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紧急公告:请暂停145.990MHz频率的ISS digipeater/APRS试验发射! [复制链接]

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离线BD4OS
 
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只看楼主 倒序阅读 0楼 发表于: 2006-02-03
今天(2006/2/3)iss第十二组成员将在执行eva(太空行走)时释放一个特殊的仿真宇航人卫星suitsat,,这台卫星外观是利用俄罗斯宇航局的一套老宇航服制作的,体内安装有大量的传感器用于探测宇宙辐射,由于使用电池供电信号比iss上的电台功率要小不少,因此可能需要更好一点的天线来接收下行信号,最重要的一点他使用了iss的digipeater上行频率作为下行,因此紧急通知各地iss爱好者在相当的一段时间请不要使用iss的数据上行频率尝试发射,你的一次不经意ptt触按可能让一个地区的爱好者无法接收到来自suitsat的微弱信号,届时iss可能会通过跨段操作来中转suitsat信号,此时你的发射更将会影响一个国家甚至一个大洲的信号接收,鉴于此,请各位ham务必注意以上通知并严格遵守,维护中国ham在国际上的声誉!

btw:suitsat对于ham讲是单工工作的,任何试图上行建立qso和连接均是徒劳的,只会增加各地接收信号的干扰而已!何时恢复iss digitalpeater频率使用另行通知(大概时间为一周或者更长一点)。
离线bd4rs
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5111
只看该作者 1楼 发表于: 2006-02-03
这回明白suitsat是什么了,坚决支持公告.
现在会员多了,一上来都使用2m或70cm频率,有时使用非常的随意.能否提供一些需要注意的频点,避免做为平时聊天使用.也可在今后的新会员培训中作为一个重点培训内容.
离线BD4OS
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只看该作者 2楼 发表于: 2006-02-03
谢谢4rs兄的响应,上面的图片是当时eva的时候拍摄的,下面的照片是改装成suitsat之后的样子!

最近几天我回提供一个频率使用规划表,以避免无意识的错误使用。。。
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5111
只看该作者 3楼 发表于: 2006-02-03
THIS IS SUITSAT-1 RS0RS!!
this is suitsat-1 rs0rs!!
frank h. bauer; ka3hdo
amateur radio on the international space station (ariss) international chairman
amsat vice president for human spaceflight programs
nasa goddard space flight center

introduction
"this is suitsat-1 rs0rs!!"

these words will echo from space in the near future, inspiring students, exciting ham radio operators and touching the world.


if all goes as planned, a unique extra-vehicular activity (eva)—or spacewalk will be conducted on the international space station (iss) in early february 2006. during this spacewalk, the iss crew will push a russian spacesuit overboard---with no humans in it, of course! but this spacesuit holds the hopes, dreams and creativity of students around the world. and for a week or two, this suit-robot-satellite will take on a life of its own---parroting students voices from around the world, voicing down suit health telemetry and sending a special commemorative picture to all who want to receive it.
suitsat-1 (also called radioskaf or radio sputnik in russian) mission activities will be conducted on the amateur radio (ham radio) frequencies, a bit above the fm broadcast band. the voice signals can be picked up with ham radio receivers and fm vhf (very high frequency) scanners—like police-band scanners.

students, scouts, teachers, ham radio operators, and the general public are encouraged to track the space suit, hear the conversations from space, copy the suit telemetry and capture the picture. a special certificate will be distributed to those who receive the voice signals and those who capture the picture. we also will have a special award for those students who receive the “special words” that are embedded in the messages from our suitsat student “crew members.” these special words are in different languages---english, french, german, spanish, russian, and japanese. so you are encouraged to record the suitsat downlink audio and get help from fellow students who know these languages.

also included in this spacesuit is a computer compact disk (cd) with images of over 300 items collected from schools and educational organizations around the world. these include creative works of art from students as well as student signatures, school or scout logos, and class or group pictures. students, schools and educational organizations that participated in the development of this disk earlier this year will all be part of the suitsat spacewalk---as their creative works, signatures and pictures all float in space!

the following will provide more details on the suitsat-1 mission and provide you information on how you and your school can participate.

the suit and on-board equipment

figure 2 - suitsat antenna and interface control box
figure 3 - crew interface control box
figure 4 - suitsat interface control, transmitter and digitalker/micro controller
figure 5 - kenwood th-k2 transceiver
through the miracle of ham radio, the ingenuity of the international space agencies, the help of students and schools, and the tireless work of a few volunteer “rocket scientists” suitsat-1 was born.

