【无线电史话】打不死的“小强”| 美1967年报废卫星 46年后再次发射信号
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作者：Phil Williams G3YPQ
BG5WKP 朱轶 编译
American satellite starts transmitting after being abandoned in 1967
美1967年报废的一颗卫星对外发射信号了？
An American satellite, abandoned in 1967 as a piece of Space Junk has begun transmitting again after 46 years.
一颗美国1967年废弃的卫星在46年后开始发射信号。
An Amateur Radio Astronomer in North Cornwall accidentally picked up the signal and after cross checking with various lists, has identified it as LES1 built by the Massachusetts Institute of Technology and launched in 1965. The satellite failed to reach its intended orbit owing to a wiring error and has been drifting out of control ever since.
在北康沃尔的业余无线电天文学家偶然收到信号，在检查了发射卫星列表后，确定了它为于1965年发射的麻省理工学院制作的卫星LES1。该卫星由于接线错误未能达到其预定轨道，此后一直处在漂移失控状态。
Phil Williams G3YPQ from near Bude noticed its peculiar signal drift caused by its tumbling end over end every 4 seconds as the solar panels become shadowed by the engine. ‘This gives the signal a particularly ghostly sound as the voltage from the solar panels fluctuates’ Phil says.
菲尔·威廉姆斯G3YPQ在Bude附近发现其独特的信号漂移，当太阳能电池板被引擎遮挡时，每4秒翻滚一次。太阳能电池板的电压波动使得信号变成一个特别可怕的声音”菲尔说。
It is likely that the on board batteries have now disintegrated and some other component failure has caused the transmitter on 237Mhz, to start up when its in sunlight.
很可能在卫星上的电池已经解体，当阳光照射到这些电池组造成发射机在237 mhz又开始工作了。
LES1 is about the size of a small car, It is not likely to re-enter the atmosphere for a long time as the orbit is still relatively high. It poses no threat other than that caused by the thousands of other pieces of space junk in orbit.
LES1的大小和一辆小型汽车类似，因为轨道仍相对较高，它在很长一段时间内不可能进入大气层。和造成成千上万的其他部分在轨道上的太空垃圾相比，它不构成威胁。
Phil says its remarkable to think that electronics built nearly 50 years ago, 12 years before Voyager 1, and long before microprocessors and integrated circuits, is still capable of working in the hostile environs of space.
菲尔表示，值得注意的是其电子元器件是近50年前制造的，比旅行者1号还要早12年，比微处理器和集成电路制造就更久远了，但仍有能力在充满辐射的环境空间里运行。
Listening to the signal you can easily imagine the craft tumbling over and over every 4 seconds and the transmitter starting up as the sun rises. He refers to the hobby as ‘Radio-Archeology’!
收听信号可以很容易地想象卫星每4秒反复翻滚一次，太阳升起的发射器启动。他将这个爱好比作是“无线电考古”!
Phil Williams G3YPQ
N.Cornwall
业余无线电微信号：ham_cn
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