RTLSDR

224 readers

4 users here now

A subreddit for the low-cost software defined radio (SDR) community. While originally dedicated to the [RTL2832U USB rtl-sdr project, relevant content related to general SDR, RF, and similar projects are also welcomed.

Related communities:

founded 2 years ago

MODERATORS

[email protected]

Using a Nooelec SmarTee and getting these periodic wide band dips in signal strength (blue bars). I assume it's something wrong with my SDR. Is that a power issue or something? (lemmy.world)

submitted 10 months ago by ch00f to c/[email protected]

14 comments fedilink hide all child comments

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 1 points 10 months ago

The USB3 won't make a difference. It's actually a hardware issue with the rtl2832u in the SDR that causes the drop. I'm not sure why one controller is OK, but that's what I've heard.

I'll be honest that I don't really understand why oversampling helps. But as far as I know it only increases the dynamic range, and if you don't have a large difference between the weakest and strongest signals you are receiving there isn't any benefit. And also, yeah, the environmental noise is probably way higher that the ADC noise.

If you've been a ham for 9 years, you probably know more about this than me. I've been into radio/SDR for about 1.5 years now, and I've mostly just done satellite stuff in that time.