suitsat is sponsored by ariss (amateur radio on the international space station), an international working group consisting of volunteers from national amateur radio societies (the american radio relay league in the u.s.) and the internationally-based radio amateur satellite corporation (amsat).



the idea for suitsat was first conceived by the ariss-russia team, led by sergey samburov, rv3dr, and was extensively discussed at the joint amsat symposium/ariss international partner meeting in october 2004. the project, is being led by project manager a. p. alexandrov and deputy project manager a. poleshuk from rsc energia, located in korolev (moscow area) russia. the project was developed primarily by a joint us/russian team. on the us side, the hardware project development was led by amsat member lou mcfadin, w5did. embedded in the russian orlon space suit (figure 1) are two boxes housing the ham radio transmitter and the micro-controller and electronics that stores and plays back the digital voice and video recordings. also inside the spacesuit will be some batteries to power the system and the “school spacewalk” cd. on the outside of the spacesuit is the suitsat antenna and the crew interface control box---the crew interface device that turns the suitsat power on. see figures 2 to 3. prior to the spacewalk, the iss crew connects cables to the two internal boxes (the kenwood transmitter box and the micro-controller electronics box), figure 4, and stores these two boxes in a fabric container that is housed inside the space suit (see figure 6). next, they mount the antenna and the interface control box to the exterior of the suit helmet as shown in figure 2. next, the batteries, interface control box and antennas are all connected to the two internal boxes with special connecting cables. the suitsat is then ready for deployment. once the crew is outside on their eva, they turn all three switches on the control box to the on position and deploy the spacesuit from iss. their objective is to put suitsat in a retrograde orbit so it “de-orbits” relative to iss. this orbit will appear from the ground to be ahead of the iss, while it is actually slowing down and is below iss.

suitsat-1 transmission specifics
all transmissions will be on 145.990 mhz fm. this is in the vhf (2 meter) portion of the amateur radio band. it can easily be picked up with a simple vhf hand-talkie ham radio, although ground-based antennas with higher gain are preferred to hear suitsat for the entire 10 minute pass. suitsat audio can also be received using a police band scanner. an external antenna is highly encouraged. suitsat will be transmitting 0.5 watts into the same type of antenna currently used on the iss ham radio station.

additional downlink frequency and information for ham radio operators
since suitsat will be operating on the iss world wide packet uplink frequency of 145.99 mhz, it is requested that all packet operations on that frequency be suspended for the duration of the suitsat transmissions. keeping transmissions off the downlink frequency will help to avoid local interference to the 1/2 watt downlink signal from suitsat.

the iss crossband repeater is under consideration for being temporarily reconfigured to listen for the suitsat transmissions and then retransmit them on 437.80 mhz. it is hoped that persons with minimal equipment might have a better chance of hearing the suitsat retransmissions from the crossband repeater since iss has a power output of 10 watts. please help us to avoid interference problems by not using the crossband repeater while suitsat is active because anything else the repeater hears on 145.99 mhz will interfere with the suitsat retransmissions.
离线bd4rs
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5111
只看该作者 4楼 发表于: 2006-02-03
tracking suitsat-1
if you plan to hear suitsat, you need to know when it will be visible in your area. to do this, you need to obtain some orbit prediction software or see the iss orbital path from the internet. information on this can be found at the following:

http://www.amsat.org
http://www.amsat.org/amsat-new/tools/
http://science.nasa.gov/realtime/jtrack/
please understand that when you use an orbital prediction program you need an accurate synchronization of time (to a few seconds).

downlink specifics

figure 6 - suitsat hardware (transmitter and digitalker/microcontroller box inside fabric container)


to fully understand the suitsat-1 downlinks, some background information is in order.

one of the reasons our russian colleagues were interested in developing suitsat was as an on-orbit commemoration of the 175th anniversary of the bauman moscow state technical university. this university is where many of the engineers in the russian space agency graduated. as a result, the russian-generated messages include congratulatory comments to the bauman moscow state technical university.

in addition to the messages from russia, there are voice messages from students in japan, europe (spanish and german), canada (french) and the usa (english). the usa message is from a student enrolled in the eastern middle school, silver spring, maryland. eastern middle school is a nasa explorer school. in addition, the suitsat-1 id was voiced by a korean-born young lady enrolled in paint branch high school, burtonsville, maryland, usa. as you can see, suitsat-1 truly has an international flavor!

