I bought a NESDR Mini 2+ and I want to listen to AIS, ADS-B, ATC and PMR-446, and make a device (Using a Raspberry Pi 5 4GB) that will basically always work and have buttons on the GPIO pins that control the functions of it. But what is the best software for these frequencies, and will I need any bugger antenna than the stock one? Is there anything I should be carefull about when making it, or any suggestions? Im in Greece btw if it helps with the frequencies (if they are covered bt the NESDR)

Hello guys, did anyone ever managed to install gr-iridium / iridium-toolkit on a windows machine. I've been trying for the last 6h and it has huge dependancy issues, and the github does not recommend windows, so just to know, since I don't have a dual boot laptop, only WIndows. Thanks !

Hi everyone,

I have an RTL-SDR Blog V4, and I'm worried that I may have permanently damaged it.

On several different occasions, I transmitted with a handheld amateur radio (around 5 W) while the RTL-SDR was connected to its stock antenna. During each transmission, the SDR waterfall lit up across almost the entire spectrum due to overload.

Afterward, I was still able to receive:

- FM broadcast radio normally

- Local amateur radio repeaters without any obvious issues

However, I have never successfully received weather satellite data (NOAA in the past or Meteor). At the time I assumed it was due to my setup, but now I'm wondering whether I may have reduced the SDR's sensitivity by transmitting so close to it.

My questions are:

1. Is a 5 W handheld transmitting near an RTL-SDR Blog V4 enough to permanently damage its front end?

2. Since it still receives FM broadcast stations and amateur repeaters normally, is that a good indication that the SDR is probably fine?

3. Is there any practical way (without lab equipment) to check whether it has suffered a slight loss in sensitivity?

I'd appreciate any technical insight from people with RF or RTL-SDR experience. Thanks.

hello, sorry if this is a long post. I have been working on making an antenna to record imagining from the goes-19 satalight for some time now and I'm kinda stuck. My waterfall just has basically nothing and I'm not sure what to do. I'm gonna put a bunch of photos of my antenna as well as my data and satdump information. I have 2 things that i think could be the issue but I'm not sure. When originally building it i was very new and then ground plate i had machined i put the connector in the middle so now i have to have a wire jump from the end of the coil to the connector, also my ground plate's diameter is about 5mm too small. Could either of those be the issue? Could it be something i have to do on satdump?

I'm working on an RF localization project for a large stage/event area and would appreciate some advice from people with practical experience.

The idea is to install at least four antennas, one at each corner of the area, connected to a KrakenSDR system, with a possible fifth antenna placed in front of the stage if needed.

My question is this:

I understand that the KrakenSDR is primarily designed for direction finding (bearing estimation) of external transmitters. However, is it also possible to use it to locate transmitters that are inside the monitored area by combining measurements from the different antennas and triangulating or multilaterating their position?

As an example, if the monitored area is approximately 20 × 10 meters, could a KrakenSDR with a five-antenna array realistically estimate the position of a transmitter within that area with useful accuracy? Or is this beyond the capabilities of the hardware and intended processing, making it impractical?

I'm particularly interested in hearing from anyone who has attempted indoor or small-area localization using KrakenSDR or similar SDR-based direction-finding systems.

Thanks in advance for any insights or real-world experience.

SDR++ first try on debian 13 trixie with v4 dipole antenna.