I'm trying to find a way to decode and listen to (unencrypted) TETRA systems on windows and I've been tearing my hair out for the past few hours because all I can find are dead links to poorly documented projects.

Hello everyone,

I have been messing around with the Raspberry NOAA image for automatically recording and decoding satellite data from NOAA and Meteor satellites.

I have published the website and would be interested to know your thoughts.

I live in South Africa so the images are of the lower part of Africa.

I have recently needed to replace my old Raspberry Pi due to a hardware failure so that's why there are days missing from the captures.

https://sa-weather.com:8443/

Thanks!

Hi, I am a newbie in this radio world. I have a fan that operates under the 303.941 freq and I need to decode the signal in order to send information to Home Assistant using my CC101 antenna and control it. I already bought the RTL-SDR v4. Can anybody point me on which antenna should I buy for this range of frequency?

Thanks

As my title reads, I'm considering buying a RTLSDR setup for my son for Christmas. I have absolutely zero clue or experience with it. I have seen a couple brands/types on Amazon and I'm unsure what's the best setup to buy. I know I was told I could get a "package deal" or whatever you would call it with the device, antenna, and what not.

It appears it doesn't much make a difference what is being monitored, but just in case, the area is the Colorado DTRS statewide system, phase I , specifically 800mhz.

Could anyone help me out and provide a Link to Amazon, or anywhere with the correct RTLSDR setup, please.

Thanks in advance for any and all help.

Hi,
I am trying to get the following project going to decode a flood warning ALERT Protocol using an RTL-SDR. GitHub - cparker/udfc-node: Node.js code for filtering data gathered from nearby weather stations into JSON - SignalsEverywhere: Investigating USGS Gaging Stations and their GOES Satellite Connection
I was wondering if anyone has experience with Minimodem and the RTL-SDR and could help me with the decoding. I have got it to a point where I can see data, but it is decoding incorrectly.

Just idle curiosity. What is this circled here? Some FM radio stations have "shoulders" on either side of their crest. What is that about? Might be a coincidence, but I've found it most reliable around local public radio stations. This is a RtlSDR blog V4 dongle with Airspy SDR#.

https://preview.redd.it/bh44jzsrwj4e1.png?width=251&format=png&auto=webp&s=5445c162a8d8d78094161d9ed3c1a202c03663d6

I’m setting up a lora transmitter and receiver on raspberry pi 2 W and having some serious issues.

Right now I’m trying to test a stable receiver by using an RTL-SDR with SDRangel and chripychat on windows to try and at least decode a saved signal (in order to then debug my transmitter)

Does anyone have any saved valid lora audio transmissions / know where some are for loading into SDRangel? Anyone done the same themselves?

Thanks!

Hi everyone,

Environment: • OS: Windows 10/11 with WSL (Ubuntu) • Python version: 3.12.3 • pyrtlsdr version: 0.3.0 • Other dependencies: scipy, numpy, matplotlib

Description: I am facing an issue when trying to use the pyrtlsdr library in a Python virtual environment on WSL (Ubuntu). Despite installing the library and its dependencies, I am unable to import pyrtlsdr in my Python script. I have followed the steps below to troubleshoot the problem, but the issue persists.

Steps Taken: 1. Created a new Python virtual environment (python3.10 -m venv myenv). 2. Installed the necessary libraries using pip install pyrtlsdr matplotlib numpy scipy. 3. Verified the installation with pip show pyrtlsdr (it is correctly installed in /home/paul/myenv/lib/python3.12/site-packages). 4. Verified the Python version and ensured it’s pointing to the virtual environment: python3 --version shows Python 3.12.3. All advice welcome Thanks

I thought I could be immune from this kind of overload because I don't live in Europe or the coastal U.S or anywhere near the ocean where most people are.

I heard a shortwave transmission in the 3000s khz and 4000 khz . These bands are not known to have shortwave stations on them besides time signals like CHU. I don't have any overload from medium-wave broadcast stations. SDRconnect has an option to apply an rf filter and no difference was noted with or without the filter.