special word
several of the student messages include a special word. one student project for suitsat will be to copy all the special words (in different languages) and submit them to the ariss team for special educational award recognition.

suit telemetry
the suit telemetry is sensed by the suitsat microcontroller and converted to a voice message. three telemetry data messages will be transmitted. these will be periodically repeated. specifically, the suit telemetry will be transmitted in the following order:


mission time
suit temperature
battery voltage, where 28 volts is the nominal voltage
the suitsat team is quite interested all three pieces of telemetry as it will be a predictor for suitsat mission life.

suitsat downlink picture
the downlink picture will be transmitted using a set of audio tones, similar to a computer modem, using a ham radio picture standard called slow-scan television (sstv). sstv, developed many years ago, provides cell phone quality pictures. a single picture was installed on in the suitsat microprocessor memory and will be downlinked. suitsat uses an sstv data transmission standard called robot 36. this standard sends the entire image in 36 seconds.

for more information on sstv, you may check out:

http://www.marexmg.org/spacecam/spacecam.html
http://www.ultimatecharger.com/sstv.html
suitsat-1 downlink sequence
now that you understand the specifics, what can you expect when suitsat is over your area? to save suitsat power and to maximize the time that suitsat is operational, 30 second pauses have been included between each of the voice messages. so the sequence will be as follows:

suitsat voice id (5 seconds)
international voice message, suit voice
telemetry, or sstv image (15-45 seconds)
30 second pause
...and repeat

the international message order will be as follows:

voice telemetry
russian message
europe student messages (spanish and german)
bauman institute message (russian)
canada student message (french)
mr. alexandrov message (english)
japan student message (japanese)
usa student message (english)
sstv picture
copying suitsat data
if you are planning on copying the suitsat-1 downlink, you are highly encouraged to record it so you can replay it later. tape recorders or digital voice recorders with at least 10-15 minutes of continuous recording are recommended. you can then use these to submit suit telemetry information, the special words and the sstv image to the ariss team and the space agencies.

"school spacewalk" cd
as part of the suitsat project, a cd with hundreds of school pictures, artwork, poems, and student signatures is included. two identical cds were flown, one will go in the suit as part of the suitsat-1 spacewalk. the other is available for the crew to review. there are approximately 300 items on the cd including artwork, school and educational organization logos, student signatures and student and school pictures. a composite of several of the items installed on the cd are shown in figure xx. as you can see, these are from all over the world (japan/asia, europe, russia, canada, us, south america and africa). several nasa explorer schools participated as well as numerous esa and russian space agency-sponsored schools.

suitsat postings of telemetry, special messages and the sstv image
this is still a work in progress. please return to the web site often to get details on this as the suitsat mission gets closer.
special certificates
those that hear suitsat will be eligible to receive a special certificate in commemoration of your achievement. also, if you receive the sstv image, copy the telemetry and/or copy the special words, special certificate endorsements will be provided. to receive a suitsat special certificate, please use the standard qsl card address in your area of the world. these are located at: http://www.rac.ca/ariss/oindex.htm#qsl's

indicate the time and date you heard suitsat and any other information that will acknowledge your reception of the information (telemetry, sstv picture, etc) that will confirm that you should receive the proper endorsements on your certificate. please include a self addressed stamped envelope. and provide a big envelope and protective cardboard if you do not want your certificate folded or damaged during shipment.

current status
on may 10, 2005 nasa gave the ok to fly. four short weeks later, the usa built suitsat hardware was sent to russia for final testing, certification and integration with the russian-built hardware.

on thursday september 8 at 13:08 utc, progress 19p lifted off from the baikonur cosmodrome in kazakhstan. included in the 2.5 tons of fuel, food and supplies was the suitsat amateur radio hardware. the successful docking of progress to iss on september 10 culminated the successful design, development, certification and delivery of this exciting educational project. the iss expedition 11 crew has unpacked the suitsat equipment, making it available for installation, use and deployment by the expedition 12 crew. suitsat deployment is currently scheduled for february 2, 2006.




conclusions
the suitsat project was an extremely challenging endeavor for the ariss hardware team, primarily due to the very short development time. throughout the development effort, we have involved students. as suitsat nears deployment, we are looking forward to the continued involvement and participation of students worldwide.

