[BC] Satellite sensitivity...

[Ron Cole]

The emergency systems are designed completely different and conventional
communications satellites.

Oh and 121.5 / 243 Mhz is being phased out, 406 is the new emergency
frequency..
Monitoring of 121.5 is set to end on 2/1/2009.
www.sarsat.*noaa*.gov/121phaseout.pdf



Ron

On 2/16/06, WFIFeng at aol.com <WFIFeng at aol.com> wrote:
>
> In a message dated 02/16/2006 10:49:22 AM Eastern Standard Time,
> Towers at mre.com writes:
>
> > Think about it, a 3.8M
> >  dish with 40dB of gain has a power gain multiplication of 10,000.  Put
> 100
> >  watts into the feed point and you have a 1MW ERP emission.  5 meter
> dishes
> >  is easily 5MW when driven with 200 watts.
> >
>
> So then how do these sats receive the 121.5 Mhz signals coming from
> milliwatt
> transmitters with whip antennas? That is pretty amazing, IMHO.
>
> Willie...
>
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