Quote:
Originally Posted by Szczepan Bialek
"The first observations of cosmic radio emission were made by the American
engineer Karl G. Jansky in 1932, while studying thunderstorm radio
disturbances at a frequency of 20.5 MHz (14.6 m). He discovered radio
emission of unknown origin, which varied within a 24-hour period. Later he
identified the source of this radiation to be in the direction of the centre
of our Galaxy. From: http://encyclozine.com/science/astronomy/radio
I understand that the frequency "varied within a 24-hour period". It is the
"diurnal effect".
And what about the 365 days period (annual effect)?
S* |
The radio meteor reflections that the NLO and others are picking up are just that - reflections of what the distant transmitter is sending -
So if the distant transmitter is an FM broadcast station you will hear a brief burst of audio from that station.
If you are listening on an amateur radio band you will hear a brief exchange between two stations either in audio (SSB probably) or in Morse code (maybe high speed) or in a data transmission format.
No sounds of the universe, just ordinary radio sounds but over an unusually long distance and a little spooky cos of the doppler and ionization distortion.
depending upon the frequency in use and the 'strength' of the ionization caused by the meteor the duration of the reflection path can be long enough for a complete real time over-over QSO to take place where callsigns and signal strength reports can be exchanged between the two amateur radio stations. The 50MHz and 144MHz allocations are good places to listen for this.
November 7th 11, 11:49 AM
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