for all the amateur radio operators in the world, this is your chance to get your local school involved. bring a radio, orbit tracking program, sstv equipment, an audio recorder and your enthusiasm into the school. suitsat promises to capture the imagination of the students and, if successful, will allow the students to learn more about space, amateur radio and satellite orbits. please volunteer and wish our robotic astronaut in the russian orlon suit a good and successful journey in space!!

additional information
ariss web site: http://www.rac.ca/ariss

amsat web site: http://www.amsat.org

http://en.wikipedia.org/wiki/orlan_space_suits

http://www.issfanclub.com

http://space.cweb.nl/article.html?id=407 photo of how cosmonauts get into the orlan suit

acknowledgements
on behalf of the ariss international team, the author would like to acknowledge and congratulate the suitsat hardware development team for their "can do" spirit and ability to deliver the suitsat hardware on such a very challenging schedule.

specifically, we would like to thank the following: alexander alexandrov, alexander poleshuk, sergey samburov, rv3dr, lou mcfadin, w5did, kenneth ransom, n5vho, frank bauer, ka3hdo, mark steiner, k3ms, steve bible, n7hpr, joe julicher, n9wxu, rawin rojvanit, farrell winder, w8zcf, jeffery winder, kb8vco, hiroto watarikawa, jj1lyu, stan wood, wa4nfy, herb sullivan, k6qxb, dave taylor, w8aas, deanna lutz, k7did, claire fredlund, carol jackson, kb3lki, kenwood and microchip technology inc.

the author would also like to acknowledge the tremendous support, teamwork and volunteer spirit of the ariss-international team as well as the technical, financial and administrative support of the ariss member organizations--the amsat organizations and iaru organizations (arrl in the usa). also special recognition is in order to the space agencies: nasa, energia, esa, jaxa & csa. together we are pioneering the new frontiers of amateur radio and educational outreach.

for more information on the ariss program, you are welcome to visit the ariss web page at: http://www.rac.ca/ariss
离线bd4rs
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5111
只看该作者 5楼 发表于: 2006-02-03
写的很详细啊,可惜我看不太懂.只能借金山词霸慢慢啃了.
计算机,电台都还可以.唯独e文,就象下螺丝没有扳手,焊器件没有烙铁,那个难受劲.
离线bd4rs
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5111
只看该作者 6楼 发表于: 2006-02-04
suitsat deployed 4 hours 24 minutes ago!
-------------------------------------------
suitsat is on-the-air
suitsat is on the air on 145.990 mhz! this most unusual amateur radio satellite was successfully deployed on february 3 when russian cosmonaut tokarev activated suitsat's helmet-mounted control panel and jettisoned the orlan space suit as planned.

running only on internal batteries within the spacesuit, suitsat will have a limited, but interesting lifetime beaming down special messages and an sstv image as it floats in space. having no external thrust to adjust its orbit after it is hand-deployed during the eva, suitsat will be in a free-floating, but decaying orbit around earth. it is expected to remain in orbit up to 6 weeks after being deployed but its radio message may only be heard for the first week until the internal suit batteries expire.

the image on the left shows suitsat in it's flight configuration. you can see the electronics control panel on the top of the helmet along with the suitsat antenna. a new handle has been added around the midsection of the suit (black stripes). the handle is an important addition that will allow the astro/cosmonaut launching the suit to move it safely. [photo courtesy of energia]

suitsat's transmissions includes special international voice messages, spacesuit telemetry, and a pre-programmed sstv picture on its 145.990 mhz fm downlink. if you have already received the packet station or heard the iss crew on 2-meter voice, then you already have most of what you need. amateur radio signals from the iss can be received with a 2 meter vertical antenna so an elaborate tracking system is not necessary. keep in mind that suitsat will transmit a weaker signal than the main ham transmitter aboard the iss so try for the best antenna feasible. while a 2 meter vertical antenna may suffice during suitsat's initial operation, higher gain, directional antennas will become necessary to hear suitsat as the battery gets weaker, reducing the transmitter power. the sstv signal can be decoded with personal computer sstv software after you connect your computer to the speaker output of your radio.

