The JRCUC has reported there may be a problem associated with operating mobile telephones in the close proximity of programmable transmitters causing the memories to be partly or fully erased. This problem has yet to be scientifically substantiated; however, it is generally known that RF radiation can disable or permanently damage some modern electronic devices.
Although the risk may be small, we believe it should be minimised by bringing it to the attention of members and clubs. Pending resolution, we recommend that mobile telephones are not switched on within 10 feet of any programmable transmitter. This may appear to be overkill, but better safe than sorry. Care should be taken during pre-flight checks to ensure that all controls are operating fully and in their correct sense and to ensure that the memory has not been affected by any undetected or unknown transmissions since the last flight.