[amsat-bb] NOAA Weather Satellite receiver

[jkelly]

I believe the bandwidth is less - but due to doppler they spec a 40khz 
bandpass so
the 34khz signal can slide within the 40khz receiver.

This link might be helpful:

http://en.wikipedia.org/wiki/Automatic_Picture_Transmission

Jeff
K2SDR

http://wx.k2sdr.com



On 12/5/2014 4:34, Rupesh Lad wrote:
> Hello all;
>
> I am an undergraduate Engineering student and a SWL. I have tracked many
> Amateur satellites from COEP Ground station, VU2COE.
>
> I want to Home brew a NOAA satellite image receiver as my academic project.
> I will be using WXtoImg to decode the image transmitted by NOAA satellite
> on APT frequency. So the task for me is to get the audio frequency output.
>
> Literature says that NOAA satellites transmit a signal of 40 kHz bandwidth.
> I have also observed the spectrum on Spectrum analyzer using my antenna.
> Want to know whether this is only RF bandwidth? and if it is so, then what
> is IF bandwidth of such signals?
>
> Can anyone help us in designing the receiver?
>
>