Recent content by apmsj

Ok I think I understand now, thank you!

Thanks for the reply! So when the cell phone reports that it has -90dbm, it means that P = 10^(1/10(-90-30))= 10^-12 W is available at the antennae? I thought that negative numbers in db represented a loss, and positive numbers represented a gain. So when we calculate dbm is the reason why...

I'm trying to learn more about how cell phones operate. Right now I don't understand the power involved in the signal between the cell site and mobile phone. I've read that the average cell phone has a signal strength that ranges in between -80dBm and -120dBm. I've also read that cell phones...