4 ms·
Cell modems are pretty amazing. One time I wanted to simulate losing reception on one, so I removed the antenna. It still worked, so I added a 50 ohm terminatio
by sgtnoodle 4y ago
Cell modems are pretty amazing. One time I wanted to simulate losing reception on one, so I removed the antenna. It still worked, so I added a 50 ohm termination. It still worked. I finally got it to disconnect by putting it all inside an anti-static bag.
- denysvitali 4y agoAre they? I remember disconneting the antennas of some of my devices for repair purposes and getting no reception at all (not even for emergency calls). Maybe things changed in the last few years
- sgtnoodle 4y agoMany radios have more margin on the signal once "connected". I vaguely recall that cell modems in particular need to do an initial registration with the network. That registration is probably at a fairly ancient modulation, without the benefit of the cell tower knowing where the modem is to beam form to it. It seems like that could account for 10's of dB of difference.