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What to listen to · Mystery stations
The Pip at night: the same marker on 3756 kHz
After sunset in Rostov the Pip leaves 5448 kHz and the same one-second pip goes out on 3756 kHz, where it reaches most of Europe. The night entry of the Russian channel marker.
What you hear
Exactly what the day frequency carries: a short pip once a second, without end, and on rare occasions a man's voice reading a callsign, number groups and a code word before the pips resume. Nothing about the station changes at night except the frequency. The background to the station, and what is known about who runs it, is in the main article.
Who transmits and why
The same transmitter in the Rostov region, serving the same military net. The move to a lower frequency is not a mystery at all: 5448 kHz fades over long distances once the sun goes down at the transmitter, and 3756 kHz is where the signal travels well in darkness.
When and where to listen
3756 kHz sits just above the 80 metre amateur band and behaves like it: nearly useless over distance by day, wide open at night. The Pip appears here around dusk in Rostov and stays until dawn there. From central and western Europe this is the frequency to use through the evening and night; receivers in eastern Europe, the Caucasus and Turkey hear it strongest. Amateur traffic nearby can be loud, so a narrow filter helps when the band is busy.
In ShackDeck
Station catalogue → Mystery stations → The Pip (night). The program picks a public receiver that covers 3756 kHz, tunes it and sets USB; no receiver, antenna or account of your own is needed. By day, switch to the main entry, The Pip, on 5448 kHz.