see the complete article including additional suitsat photographs at:
http://www.amsat.org/amsat-new/articles/suitsat/

also see the article "this is suitsat-1 rs0rs" by frank bauer,ka3hdo at:
http://www.amsat.org/amsat-new/articles/bauersuitsat/index.php updated

updated: 03 feb, 06
离线bd4rs
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5111
只看该作者 7楼 发表于: 2006-02-04
dead suit
今早11点多iss正好从我在位置的头顶飞过,在145.990和145.800上没有收到任何信号.
suitsat真的歇了? 电池给冻死了?太空太cool了!
-------------------------------------------------------------------
received by time heard (utc) signal mission time temperature voltage comments
hs4pov 20060204045817     no signal
usa - dead suit 20060204043921     http://www.nasa.gov/multimedia/nasatv/index.html
k2mah 20060204041706     i just read nasa says the suitsat died after 2 orbits, bummer.
ve3 20060204040825     nasa tv commentator said suitsat ceased operation after 2 orbits
it's dead jim 20060204040643     nasa reports suitsat is dead
lu4fdv 20060204040526     no signal heard 03,35 to 04,05, sorry.....
kc2ntg 20060204040455     143.625 or 145.990
ntvinfo 20060204040315     nasa tv announcer reporting suitsat is now non-functional
it's a negative 20060204040212     nasa-tv is reporting the batteries have frozen or died. suitsat is dead
meco3hp 20060204035707     nasa tv says they think the batteries are too cold
puas 20060204035658     noise level
vk4sjw 20060204035608     nothing heard  
zl3ga 20060204035249     nothing heard...
zl1dt 20060204035028     not a sqeak! nada!
wb3ivx 20060204034905     nothing in pa.
k0neb 20060204034747     nothing heard, hope for better in the morning.
vk4yoi 20060204034712     nothing heard
zl2ft 20060204034644     nothing heard at all
zl1aox 20060204034451 1     very weak signals detected withh ssb mode selected. unable to decode anything useful.
vk2it 20060204034416     nothing heard
zl2cwa 20060204034353     no signal
fede 20060204034209      
zl1dgk 20060204034208 1     no signal, elv max 51
k177r 20060204034116 5     strong sounds of......nothing
vk4ari 20060204034038     nothing that can be confirmed
vk2zty 20060204034035     nothing heard
ta2x 20060204034026     bad signal
rw6aum 20060204033923     all night listening and no even 1 second voice :(
vk4jwt 20060204033842     two radios two antenna's one vert one beam no signal at all
vk4jam 20060204033749     nothing heard...outlook not good
n3mmh 20060204033527 1     very weak sig, barely heard.
vk4vhf 20060204033432      
n3mmh 20060204033414 1     weak sig
vk2hef 20060204033233     nothing heard fm, s7 band noise on ssb
vk4it 20060204033220     nothing heard
bx1ad 20060204033019     nothing was heard. (max elv. 43 deg.)
离线BA5AG
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只看该作者 8楼 发表于: 2006-02-04
离线BG4IGX
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7470
只看该作者 9楼 发表于: 2006-02-04
刚才看cctv-4了,说在145.99兆赫可以收到^_^
离线BG3AIE
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9608
只看该作者 10楼 发表于: 2006-02-04
vk4sjw 20060204035608 nothing heard
zl3ga 20060204035249 nothing heard...
zl1dt 20060204035028 not a sqeak! nada!
wb3ivx 20060204034905 nothing in pa.
k0neb 20060204034747 nothing heard, hope for better in the morning.
vk4yoi 20060204034712 nothing heard
zl2ft 20060204034644 nothing heard at all
zl1aox 20060204034451 1 very weak signals detected withh ssb mode selected. unable to decode anything useful.
vk2it 20060204034416 nothing heard
zl2cwa 20060204034353 no signal
fede 20060204034209
zl1dgk 20060204034208 1 no signal, elv max 51
k177r 20060204034116 5 strong sounds of......nothing
vk4ari 20060204034038 nothing that can be confirmed
vk2zty 20060204034035 nothing heard
ta2x 20060204034026 bad signal
rw6aum 20060204033923 all night listening and no even 1 second voice
vk4jwt 20060204033842 two radios two antenna's one vert one beam no signal at all
vk4jam 20060204033749 nothing heard...outlook not good
n3mmh 20060204033527 1 very weak sig, barely heard.
vk4vhf 20060204033432
n3mmh 20060204033414 1 weak sig
vk2hef 20060204033233 nothing heard fm, s7 band noise on ssb
vk4it 20060204033220 nothing heard
bx1ad 20060204033019 nothing was heard. (max elv. 43 deg.)
全世界ham都没有听到信号....