Why are internet connections to the same SDR different?
This may be a bit hard to explain so please bear with me.
Myself, my brother, and a friend all use a certain SDR when conditions are bad on 80 meters. My friend and I are closer to each other than my brother. We all get a slot on the SDR. I can hear my friend fine. My friend can hear me fine. My brother's signal doesn't make it to the SDR.
At times my brother, who is farther away, can hear me. At times he can hear my friend. At times he can hear both of us. Other times he can't hear either of us. Of course when I say fine I mean with a reasonable signal to noise ratio and can't hear means a poor signal to noise ration. Sometimes when I hear my friend fine, my brother cannot copy him at all. At the same time on the same SDR. We have experienced this on more than one SDR.
I find this very odd. How can a signal, which has already been received and digitized, be sent on the internet and arrive at two different locations with a different signal to noise ratio?
Does anyone have any thoughts?