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North American Shortwave Pirate / Re: Yeti Radio 6920 USB 0046 UTC 10 June 2018
« on: June 10, 2018, 0102 UTC »
•1:00z we copy ya...I heard one song and now radio silence...back on...fading out..losing ya
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When you talk about numbers stations and military transmissions like EAMs, or any traffic on the HF-GCS network, much of the information is not actually known. That does not mean people do not have a good idea how / why things happen, however most of the time there is no actual documented proof you can point to. So be careful with any information you receive, some of it is quite good but some of it is junk, and proving either is pretty hard.
First thing you have to remember is that EAMs and Skykings are not numbers stations. Since they are not, they probably will not have similar habits to numbers stations. And indeed they do not. And then you must remember that such messages, the format of them, and any confirmation of what / how they are used, is classified information, so people who actually know are probably not going to say much. I can say that when I was active duty I occasionally sent and received messages very similar in format to EAMs (but they were not EAMs), and that is pretty much all I am going to say on the matter.
A numbers station often has fixed group sizes, for example maybe 3, 4, 5, or 6 characters per group, depending on the station. And so this results in a character count of some multiple of this group size. And also note that most numbers stations typically do not mix numbers and letters, they are mostly all only numbers, but when they use letters they are typically all letters. This may all be a result of the type of encoding that is done to this traffic. Numbers stations also typically follow specific schedules, HF-GCS traffic typically does not.
But coded HF-GCS traffic is not a numbers station, and an EAM might have any number of characters, and so it will not have specific groups. And the HF-GCS messages mix numbers and letters, however some numbers and letters are never seen. Why is this? Speculation, but I believe it is because the content is different and this traffic is encoded in an entirely different way
As for what is a SKYKING, that is a point of contention. We know, from official documents and from observing habits, that a SKYKING is a higher priority message than either normal traffic or an EAM. Some documentation ties SKYKINGs to SIOP (Single Integrated Operational Plan) which is part of the control and use of nuclear weapons. But we also have good indication that SKYKINGs can be tied to other highly important platforms and uses, such as unarmed reconnaissance aircraft.
We also know that SKYKINGs are heard less frequently than other types of messages. You average day on the HF-GCS network will probably have several, if not many, EAMs. Some times you may have half a dozen, or more, in a single hour. But you can go days without a SKYKING, or you may have a dozen SKYKINGs in a single day.
And then it is a safe bet that some EAMs and SKYKINGs are fake traffic, filler messages transmitted when there is no need for them, just to prevent anyone from using traffic analysis as an indicator of force activity.
So I think it safe to say, SKYKINGs are, when real, more important messages than other HF-GCS traffic, and that is really all we know about them.
Some people think if they hear a SKYKING that means something important is happening or about to happen, but to date no one has been able to tie either EAMs or SKYKINGs to world events. For sure there have been 7+ SKYKINGs in the last 7 days and we are all still here.
T!
You get to know what is normal day to day traffic after spending some time listening to them. They have a quarterly(?) exercise that might make one think ww3 has broken loose from the frantic messages, however. There's also a distinct difference between skykings and all the rest.
6900 kHz and nearby frequencies are very heavily used by Spanish speaking freebanders, some of which are probably licensed ham operators...some of which are probably not...so use of 6901 kHz is not surprising. The operating habits are similar to 11 meter CB freebanders who work SSB mode above and below the legal CB radio band. I have monitored 6900 kHz LSB extensively and have determined that 6900 LSB is the "calling channel" or home channel for these operators. Often they'll do a call on 6900 and QSY to 6905 or 6895 or 6920 or something like that. I've heard stations coming from North America, South America, Central America and the Caribbean talking to each other on this frequency and nearby. They usually use 5 kHz steps and mostly stick to LSB mode, although I have logged activity on 6900 USB several times...usually when 6900 LSB is busy.
Well, now thats interesting. Whatever the target was it was one outrageously powerful signal here in south central Wisconsin. I guess 300 KW will do that.
Thanks for the feedback
Don