u/tnsn2460

Last time I was try to do some HF antenna experiments with my rtl v4. I plugged the sdr into my PC, all of the the signals I've received are nearly just noises and interferences. there are barely signals.

Next time when I plug the sdr with my main antenna into my phone, the signals are pretty less. I searched up Google, it says the voltage may has dropped. I fixed it with bias tee.

After a week, I did the same thing again. The results are still the same.

After that, when I wanna get signals, I can't tighten the sma connector. The sdr is Weird now. And it seems like there are also some interferences that I haven't seen before.

Did the sdr broke? How can I fix it? Or I might just have to get a new one? I'm pretty worried about this.