Cell Phone Jammers: A Convenience or a crime?

A cell phone jammer is a small device that looks like a walkie-talkie. It is used to prevent cell phones from receiving signals from base stations.

Cell phone jammers block cell phone operations by sending radio waves along the same frequencies that cellular phones use. The radio waves cause interference between the cell phone and its ability to communicate with cell phone towers.

Cell phone jammers come in a variety of sizes, can affect large or small radiuses, and can target a variety of cell phone bands (frequencies used to communicate with towers).

Jammers either disrupt phone-to-tower frequencies or tower-to-phone frequencies. The latter is typically more effective.

Cell phone jammers are illegal according to FCC regulations. The reason is because cell phone jammers could prohibit emergency vehicles from communicating with each other.

It can also disrupt police communication and jammers may prohibit someone from reaching emergency services if they're used incorrectly.

ITU Implores Iran To Stop Jamming EutelSat

The global regulator of satellite orbital slot and broadcast frequencies asked Iran to track down the source of intentional jamming of Eutelsat satellite signals that carry news broadcasts into Iran.

In a delicately worded statement apparently designed not to antagonize Iranian authorities, the Geneva-based International Telecommunication Union (ITU) said it accepted the findings of the French National Frequencies Agency concluding that the interference to Eutelsat signals, particularly those from the BBC reporting on Iranian politics, is coming from Iranian territory.

The French agency, on behalf of Paris-based Eutelsat, has written to Iran on multiple occasions in the past year asking that the interference cease. The ITU Radio Regulations Board also contacted Iran, whose administration responded that it did not know the source of the signal jamming, which has interfered with broadcasts from Eutelsat satellites located at four different orbital slots.

The BBC has moved its BBC Persian news broadcasts from one satellite to another in an attempt to find an orbital slot that permits broadcasts into Iran but makes it difficult for Iran-based jammers to interfere with the signal.

The ITU’s Radio Regulations Board concluded that “the interfering signals appear to be of a nature” that is forbidden under ITU rules and is originating in Iran “based on the measurements provided by the administration of France, and having confidence in the measurement techniques.”

The ITU, a United Nations affiliate, has little power to enforce its rulings. It depends on member nations to respect the regulations as a matter of good faith in the general interest of maximizing the use of the radio spectrum and satellite orbital positions.

The ITU said it “urged the administration of Iran to continue its effort in locating the source of interference and to eliminate it as a matter of the highest priority.” It said it has asked the French administration and its own Radiocommunication Bureau “to assist the administration of Iran in identifying the source of the interference.”

Eutelsat has been telling French authorities for months about the interference, and the 27-nation European Union has urged Iran to stop it.