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Que es el "modo" en los satélites?

El término modo de los satélites es uno de los que hacen parecer complicada esta área de la radioexperimentación. En HF el modo es el tipo de emisión en el que trabajamos: SSB, FM, CW, etc. En satélite el modo significa las bandas que estoy utilizando para trabajar al satélite: que banda uso en el uplink, esto es para transmitir o subir al satélite y el downlink o la banda en la que el satélite transmite de regreso o baja y en la que nosotros recibimos.

http://www.vozip.net

        Modo    Uplink                  Downlink
	----------------------------------------------------
        A       2 metros (145 MHz)      10 metros (29 MHz)
        B       70 cm. (435 MHz)        2 metros  (145 MHz)
        J       2 metros (145 MHz)      70 cm. (435 MHz)
        K       15 metros (21.2 MHz)    10 metros (29 MHz)
        L       23 cm. (1.2 GHz)        70 cm. (435 MHz)
        S       70 cm. (435 MHz)        13 cm. (2.4 GHz)
        T       15 metros (21.2 MHz)    2 metros (145 MHz)
	----------------------------------------------------

15. ¿Cuando hay modos de dos letras?

En algunas ocasiones vemos modos de dos letras como JA y JD en este caso se refiere a modo J Analógico o modo J Digital. En otras vemos que el satélite trabaja en modo compuesto, por ejemplo KA esto significa que se puede subir en 15 metros o en 2 metros y ambos bajan en 10 metros. En los futuros satélites se prevén nuevos modos.

16. ¿Cual es la potencia que requiero para trabajar satélites?

Los satélites no requieren de grandes potencias, por el contrario mucho de ellos se bloquean o bajan su potencia de downlink como aviso de que se están protegiendo. Si se tiene antenas direccionales un amplificador de 100 watts esta en el límite máximo de lo decente.

 

17. ¿Cuales son los mas fáciles de escuchar/trabajar y sus frecuencias?

Satélite        Descripción     Uplink MHz              Downlink MHz
----------------------------------------------------------------------------
MIR             FM y packet     145.550	                145.550
----------------------------------------------------------------------------
STS             FM              144.910                 145.550
                                144.930
                                144.950*
                                144.970
                                144.990
                Packet          144.490                 145.550
----------------------------------------------------------------------------
RS-10/11        DX              145.890 USB             29.390 USB
                Modo A          145.860 a 145.900       29.360 a 29.400
                Robot           145.820                 29.403 
                Beacon                                  29.357 y 29.403
----------------------------------------------------------------------------
RS-12/13        DX              21.240 USB              29.440 USB
                Modo K          21.210 a 21.250         29.410 a 29.450
                Robot           21.129 CW               29.454 CW
                Beacon                                  29.408 y 29.454
----------------------------------------------------------------------------
UO-11           FM y packet                             145.825
----------------------------------------------------------------------------
DO-17           FM y packet                             145.825
----------------------------------------------------------------------------
AO-27           Modo J - FM     145.850 +/- .010        436.800 +/- .010
----------------------------------------------------------------------------
 

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