Hello ED and al
Any idea on what kind of TX power is being used for the weather satellites?
In case of NOAA POES - APT trasmision:
" ...The signal itself is a 256-level amplitude modulatedhttp://en.wikipedia.org/wiki/Amplitude_modulated2400 Hz http://en.wikipedia.org/wiki/Hz subcarrierhttp://en.wikipedia.org/wiki/Subcarrier, which is then frequency modulatedhttp://en.wikipedia.org/wiki/Frequency_modulatedonto the 137MHz-band RF carrier http://en.wikipedia.org/wiki/Carrier_wave. Maximum subcarrier modulation is 87% (±5%), and overall RF bandwidth is 34KHz. On NOAA POES vehicles, the signal is broadcast at approximately 40dBmhttp://en.wikipedia.org/wiki/DBm(10 watts) effective radiated power http://en.wikipedia.org/wiki/Effective_radiated_power."
Source: http://en.wikipedia.org/wiki/Automatic_Picture_Transmission
Vy! 73 de Artur SP5QA