[amsat-bb] DopplerPSK

[Phil Karn]

On 6/19/19 13:55, Pedro Converso wrote:
> Hello Phil,
>
> Nice application for SDR !
>
> You can also use for check these satellites that emit continuous carrier.
>
> http://amsat.org.ar/pass?satx=lo-19,co-55
>
> 73, lu7abf, Pedro


Seemed like a natural to me, since radios never tune cleanly.

The question about the satellites is how stable those carriers really
are. Doing this right requires a 2-way coherent Doppler transponder on
the spacecraft. We really should fly one.

Phil