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ISS上的中继模式再次打开 [复制链接]

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离线bd4rs
 
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5111
只看楼主 倒序阅读 0楼 发表于: 2006-06-25
这两天iss上的中继模式再次打开. 今天1:39bjt左右.iss经过南京上空时,我清楚的听到145.800下来的语音信号,是je2tlz的.另外,还有几个j台的.信号非常清晰.
有关信息,可到下面网站
www.issfanclub.com
http://pd0rkc.ontwikkel.nl/
www.arrl.org
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iss ham station now in crossband repeater mode for field day (jun 23, 2006) -- the amateur radio on the international space station (ariss) phase 2 station has been configured in crossband repeater mode for arrl field day! a chart of international space station field day pass times for north and south america appears at the end of "field day 2006: nasa releases iss north and south america pass times" on the arrl web site. "jeff williams, kd5tvq, activated the crossband repeater and even made some contacts over europe," nasa iss ham radio project engineer kenneth ransom, n5vho, told arrl on june 22. the crossband repeater uplink is 437.800 mhz. the downlink is 145.800 mhz. ransom reminds users that uplink doppler can be considerable. during field day weekend, the crossband repeater will be available only to low-power (qrp) stations following amsat criteria: no more than 10 w to a vertical or handheld antenna. ransom says williams and iss expedition 13 commander pavel vinogradov, rv3bs, may get on the air using the crossband configuration as time permits, but pass times for north america are not favorable, and williams and vinogradov are busy preparing for the arrival of the progress 22 supply vehicle. for field day, williams will give a report of "na1ss, 1 alpha iss," while vinogradov will give a report of "rs0iss, 1 alpha iss." contacts made via the iss crossband repeater count as satellite contacts for field day bonus points. contacts with the crew do not count for field day bonus points
离线bd8te
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4255
只看该作者 1楼 发表于: 2006-06-25
在17:50分左右收到bd4rs的呼叫
离线bd4rs
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5111
只看该作者 2楼 发表于: 2006-06-25
就刚才了,信号如何.tnx.
这次的机会应当是非常好的.听到一个好象是avl后缀的电台.覆盖区到了j台后,就都是那里的电台.j台的操作快速,熟练而简练.
在16:25分左右的一次,成功的与jh0pvf进行了通联,还有一个ja3flt不确定.
这次的中继模式不知道开多久,空间站下来的信号非常好,而且很容易打开.
离线BG2XJK
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7243
只看该作者 3楼 发表于: 2006-06-25
是的。刚才我在145.800也收到下行信号了,全是日本台
离线BG4REB
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316
只看该作者 4楼 发表于: 2006-06-25
'
就刚才了,信号如何.tnx.
这次的机会应当是非常好的.听到一个好象是avl后缀的电台.覆盖区到了j台后,就都是那里的电台.j台的操作快速,熟练而简练.
在16:25分左右的一次,成功的与jh0pvf进行了通联,还有一个ja3flt不确定.
这次的中继模式不知道开多久,空间站下来的信号非常好,而且很容易打开.
'
有同感。虽然台不少,但没有混乱的感觉,很有节奏。听rs下来的信号就像同频过来的一样。
离线BD6AHP
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3611
只看该作者 5楼 发表于: 2006-06-25
这次iss开启中继模式对地面台设备是有要求的,不是要求你好,而是要求你差:

it is being requested that **only** low-power (qrp) earth stations access the system. the definition of a qrp station for ariss will be the same criteria as the rules for qrp operations on echo (ao-51) for field day.

some examples of low power stations:

an ht (barefoot, no amplifier) with 10 watts or less output into any type of vertical whip antenna (rubber duck, etc) or handheld beam antenna (arrow type).
a mobile station with 10 watts or less output into car mounted mobile whip antenna(s).
a base station at 10 watts output into a vertical omni directional antenna on the side of the house.

examples that are **not** low power stations:

any type of high gain beam antenna, klm, m2, cushcraft, etc.
any station transmitting over 10 watts into any type of antenna.
离线BD6AHP
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3611
只看该作者 6楼 发表于: 2006-06-25
所以请大家不要用高增益指向性天线和大炮来对付这个中继了。
离线BD6AHP
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3611
只看该作者 7楼 发表于: 2006-06-25
另外需要注意的是iss中继与其它amsat的j模式转发器有所不同,它使用的是b转发器,所以请大家一定要校正400m上行的多普勒频移,否则你的频偏对别人是强烈的干扰。
离线BD6AHP
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3611
只看该作者 8楼 发表于: 2006-06-25
还有,因为明天(6月26日)进步号货运飞船将要与iss对接,届时将会关闭所有业余转发器,何时再开启就不知道了。
离线bd8te
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4255
只看该作者 9楼 发表于: 2006-06-25
bd4rs收你信号通过iss下来的信号59,我用的天线是2m5/8单段的gp,你的天线是?
离线bd4rs
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5111
只看该作者 10楼 发表于: 2006-06-25
1/4波长v/u双段gp.感觉做卫星通联效果还不错.
离线bg7ifp
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117
只看该作者 11楼 发表于: 2006-07-06
今晚iss两次飞过我头顶分别是20:20和23:31都被我抄收。




离线BG7JCR
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2722
只看该作者 12楼 发表于: 2006-07-08
'
这次iss开启中继模式对地面台设备是有要求的,不是要求你好,而是要求你差:
it is being requested that **only** low-power (qrp) earth stations access the system. .....
'
为什么呢? 不懂呀!