SDS100/SDS200: NOISE indicator

[N6ML]

Depends on whether you have NFM, FM, etc selected.

I wasn't asking about the width of the AF signal fed to the P25 decoder. I was asking about the RF sampled at the I/Q level. One of the neat things that SDRs can do is sample a swathe of RF and implement multiple "virtual receivers" within a wider window....

 

[Ubbe]

Adding one virtual receiver would probably make the SDS100 CPU go into metal melting temperatures, if the computing power where available.

/Ubbe

 

[N6ML]

Adding one virtual receiver would probably make the SDS100 CPU go into metal melting temperatures, if the computing power where available.

That's based on an assumption that the heat is coming from a busy CPU. RTL2832U SDRs run really hot too, and it has nothing to do with CPU consumption.

It's also a bit orthogonal - the point for this thread was that the RF sample bandwidth may be greater than the AF bandwidth. Paul mentioned that the noise figure pertains to the AF though, so it's a mostly moot now.