More on E10 jamming

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.

...and EZI being jammed by E10!

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.

E10 EZI being jammed

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.

E25 switched to winter time

Since August 28-29, Egypt switched back to winter time. E25 also shifted its schedules +1 hour. So someone can except a transmission on 6140 kHz at 0800 UTC - 1200 UTC and on 9450 kHz at 1200 UTC - 1400 UTC. Good luck!

Anothe mix of music and voice

Last Saturday, 16 August, E25 had a 35-minute long music session (and some brief voice but no real traffic) on 6140 kHz, starting at 0936z.

Here is the entire transmission (a bit cleaned-up using the usual software techniques) recorded in USB mode. An initial carrier offset is apparent in the beginning of the transmission. If you're going to listen the sample with good-quality speakers (good bass response), please keep the volume down (not to scare your siblings!)

Mr. DXer also logged the transmission and identified one more song from Kalthoum, "What can I say about missing you." at ~0954z, and songs of Chris Be Burgh.

E25 rocks on 6140, then on 9450!

E25 on 9450 kHz playing "Don't pay the ferryman"!



And this one shows my scanner (Icom R20) with its stock antenna (ok, ok, I'm cheating... placed near the window for better reception) also tuned to 9450!



A lot of odd things happened today... music started on 6140 at 0918z and ended at 1003z. Then at 1006z a carrier appeared on 9450 kHz and a mix of music and E25 transmissions occurred till 1147z!!!

If you still don't think there's a connection between the music heard on 6140, 9450 and E25, just listen to this! It starts as a normal E25 transmission (well... wrong frequency! 9450 instead of 6140!) but then... Please be patient and listen the whole file. What do you think now? You can verify that it's not something edited, since there's a BC station audible in the background (which should be WYFR Family Radio).

ENJOY!

Athens HF-FAX service improves its transmission quality

The local HF-FAX service, Athens, suffered from bad transmission output (probably too much audio level in an SSB transmitter). See my older post. Nowadays all seems to work fine; the image quality is superb:

8105 kHz USB, 03/08/2008, 1007z

8105 kHz USB, 03/08/2008, 1019z

Both images logged yesterday morning on 8105 kHz USB mode with a +20dB signal. Athens also transmits on 4481 kHz (had an S9 signal). Usually the lowest frequency is better received at my QTH, but if ionosphere permits (relative) local propagation on higher frequencies, the 8 MHz transmission is better, with less multipath distortion (fuzziness of the lines).