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El bien es mayoria, pero no se nota porque es silencioso. Una bomba hace mas ruido que una caricia pero por cada bomba que destruye hay millones de caricias que alimentan la vida . . . . . . . . . .. . . .. . Facundo Cabral . . . . . . . . . . . . . . . . . . . "El mundo no está en peligro por las malas personas sino por aquellas que permiten la maldad"
Solar X-rays: Geomagnetic Field: |
flujo solar indica el nivel de ionización y afecta a la propagación en frecuencias superiores a 10MHz. El flujo solar no afecta a las bandas de 40m e inferiores, ya que la MUF raramente cae por debajo de 10MHz. Este es el porque de que las bandas bajas siempre están abiertas.
índice A es un promediado del índice K e indica las condiciones geomagnéticas de las últimas 24 horas.índice K indica el estado geomagnético de la tierra, e indica también el ruido de HF por debajo de los 10MHz, excepto en casos severos. Durante una tormenta, el que haya niveles altos de ruido en 40m no significa que haya ruido alto en 20m.
Natural variations in the geomagnetic field classified quantitatively into quiet, unsettled, active, and geomagnetic storm levels according to the observed a index:
quiet | 0 - 7 |
unsettled | 8 - 15 |
active | 16 - 29 |
minor storm | 30 - 49 |
major storm | 50 - 99 |
severe storm | 100 - 400 |
Active: the Geomagnetic Field has been unsettled (Kp=4) |
Storm: A Geomagnetic Storm has occurred (Kp>4) |
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