SINCE early 1963, observations of ionospheric absorption have been conducted at three pairs of magnetically conjugate stations situated at high magnetic latitude. The positions of the stations are ...
No audio available for this content. The monitoring station in Brazil uses a Septentrio PolaRxS receiver to monitor the ionosphere, a Septentrio AsteRx3 to perform tests static and kinematic tests, ...
AN investigation is being made into ionospheric absorption, in which the instantaneous value of signal strength of a 9.15-Mc./s. radio wave at a distance of 788 km. from the emitter is recorded once a ...
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