Some background on my antenna: I use a weirdly positioned antenna that is supposed to be vertical that is tuned with a capacitor for somewhere around 6 Mhz with ~18 radials. It receives faintly starting from 570 khz but really starts to ramp up sensitivity at ~1500khz. The noise floor sharply drops at about 16 Mhz though it is still possible to pick up weak FM stations in the FM BCB.

Hello to you all,

I'm faced with a challenge that a friend has given me. I need to find the date the image was taken and the satellite that took it. I've done a lot of research and I know that the satellite is normally NOAA-19. However, I'm having trouble finding the date. To do this, I'd need to know the exact date on which the satellite passed over my location, and then look at the weather archives to find the date. Would you know how I could find out the exact date by knowing the trajectory shown on the image?

Many thanks for your help

Title pretty much says it all, i ran into multiple errors from missing lib files IT SHOULD INCLUDE while installing to it not being able to access the rtl-sdr-v4 once setup is finished, the owner does not include information ond river setups and i cant find info on how to setup my rtl-sdr-v4 drivers in linux.

additional errors i experience if anybodies curious:
rtlsdr_demod_write_reg failed with -9

r82xx_write: i2c wr failed=-9 reg=17 len=1

r82xx_set_freq: failed=-9

[02/12/2024 09:07:23.000] [ERROR] Module 'usrp_source' doesn't exist

[02/12/2024 09:07:23.000] [ERROR] Module 'sdrplay_source' doesn't exist

[02/12/2024 09:07:22.000] [ERROR] Module 'rfnm_source' doesn't exist

[02/12/2024 09:07:21.000] [ERROR] Module 'perseus_source' doesn't exist

[02/12/2024 09:07:21.000] [ERROR] Module 'harogic_source' doesn't exist

[02/12/2024 09:07:21.000] [ERROR] Module 'fobossdr_source' doesn't exist

[02/12/2024 09:07:21.000] [ERROR] Could not list devices -7

[02/12/2024 09:07:21.000] [ERROR] Couldn't load /usr/lib/sdrpp/plugins/fobossdr_source.so: libfobos.so: cannot open shared object file: No such file or directory

Hello everyone, I am trying to get some data threw my nooElec RTL2832U from my weather station. I had i Acurite that i was able to get the data, send it to mqtt and import it in home assistant. Since a changed my station, now an ambient weather 2902 who needs a replacement too, i am looking for the davis vue. I'd like to get the data from my vantage vue with my RTL too but when i tested it with ambient weather in the past, no data was seeing. Is there someone who was able to do it?

Thanks!

Can anybody recommend me a VNA for 2.4 GHz and lower?

I'm looking at the cheap NanoVNA but I'm not sure if I can trust the lowest price Aliexpress sellers?

Currently running goes recv on a raspberry Pi. Getting around 1450-1500 vit avg. I've been aiming and re-aiming for the better part of a week, changed config file, adjusted secondary antenna reflector, kind of everything I've been able to find to reduce. Current gain in config is 5 and sample rate is 2 mhz. Any tips or niche elements I could have overlooked? Setup is as follows (respectively):

• 2.4 GHz 24dbi grid antenna
• N type to SMA
• SAWbird
• 2 inch SMA jumper
• NESDR SMArTee XTR (bias tee always on, SAW bird IS getting powered as indicated by LED)
• Rasberry Pi 3 B

So I was thinking about how the mesh community has basically created their own network and was wondering:

Could someone eventually modify it to create their own data network? Like a second internet that's community run and owned, and people host their own sites (like the internet before enshittification)

If so, I think that's the future

EDIT: I don’t mean just LoRa, I mean any kind of way, but in the same style as localized setup relays etc

I am new to this so please excuse the dumb question. Can I take a set of TV rabbit ears and attach the center lead of the coax to one of the antenna and the shielding cable to the other for a dipole antenna for my SDR? Or is there more to it?

