E10 Jammers get aggressive
Right now (1830z) there are two Jammers on 4880 kHz. E10 sends a 115-group message starting with "GHRCA..." to ULX, and both Jammers are on the same frequency! Is this a mistake, or a ferocious attack by all means, to ULX?
So far I believe that whoever operates the Jammers, can transmit at most with two jammers. This time he/she decided to use both Jammers on the same frequency.
Here is a part of the transmission. The Jammers sometimes nearly wins ULX. Also take a closer look at their time offset in the following spectrogram images:
There is a ~25ms time difference between the two Jammer signals. Well, you can hear and see that both remain constant in terms of strength (ok both affected by a slow QSB) so I don't think this is a weird propagation phenomenon. If any of you have a different opinion, feel free to post.
The Jammers stopped at 1851z, while E10 continued with the repeat of the message, plus a weaker broadcast station in the background. E10 QRT at 1855z and the BC QRT at 1859z.
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3 comments:
Hello my friend,
well..I have been monitoring the jammers in themiddle east for a while ...since 1990 as a matter of fact , and I can tell you that the only active jammers are located in Iran. you may try 7540 kHz from around 17.00 UTC and you can here a similar jammer with the same strength trying to beat V O Mesopotamia in kurdish . also I think the jammers are targetting V.O.Iranian kurdistan on 4850 +/- 5 khz more to avoid jammer.
all the best my friend
Mr.DXer
Hi Manolis!
See here:)) - http://ru.youtube.com/watch?v=zQmsYDQ0cUM
Poacher
@Mr.DXer:
I am familiar with 7540 kHz jamming. Others also mention Iran so this is our best guess. It is interesting that whoever tries to jam E10 uses only 2 jammers when there are a multitude of E10 transmissions... Maybe the jammers know more and do "surgical" hits...
@Poacher:
Hello Poacer! Thanks for sharing your video with us! The low-light conditions are so spooky hihihi!
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