ARLA/CLUSTER: Alguem consegue resolver o mistério da UVB-76 em 4625 kHz ?

[João Costa > CT1FBF]

Can YOU solve the mystery of UVB-76?

The Daily Mail newspaper asks its readers if they can explain the
mysterious radio signal on 4625 kHz known as the Buzzer

The mysterious transmissions from Russia are thought to have started
in 1982 and have continued ever since. Up until September 2010, the
station identified itself as UVB-76 (Cyrillic: УВБ-76), and it is
still often referred to by that name.

The station transmits using AM with a suppressed lower sideband (R3E),
but it has also used full double-sideband AM (A3E). The signal
consists of a buzzing sound that lasts 1.2 seconds, pausing for 1–1.3
seconds, and repeating 21–34 times per minute. Until November 2010,
the buzz tones lasted approximately 0.8 seconds each.One minute before
the hour, the repeating tone was previously replaced by a continuous,
uninterrupted alternating tone, which continued for one minute until
the short repeating buzz resumed, although this no longer occurs since
June 2010.

Read the Daily Mail story at
http://www.dailymail.co.uk/sciencetech/article-2877988/Can-solve-mystery-UVB-76-Radio-station-buzzed-second-1970s-no-one-knows-why.html

Wiki - UVB-76
http://en.wikipedia.org/wiki/UVB-76