Tuesday 18 November 2008

A lot of E25 logs!

This morning we had 2 transmissions on 6140 and 4(!) on 9450 kHz. The last transmission on 9450 (ID "222") was over Polish Radio International. The sound samples are trimmed a bit (to get rid most of the 1000 Hz tone and the silent ends). So here we go...

E25 6140 AM 0836z:

1000 Hz tone
804 repeated several times
5488 0301 6511 2157 2589 9588 2447 9952 8795 6115 0301 8721
"Rebeat" x3
...
EOM EOT

(sound sample 1)

The signal was S9 peaking +10dB, carrier began slightly off-frequency.

E25 6140 AM 1019z:

1000 Hz tone
205 repeated
9774 6277 5844 1083 0472 3266 4393 2509 3442 7900
7095
"Rebeat" x3
... audio problems ...
EOM EOT

(sound sample 2)

Note at repeat the machine sounds like having a slower pace. Signal was S9 with peaks +10dB and some QSB & thunderstorm QRN.

Let's see what happened on 9450 kHz ...

The "a" (E25a) denotes a type: (ID), (number 1) , ... , (number n) transmission. These believed to be "control" transmissions. Also all recordings on 9450 kHz made with the receiver set to USB, while the actual TX could be in AM mode.

E25a 9450 USB 1154z:
1000 Hz tone
277 1 2
EOM EOT

(sound sample 3)

The transmission started off-frequency.

E25a 9450 USB 1211z
"Inte Omri" song
830 21 from the mechanical YL
EOM EOT

(sound sample 4)

The signal strength was lower than the previous (and the next) transmission.

E25a 9450 USB 1238z:
1000 Hz tone
785 20
EOM EOT

(sound sample 5)

And here's a transmission over Polish Radio International:

E25 9450 USB 1345z:
"Arouh Le Min" song (the other song by Umm Kalthoum)
222
8111 2061 9711 9810 4916 6472 2366 2183 5413 4651
7691 3668 5764 9317 9756 9711
"Rebeat" x3
EOM EOT

(sound sample 6)

So that's the end of a busy E25 day! Please be warned; tomorrow we might have repeats of some transmissions on 9450 kHz.

2 comments:

Anonymous said...

just want to thank you for this blog. astonishly interesting. please, keep posting. I'll subscribe to your RSS.

Manolis said...

Thank you!

I'm trying to post as many of my findings but as you can guess sometimes due to limited time i don't post much. Thanks for subscribing!