ABC was discovered in a FTJ frequency. It is on air right now, on 5339 USB with a nice S8 signal. The strange thing is the existence of the Jammer, at the same frequency but with a weaker signal. How odd! Why to jam a station calling "ABC" and nothing else? Maybe the Jammer knows more about the purpose of ABC, with no messages so far... Here's a short sound sample!
HAPPY NEW YEAR!The Arabic language Broadcast Station which is on 7540 kHz (E10 frequency) is also being Jammed. But this Jammer is different from E10's Jammer. Here is a very short clip. Please compare with my older posts regarding E10 Jamming.
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.
Yesterday evening I was hunting for the famous E10 Jammer and I accidentally found the 6842 kHz, 2000z transmission of XPA. The transmission was interfered from the E10 EZI2 transmission from 6840 kHz, also at 2000z. Here's the recording. XPA was very strong (+10 to +20dB) but someone can listen the YL and the jammer.
And another surprise a few moments later! On 2456 kHz (an E10 ART frequency) there was a nice ART/PCD mix! The ART message was a g44 UMHQN and PCD has the long g106 message starting with AEOYY. Both messages were sent complete, till 2023z when PCD ended.
Sound sample will follow...
This is the Jammer alone, as recorded today at 0446z on 6840 kHz.
This morning I decided to check 6840 and 7690 for any jamming over EZI. Interestingly, the jammer started at 6840 kHz and then decided to jam 7690 kHz, even if there was an EZI2 message.
The recording is from 0627z this morning, on 6840 and 7690 kHz, USB mode.
The first 1min 58 sec is on 6840 kHz. You can hear the YL calling EZI2 just before 0630z. Then at 1min 33sec the jammer stops. I'm still on 6840 kHz. At 1min 53sec you can hear some code and then at ~1min 59sec I switched to 7690 kHz. Hey! The jammer is here now! At 3m 18sec or ~0630z EZI2 starts normally. I switched back to 6840 at 4min 24sec but no jammer there, just CW. Then I switched back to 7690 kHz, till the end of EZI2 transmission, The jammer stopped just few seconds before the YL.
I continued monitoring EZI for this jammer game. But something else happened during the EZI transmission 0n 7690 kHz, Sunday 21 September 0830z. At 0840z another E10 message transmitted in parallel to EZI g31 HCEZY message! The second YL had a slower pace! If you take a closer look at the recording, you'll notice there is a small frequency difference between the original and the "culprit" E10 transmission.
Last weekend I was able to do some monitoring other than E25. What caught my attention was a "bubble" jammer on E10 EZI frequencies 9130 kHz and 7690 kHz.
This was recorded on Saturday 20 September at 1002z on 7690 kHz, USB mode. EZI carrier is slightly off, and while I was playing with mode settings, the jammer appeared!
I continued monitoring EZI and the Jammer. It seems they don't jam all the messages. Also sometimes the Jammer is present before E10 lady starts. They also avoid jamming EZI2 transmissions.
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