Thanks

One of the last questions I have regarding SDRs (this has all been not for lack of understanding, but more from the hacker mentality of "can I make it do it").

Can someone give use case examples of why you'd want a $30 SDR vs the Hackrf One (besides the obvious of cost or transmit vs receive only)

From a tech standpoint I would generally try to go for the better product even through I wouldn't use all the features. But in this case, I am more trying to understand what kind of projects require which device.

As a quick and dirty example: NOAA Satellite images can be received on either device.? HAM radio can be received on both but only Hackrf One can transmit (see above about understanding the transmit limitation already).?

I understand from previous posts that the SDRs lack the video decryption chips to make real-time video playback possible. But I would assume audio only is a relatively easy thing, but what else is possible?

I have a rtl-sdr V4 with the kit (https://www.rtl-sdr.com/using-our-new-dipole-antenna-kit/), using GQRX or CubicSDR. There's a known radio station at my area at 104.1MHz but I could see it at 57MHz, but a device transmitting at 433MHz I could see roughly around 433MHz. According to ppm, the offset increases with the frequency, but it's not my case. Is just my device sdr bad?

Not sure if it’s possible or not, but, I would like to have my own map tiles/ saved maps overlay as the default map and adsb map, ais map, ect. Or can someone recommend a better way of doing this. I currently can receive adsb, ais, aprs, and so on, which all plot on their own maps. I am looking for a way to compile them all in one mapping system for convenience. I was trying photon map, but could not get the receivers to connect. At this point sdr angel seems more convenient, if I could have offline maps. 🗺️

I want to view a map of ADS-B signals received on my RTL-SDR when offline. I have Dump1090 working (I see active data), and when I'm online I can use Virtual Radar Server to plot the planes. I used to have ADSBScope working to show plotted aircraft when offline, but I haven't used it in a while, and now I can't get it to work, although I never changed any of the settings. If I hit "Select COM Port" none show up. Nothing happens when I hit the START RAW DATA CLIENT button. Here's my settings:

https://preview.redd.it/q92t6e1pov3e1.png?width=462&format=png&auto=webp&s=cca223958b6e90cdebbf9bf94392852974816818

(I also tried BEAST).

What am I missing? Thanks for any assistance y'all can provide!

Hello I have an omega dvb-t t900 to watch tv from my pc, I lost the cd with the drivers and software. I searched online but I couldn’t find any drivers. The device is not recognised if I don’t have the drivers

There are multiple variants of the ATS25 radio, max, decoder, amp, decoder II, etc. Some have different firmwares and others are 'official' and 'unofficial'. It looks like you need a license to update firmware. Does this mean 'official' is licensed?

What should I look for and what should I avoid?

What is a reputable and reasonably priced place to purchase?

SOLVED

I have SDR# setup and it works perfectly fine with that, but URH isn't detecting my RTLSDR. I've basically gone through everything and I'm unsure what to do next?

I'm on Windows by the way, there is a github thread but it seems they're using linux (or mac I'm not sure)

EDIT: Solution. So this entire time I was trying to install it via the cmd, failing to realize there is literally a windows automated installer/exe. Using the exe immediately solved my issue, I am hyper-autist.

EDIT 2: Ok so while that allowed me to select RTLSDR, it still isn't detecting that it's available and connected

EDIT FUCKING 3: OK SO I ACCIDENTLY UNINSTALLED THE DRIVERS WHILE I WAS CLEARING THE OLD URH FILES. (Don't ask me how I managed to do that) Reinstalled using Zadig and it works for SDR# again. But it still isn't showing up for URH.

I was trying to listen to 3215 WWCR last night and to play this, I had to tune to 3220 to get the station. I checked my ham radio and the station was on 3215. Is this a known issue with windows 11 pro / SDR# maybe?

This seems to happen on a lot of frequencies and would like to solve this. Not so nice for hunting signals if I am not getting a accurate picture of what is going on.

Thanks for the help!