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But some smaller particles survive and this little stuff or dust can be used for radiocommunication.The trails after such a particle can reflect radiosignals but, because the trails usually are very short the duration of the time is very short. We use special highspeedkeyers; the speed goes up to 3000 LPM. A higher speed is not unusual today and, to record, we use taperecorder or DTR to reduce the speed to a more comfortable speed for the ear. It is possible to overcome distances up to 2000 km ++, if the signals have nothing to reflect to or bounce then, the signals will go straight away out to the universe or to other civilisations may be ! That is for 144 Mhz and higher.
Last motified on 98-07-27 12:52:08 (Montreal time, canada) Created by P. Bolduc © July, 1998
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