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We are listening 20: Hunting for radio signals near Arctic Ocean 我们在倾听 20:在北极圈收听中国电台节目  

2013-11-20 08:46:24|  分类: My Articles 原创 |  标签: |举报 |字号 订阅

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We are listening 20: Hunting for radio signals near Arctic Ocean
我们在倾听 20:在北极圈收听中国电台节目 (转载新华社稿件)

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We are listening 20: AM-DXing in Finland 我们在倾听 20:在北极圈收听中国电台节目 - jshort - China DX Club 电波爱好者

 

At 2013-11-20 09:01:30,"Mika Makelainen" <mika(at)makelainen(dot)com> wrote:

Nihao Jonathan!

Yes, thanks, I have seen the article. There are actually several articles:
- news report in English at
http://news.xinhuanet.com/english/culture/2013-11/18/c_132898318.htm
- news report in Chinese at http://news.xinhuanet.com/2013-11/19/c_118207586.htm (and republished by at least a dozen newspapers in China)
- CNC TV report and script in Chinese at
http://news.cncnews.cn/2013-11-18/124029576.html
And there should also be a TV report in English, but I haven't found it yet.

Hopefully Chinese radio stations will now learn something more about DXing - and will reply to our reports more often than now ;)

At http://www.dxing.info/dxpeditions/aih29rep.dx you can find my report about the DXpedition, which Xinhua took part in.

By the way, I have some news for you. I have just found two new Chinese stations, which are not listed in the WRTH. Aihui PBS from Heilongjiang on 999 kHz, and Heilongjiang PBS (probably Life Service) on 648 kHz. Unfortunately Heilongjiang PBS has not responded to my reports. Do you happen to have any alternative contact information for the station (other than listed in the WRTH or the station website), for example email addresses of some people who work at the station?

73
Mika
 

 

http://c.blog.sina.com.cn/profile.php?blogid=956242578900062r

新华网赫尔辛基11月18日电(记者李骥志 张璇)北极圈的第二场雪越下越大。记者抵达目的地时,已经是晚上9点多。顺着车灯望去,隐约看见森林中的小木屋,这是米卡和吉姆一手创建的远程收听站。

收听站位于芬兰北部的艾赫基涅米,距北冰洋约100公里。这里人烟稀少,电器干扰少,能清晰地收听到远距离的中波广播。

米卡和吉姆是拥有30年经验的远程收听爱好者,每年入冬前都会在这里住上两周,专心收听世界各地的广播节目。

他们在周边森林里水平铺设了14根铜线作为天线,每根天线长约1公里,分别对准不同方向。为了防止驯鹿和驼鹿撞线,他们把天线架在距地面2米高处。米卡说,这些设施堪称全球无线电收听站中条件最好的了。

由于无线电信号传输“怕光”,米卡和吉姆不得不赶在世界各地黑夜降临时收听广播。米卡告诉记者:“芬兰的下午是东亚的夜晚,这时候是收听中国、日本、泰国电台的最佳时间,而午夜则是收听南美电台的最佳时间。”记者带上耳机,居然听到里边传来“日照人民广播电台新闻综合频道”的播音。

米卡和吉姆轮流值班,力争覆盖所有时段。他们要做的工作很多,收听、录音、确认频率、确认方位,以确认电台身份。

由于远距离传输信号不稳定,各种语言报台名也不是一下子就能听懂,往往一家电台听了十几年也无法确认其“身份”。通常,他们在有了最初判断后,会把一段录音寄给所认定的电台,以求得到对方回复。迄今,米卡已收到5000多封回复。而吉姆得到了近7000封,保持着芬兰远距离收听纪录。吉姆相信,这个成绩在世界上也无人可比。

吉姆告诉记者,作为远距离收听者,有两个时刻最令人激动:一是多年来一直收听一家电台,突然有一天辨出了它的“身份”;二是把一段录音传给这家电台后,收到对方肯定的答复。

米卡向记者展示了一封深圳广播电台发于2012年5月的答复函。信中说:“米卡先生……经确认,您收到的声音是我台中波广播的信号,您是迄今为止我们所知的最远的听众。”

米卡说,在反复发信求证后,近三分之二的中国电台会予以答复,他对此由衷感激。“如果世界上所有电台都能回复,将是对我们多年来努力的最好回报。”

远程收听是无线电爱好的一种,起源于上世纪中叶,当时调幅(AM)广播正在盛行。调幅广播发出的信号经过电离层反射,可以达到很远的地方,这激发了人们收听千里之外广播节目的兴趣。

随着调幅广播逐渐被音质更好的调频(FM)广播取代,以及互联网的流行,像以前一样热衷远程收听的爱好者数量锐减。目前,芬兰远程广播收听爱好者协会仅有700名成员,而1980年这个数字还是2000人。

虽然流行趋势发生变化,但是米卡和吉姆觉得,这个投入了30年的爱好值得他们继续坚持下去。现任芬兰国家广播公司国际新闻资深编辑的米卡说,他从远程收听中获得了不少工作灵感。吉姆则告诉记者,他创意的卡通作品《迪比狗》在中国流行,起初就是通过远程收听与广东一家电台结缘。

目前艾赫基涅米的14根天线中已有4根能够接收中国各地的广播信号,收听中国众多的普通话和方言广播已经是米卡和吉姆生活中的一大乐事。

 

Hunting for radio signals near Arctic Ocean
 
http://news.xinhuanet.com/english/culture/2013-11/18/c_132898318.htm
 
 

by Li Jizhi, Zhang Xuan

HELSINKI, Nov. 18 (Xinhua) -- As winter approaches, it takes a huge effort to drive north and to find the tiny DXing cabin in a remote, snowy Arctic forest. The endeavor may, however, prove worthy.

