Twenty-seventh edition of the N&O column / Spooks newsletter

(Date: Sun, 2 Jul 2000 12:20:10 +0200 (CEST)

Morse stations | Voice stations
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Voice stations

Unid

JMM reports another « transmission that sounds like a tape played with the Fast Forward key depressed » on 7 June at 2312 UTC on 6617 kHz USB. A chat between two operators was heard. Transmissions like these interfered with several E10 broadcasts in the recent past. The frequency is used by Russian volmet stations. JMM continues: « IMHO, it is some kind of scrambling acting on frequencies (Peak signal at 5000 Hz). With such a system, a moderate normal signal (normal voice) must be converted at a recipient's location as either some hissing nuisance (but not redhibitory) or simply ignored. This would explain why they do not seem to care much about 6617 VOLMET. »

JMM could be right. There are similar scrambling techniques around. A couple of years ago I received a tip about a weird station most probably from Nigeria or a country close to it- that used distorted music to scramble their transmissions, but the way they used it was not very effective. I used a narrow filter on one of the side bands and could hear the voice without the music. The operators didn't always use the scrambler. When they didn't use it they were probably just chatting. I couldn't understand what was said because they spoke a local language (I presume).

Three note oddity [G04]

Two different messages this month. Both Axel and Hans-Friedrich reported the second one. HF sliced the messages:

Message 1

Message :

82333 88014 64165 72072 71747 56038 51775 05186 55121 23055 36365 52037 71565 22605 84347 72535 86412 04367 72467 44072 75472 81813 00048 85713 10251 23008 27154
= 27 groups

Sorted :

00048 04367 05186 10251 22605 23008 23055 27154 36365 44072 51775 52037 55121 56038 64165 71565 71747 72072 72467 72535 75472 81813 82333 84347 85713 86412 88014

Remarks :

No "9". Same behaviour like S10E!!!

History :

Message 2

Message :

03040 20000 57501 72134 37345 78552 43595 11414 85506 78333 20036 15916 10865 72136 13256 98637 95176 86248 89099 03040
= 20 groups

Sorted:

03040 03040 10865 11414 13256 15916 20000 20036 37345 43595 57501 72134 72136 78333 78552 89099 85506 86248 95176 998637

Remarks :

• new message in the middle of the month. Only 20 groups.
• return of the "9" (which sounds unfortunately like "0")
• strange "20000"
• "03040" at the beginning and at the end of the message

Morse stations | Voice stations
Agency profile: Hungary | Logs
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