lusat sends one status channel (NL) and 8 data channels.
>
> LUSAT HI HI NL N1 N2 N3 N4 N5 N6 N7 N8
>
> NL = Status Channel:
> N = It is the number of Eprom program version. The program is loaded 7
> times to prevent a crash, and it goes loading successive versions when error
> is detected in the active version. (N = 1,2,3,4,5,6 or 7)
>
> L = it is the result of the RAM/6508 test, if L=O the RAM is OK, if
> the value of L=E is error in the RAM.
>
> Ch1# = +5 Reg Volts 636/N1 V
> Ch2# = +10v Battery 0.064*N2 V
> Ch3# = CW Tx Temp 0.354(134.7-N3) C
> Ch4# = CW Tx Power/Out (10.9+N4)^2/40.1 mW
> Ch5# = Temp Box4 0.356(136-N5) C
> Ch6# = +10V Current 0.7*N6 mA
> Ch7# = +Z Volts 0.15*N7 V
> Ch8# = +8.5 Volts 0.056*N8 V
>
> 73 de Miguel, EA1BCU
>
> Miguel A. Menendez // Apdo. 79 Aviles // 33400 ASTURIAS Spain.
> E-mail: ea1bcu@amsat.org http://www.ctv.es/USERS/ea1bcu
----- [資料(3)] -----
> Date: Sun, 26 Dec 1999 21:18:45 -0500 (EST)
> Subject: [jamsat-amsat-bb:27597] LUSAT Cw-Beacon
> From: John Magliacane <magliaco@email.njin.net>
> To: ans@amsat.org
>
> SB NEWS @ AMSAT $SPC1227
> * SpaceNews 27-Dec-99 *
> BID: $SPC1227
> =========
> SpaceNews
> =========
> MONDAY DECEMBER 27, 1999
>
> * LUSAT-OSCAR-19 NEWS *
> =======================
> In anticipation of the 10th anniversary of the Microsat satellite launch
> on January 22, 2000, AMSAT-Argentina activated LUSAT-OSCAR-19's CW
> telemetry beacon transmitter on December 21, 1999. PSK is now being
> transmitted by the satellite on 437.150 MHz, and CW is available on
> 437.125 MHz. The digipeater is currently active, and the PSK beacon
> is currently transmitting the following text message:
>
> ---------------------------------------------
> Dec 21.
> CW beacon active for some hours
> Pse send your report and get a nice QSL card.
> 73 de Nestor, LU7XAC
> ---------------------------------------------
>
> LO-19, a 7 inch square microsat satellite, orbits 780 km above the
> earth's surface. Solar cells and NiCad batteries aboard LO-19 are
> maintaining better than 60% efficiency after over 51,600 consecutive
> charge/discharge cycles in space. The satellite is currently
> delivering over 1 watt of output power on both transmitters.
>
> Controllers invite everyone to copy either the CW or PSK telemetry
> transmissions from LO-19, and submit them to AMSAT-Argentina in exchange
> for a colorful QSL card. Reports may be sent via packet radio to:
> LU7AA@LU7AA.CF.ARG.SOAM, or via e-mail at lu7xac@amsat.org. AMSAT-LU's
> Web site is available at: http://www.amsat-lu.org/
>
> The morse sent by LO-19 on 437.125 MHz is abbreviated slightly to save
> transmission time and conserve on-board electrical power. Morse is sent
> at 12 WPM, and is coded as follows:
>
> 0 - T 5 . E
> 1 .- A 6 -.... 6
> 2 ..- U 7 -... B
> 3 ...- V 8 -.. D
> 4 ....- 4 9 -. N
>
> The beacon has one status channel and eight 3 digit data channels. Data
> for each channel follows, and the formulas that follow provide the correct
> value.
>
> The message format is: LUSAT HI HI VL N1 N2 N3 N4 N5 N6 N7 N8
> VL: Version of redundant software. N1 to N8 telemetry data of each channel.
>
> CH 1: N1 +5 voltage 636/N1 Volts
> CH 2: N2 +10 battery voltage 0.064*n2 Volts
> CH 3: N3 CW transmitter temp 0.354*(134.7-N3) Deg. C
> CH 4: N4 Output power TX ((10.9+N)^2)/40.1 mW
> CH 5: N5 Box temperature #4 0.356*(136-N5) Deg. C
> CH 6: N6 +10 v current 0.7*N6 mA
> CH 7: N7 +Z voltage panel 0.15*N7 Volts
> CH 8: N8 +8.5 voltage 0.056*N8 Volts
>
> LUSAT's BBS code is expected to be reloaded in mid-January 2000.
>
> Thanks go to LUSAT's first ground control station, Nestor Pavan, LU7XAC,
> for building up a team and placing LO-19 in full operation. Special thanks
> also go out to AMSAT-NA, AMSAT-UK, AMSAT-Brasil, and Weber College with
> whom AMSAT-Argentina has shared the Microsat's Quest during the last ten
> years.
>
> [Info via LU7XAC and LU7AA]
>
> -=-=-=-=-=-=-=-=-=-=-=-=- John A. Magliacane, KD2BD -=-=-=-=-=-=-=-=-=-=-=-=-
> Internet : kd2bd@amsat.org | Voice : +1.732.224.2948
> Satellite : AO-16, KO-25 | Morse : -.- -.. ..--- -... -..
> Packet : KD2BD @ N2TDU.NJ.USA.NA | WWW : http://www.njin.net/~magliaco/>
> Video : 426.250 MHz/439.250 MHz | FAX : +1.732.224.2060
> -=-=-=-=-=-=-=-=-=-=-=- Linux Doesn't Cost. It Pays. -=-=-=-=-=-=-=-=-=-=-=-
----------------------------------------------
Name : JE9PEL/1 脇田
Mail : je9pel@jamsat.or.jp
URL : http://www.ne.jp/asahi/hamradio/je9pel/
QTH : Yokohama, Japan
Date : Jan 15, 2000
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