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The Lincolnshire Poacher played a folk tune for thirty years, then stopped

2026-07-14 · EA5IYR

For about thirty years, anyone tuning 5422 or 6959 kHz at the right hour heard the same thing: two bars of an English folk song, played on something that sounded like a cheap electronic organ, over and over.

Then a woman with an English accent counted from zero to nine, and read five-figure groups for the better part of an hour.

It was called the Lincolnshire Poacher, after the tune. Its formal designation is E03, and it was almost certainly operated by the British Secret Intelligence Service. It transmitted from RAF Akrotiri in Cyprus, and it went silent in July 2008. Nearly half the airtime carried no information

Look at the proportions and something odd stands out. The interval signal and the sign-off together take roughly as long as you might expect the message to. Add the count-up and close to half the transmission carries no payload whatsoever.

That looks like waste until you consider the person on the other end.

They are somewhere they should not be, working a receiver they would rather not be caught with, on a frequency that fades in and out. They need to find the station, be certain it is the right one and not a broadcaster drifting into the channel, and settle the receiver before the digits start.

And they cannot afford to miss one. With a one-time pad, a single mis-copied digit does not garble the rest of the message — it destroys it.

Seen that way, the tune is not an eccentricity. It is error prevention, paid for in airtime. The sister station nobody talks about

E03 had a twin. Cherry Ripe used a different English tune, ran on a different schedule, and was widely assumed to serve the Asia-Pacific region rather than the Middle East and Europe. It outlived the Poacher by a few years.

Two stations, two tunes, two regions, one operator. It is one of the clearest pieces of structure ever visible in a field that mostly offers guesswork. Why it stopped

Nobody has said, and nobody is going to. The plausible reading is the dull one: the agents it served were retired, reassigned or given something better, and the cost of running a high-power transmitter site stopped being worth it.

What did not happen is the thing people assume. Numbers stations did not die out because the method was broken. Cuba redesigned the format rather than abandon it, and Russia started a new one sixteen years after the Poacher went quiet. Hearing it now

You cannot. There are recordings, and they are worth hearing once, because the tune is genuinely unsettling in a way that reading about it does not convey.

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Sources: Wikipedia — Lincolnshire Poacher), Wikipedia — Cherry Ripe), Numbers-Stations.com — E03, Numbers & Oddities E03 profile (PDF).