DXing is the hobby of receiving or identifying distant radio or television signals, DX being the telegraphic shorthand for "distance."

Mika Makelainen and Jim Solatie spent two weeks in northern Finland in early November, listening to radio programs coming across the oceans and the continents.

WELL-EQUIPPED STATION

Being active DXers for more than 30 years, the two middle-aged men travel 1,200 km from Helsinki to Lapland in late autumn every year.

They are cofounders of the Aihkiniemi DXing station, located about 100 km from the Arctic Ocean. Away from TVs or other radio interference, this sparsely populated village is a unique place to receive medium wave signals.

Over the years, they have equipped the station with 14 metal-wired antennas, a valuable facility which they believe could be the most advanced in the world.

Each about one kilometer long, the antennas are fixed on trees, lifted over one man's height from ground, and spread along different directions towards the other side of the globe.

"We have to lift them up in order to prevent the reindeer and moose from bumping into them," said Mika, while trudging in thick snow, checking the antennas with a long pole.

The longer the antennas are and the better angles they are placed, the more capable they are of catching signals that have drifted and bounced over here from far away.

In below-zero temperatures, they live in a wooden cabin, equipped with a kitchenette, a composting toilet, a room for two beds and a 13-square meter working room.

However, DXers make the working room look more homely by filling it with packages of chocolate, cheese and berries.

Seated inside with headphones, Xinhua reporters could clearly hear the broadcasts of a number of Chinese radio stations including weaker ones like the People's Broadcasting Station of Rizhao, a city of Shandong Province, in Eastern China.

EXCITING HOBBY

As sunlight is a major factor that affects propagation of radio signals, they have to chase the darkness around the world, where medium waves travel faster.

"Afternoons are a good time for listening to Asian radio stations, whereas during the night signals from Latin America are stronger," said Mika, showing a world map indicating how the borderline between day and night changes over 24 hours.

DXers may be the only people who don't like to see the northern lights, or aurora borealis, since solar activity can amount to a disaster for DXing, preventing long-distance reception from the Far East and North America.

Mika and Jim wish they could keep awake every minute, and they take shifts, day and night, sitting in front of the laptops.

They really have a lot to do -- to identify the frequencies of received channels, their location and, of course, the languages spoken in the programs. They even record the programs so that they have enough time to recognize them back in Helsinki.

While this seems a mission impossible for most people, Mika and Jim each boast of having recognized thousands of radio stations in over 200 countries and regions.

"You are the farthest listener we have ever known till now," says a confirmation letter from Shenzhen Broadcasting Station in Southern China. A senior official of the station replied in May last year after receiving a recorded passage sent by Mika.

Mika and Jim now have one wish -- the foreign radio stations would reply to their reception reports, confirming if the signals they have received in far-away Arctic really originate from the radio stations in question.

DXing is a hobby maintained by tens of thousands of fans around the world. The activity first flourished in the middle of the 20th century, when AM radio stations were more popular than FM stations.

While AM stations are intended to cover smaller areas like cities, medium wave transmissions are often reflected by ionosphere and reach unexpected places.

Like sports enthusiasts who compete for speed and strength, DXers compete for the amount of stations they can recognize.

"When you hear a new station in your headphones, and you realize immediately wow I have been trying to recognize this station for 25 years and now I got it. So that's the big moment," said Jim.

However, it took Jim's wife almost 30 years to accept his passion, since he usually stays in the northern forest for two weeks annually, leaving the family members at home.

UNCERTAIN FUTURE

Mika remembered that a couple of decades ago he used to be the host of the chief editor of the English Service of China Radio International at his home in Finland, thanks to his hobby in DXing.

Now an experienced correspondent himself working in the Finnish Broadcasting Company (YLE), Mika said he felt no less addicted to the hobby, although he could no longer do DXing for 20 hours a day.

There are far fewer DXers than decades ago, as AM stations around the world are being replaced with FM transmitters to improve the technical quality of radio broadcasting. It is not possible to receive FM signals from quite as far away as AM signals. Moreover, youngsters are fonder of listening to the radio on the Internet.

There are only about 700 members in the Finnish DX Association today, compared with over 2,000 in the 1980's. Among the association's members, only a minority are active DXers, said Mika.

Admitting the popularity of the hobby has diminished, Mika and Jim both insist that DXing has been tremendously beneficial and rewarding.

Mika said he valued the opportunity of meeting anchors, editors and producers in different nations, and considers these contacts very valuable both professionally and personally.

Programmers are currently developing new computer software, which enable easier DXing by recording large portions of the radio dial, measuring exact frequencies, improving sound editing, and even recognizing languages.

"They develop the software not necessarily for marketing, but mainly out of enthusiasm," said Mika.

The good news is while European countries shut down AM transmitters, Nordic DXers can receive more radio stations in surrounding areas like Asia and Africa and increase their portfolio.

For instance, the closedown of a nearby AM station in Russia has paved the way for Mika and Jim to catch Chinese and Japanese stations on a frequency which was previously very disturbed due to strong interference.

Editor: Chen Zhi 

 

 

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