A mysterious shortwave radio station has recently been broadcasting a series of numbers amidst ongoing US-Israeli military actions in Iran, first detected on February 28. The broadcasts, which start each transmission with "Tavajoh!" (meaning "Attention!" in Persian), feature numbers communicated in a slow and rhythmic fashion. This anomalous transmission has been identified as originating from a US military base in Böblingen, Germany, using specialized radio-location techniques.
The broadcasts occur twice daily on the frequency of 7910 kHz, mirroring the military operations aiming to disrupt Iranian infrastructure. The organization Priyom has tracked the signal using multilateration, pinpointing it to an area associated with a US Army unit nearby.
Despite discerning the likely location of the broadcast, the intention behind the numbers and the identity of the operator are still shrouded in mystery. The two-hour transmissions divide content into six segments, each opening with the same alert before transitioning into the numeric code. The emergence of radio jammers on the fifth day of the broadcasts suggests an attempt to disrupt them, leading the transmission to shift to another frequency shortly after.
These so-called "number stations" have roots in espionage, with utilization dating back to World War I, peaking during the Cold War. They serve as covert communication channels for intelligence agencies to relay encrypted messages to field agents, often in areas where other forms of communication are blocked or compromised. Each sequence is indecipherable without an appropriate codebook, further ensuring the secrecy of their contents.
Speculations abound regarding the broadcast’s purpose. One theory posits it may come from Iran as part of its counterintelligence efforts if more conventional communication were compromised. Alternatively, it might relate to operations by US or Israeli forces, or even Iranian opposition groups, aiming to relay information or confusion within Iran’s internal security apparatus.
Since the initial broadcasts, observed jamming attempts align with methods previously associated with the Iranian government, further complicating the puzzle surrounding these transmissions. As the geopolitical landscape evolves and with internet access experiencing significant restrictions in Iran, using shortwave radio may re-emerge as a vital method for discreet communications.
This era of conflict has reignited interest in number stations, a remnant of a bygone espionage era, highlighting their relevance even in modern warfare scenarios. As questions about the broadcasts persist, their timing and structure hint at an unfolding intelligence operation that may illuminate the current struggles in Iranian territory.
