【火腿故事】Mario Filippi (N2HUN) | 讲述用短波频率RTTY模式追踪海盗的故事
Tracking High Seas Pirates on Shortwave Radio
玩收音机的香肠也能很high，Mario Filippi讲述用短波频率追踪海盗的故事，RTTY是个好方式！
作者：Mario Filippi (N2HUN)
编译：朱轶 BG5WKP
Ahoy! After spinning a radio dial for over a half-century, shortwave listening still provides a source of adventure and interesting intercepts. While major broadcasters continue to move to the Internet and dwindle in number, there nonetheless remains plenty of utility intrigue to be had; you just need to know where to look, and be comfortable with other modes of communication such as RTTY (Radioteletype).
嘿！无线电的旋钮在拨了半个多世纪，收听短波仍然不失为一种冒险和有趣的监听活动，虽然主流的广播公司继续搬到互联网上，数量不断减少，然而仍有很多监听方式可以利用，你只需要知道在哪里看，并适应其他模式的通信方式如RTTY(电传打字)。
RTTY remains on HF (3 – 30 MHz), albeit mostly encrypted, but there are some stalwarts of this mode that transmit important and interesting information for ships at sea. The information can take the form of weather broadcasts, hazards to navigation, information on ships lost at sea, and pirate activity. Yes, pirate activity but not radio pirates; real honest-to-goodness modern day pirates looking to loot, plunder and prey upon commercial ships making an honest living or other leisure watercraft just out having fun.
RTTY仍在HF段(3 - 30 MHz)，虽然主要是加密的，但也有一些使用这种模式传输的船只在海上提供一些重要和有趣的信息。这些信息可以气象广播、航行预警、船只在海上失踪信息和海盗活动。是的，海盗活动但不是海盗电台；这是真正的现代海盗掠夺商船或是其他的休闲船的记录，真真正正的发生在我们的生活里。
Who knows what dangers lurk behind that dial? Trusty AOR AR-3000 receiver and SignaLink™.
有谁会知道这频率背后潜伏的危险，就是AOR AR-3000和 SignaLink™。
Has your interest been piqued? When avast mateys as I spin ya’ a yarn on how to find out where these sea-faring scoundrels lurk from the Caribbean all the way to the South China sea!
你的兴趣被激起了吗?如何像航海家一样抽丝剥茧般找出这些于潜伏于从加勒比海到南海的坏蛋!
Pirate activity is not something of the past; it exists today and is a threat conducted by ragtag armed ragamuffin groups. To keep abreast of the action you’ll need the following gear: a shortwave radio with single sideband (SSB), a decent antenna, a means of decoding RTTY, and WLO, a station from Mobile, AL that transmits information to ships at sea.
海盗活动不仅仅发生在过去，在今天同样存在，这群衣衫褴褛的武装团体对海上安全航行构成了威胁。想要追踪海盗需要以下设备：单边带短波收音机、一个可行的天线、解码RTTY的方式、传输信息给海上航行的船舶的移动台站。
You’ll do well to add WLO’s frequency to your receiver’s memory list as it’s a pretty active station that faithfully serves the sea-faring community and is one of the gems on HF.
你需要添加WLO频率到收音机的存储菜单中，因为该频率是一个非常活跃的电台，忠实地服务于航海社区和是也是HF段全球环境监测系统的一部分。
First, tune your receiver using USB (Upper Side Band) to around 8.472 MHz and listen for that warbling sound. You will also need a way to pipe the audio from your shortwave receiver to a computer (I use a SignaLink™ USB) and a decoding program for RTTY, such as MMTTY.
首先，打开收音机接收USB(上边带)约8.472 MHz，监听颤音。您还需要一种将短波接收机的音频传输到电脑装置(我使用SignaLink™USB)和RTTY解码程序，如MMTTY。
To decode you’ll need to set the baud rate (45.45) and shift (170 Hz) on MTTY (or software program of choice) and tune your radio slightly up and down frequency until the software starts decoding.
解码需要在MTTY设置波特率(45.45)和移频(170赫兹)(或软件程序自动选择)，打开接收机，调到频率接收直到软件解码开始。
You may have to press the “Reverse” or “Rev” selector at times. MMTTY is my favorite for RTTY decoding, and a picture of it is below.
你可以按REV按钮选择时间段，MMTTY是我最喜欢的RTTY解码软件，如下图：
WLO, Mobile AL, with RYRY idling loop, MMTTY decoder, 45.45 bauds, 170Hz shift, “Rev.”
MMTTY is available as a free download from Makato Mori, JE3HHT. I’ve used his program for over a decade and it performs well.
MMTTY可以在Makato Mori, JE3HHT官网上免费下载，我使用这个程序有十二年了，性能良好。
You can also use MultiPSK or FLdigi to decode RTTY so it’s the user’s choice as to which is a better fit.
你也可以使用MultiPSK 和 FLdigi 来解码RTTY，这是你的选择。
Anyway, what are these pirates up to? Well the next few screenshots (click to enlarge) show some interesting activity as per WLO’s RTTY transmissions:
无论如何，这些海盗在做什么?接下来的几个截图、WLO通过RTTY传输显示了一些有趣的信息：
Pirates use element of surprise with guns and knives as armaments.
海盗使用奇怪的枪和刀作为武器。
Somali pirates reportedly armed with automatic weapons and rocket-propelled grenades. Yikes!
据报道信息，索马里海盗有手持自动武器和火箭弹。呵!
Give ‘em hell boys! An alert bulk carrier crew aborted hijacking with teamwork and water cannon.
报警的散装货船船员团队合作用高压水枪击退了海盗。
Ships are encouraged to report pirate activity via FAX or phone.
鼓励船只通过传真或电话报告海盗信息。
Well mateys that’s enough high seas adventure for now, so first shove off to the galley for some grub (or grog) and then head to the radio room, turn on that rig and get ready for action on HF, you’ll find plenty to choose from, it’s out there for you.
这片公海还有很多冒险故事，你只要到厨房，拿一瓶烈酒，走到你的电台工作室，打开设备，在HF段做好收听准备，你就会接收到很多可以选择的信息。I would like to thank the operators of WLO for providing such a valuable service to mariners and for providing us radio aficionados with interesting reception! And thanks readers!
我要感谢 WLO的操作人员为航行的人提供如此宝贵的信息，同时为我们这些收音机的狂热爱好者提供如此有趣的信息，感谢大家。
P.S. Note that WLO alternates from RTTY to Sitor B so just make sure you are listening to the RTTY broadcast. If the transmission is in Sitor B then you can use a NAVTEX (e.g. YAND) decoder instead.
Thank you so much, Mario, for sharing yet another fascinating aspect of our radio world! FYI: I’m planning on purchasing a SignaLink USB at the Dayton Hamvention this year.
感谢Mario给我们分享了收音机世界里如此令人着迷的信息，我也计划在今年的代顿火腿市集买一个SignaLink USB 玩玩。
source: swling
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