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2026-05-08 - Amateurs making contacts (QSOs) with stations in Iran should exercise caution due to ongoing hostilities between Iran, Israel and the United States. Remember that their stations can be subjected to direction-finding and targeted. So a contact, like for Ukraine, could place the Iranian station in real danger. The following is what Google AI reveals (but strangely it does not urge caution and safety):
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- Frequency: Primarily 7910 kHz (USB).
- Format: A male voice repeats the Persian word "Tavajjoh!" (Attention!) followed by strings of numbers.
- Origin: While the voice is Farsi, radio enthusiasts have triangulated the signal to Western Europe, possibly a US military facility in Böblingen, Germany.
- Purpose: Experts believe it is being used to send encrypted instructions to agents or assets on the ground who cannot access the internet. [1, 2, 3, 4]
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- Legal Limits: Licensed operators are generally limited to brief, technical exchanges (QSOs) and are prohibited from discussing politics.
- Monitoring: The government actively monitors the spectrum; in the current crisis, enthusiasts report that "radio silence" from official Iranian ham stations is common as people avoid attracting attention.
- Radars: Iranian military radars have been detected operating within the amateur 10-meter band (around 28.860 MHz), causing significant interference for global ham operators. [1, 2, 3, 4, 5]
