Raspberry Pi Stack Exchange
Raspberry Pi Stack Exchange

Questions tagged [rtl-sdr]

14 questions
6
votes
2 answers

Raspberry Pi 3B+ freezes randomly

General setup My RPi is connected to a mouse, keyboard, and monitor. My swap size is set to 1000 MB and I'm not using wifi. Problem The RPi freezes randomly, meaning the GUI is frozen, no SSH connection is possible, and Magic + reisub doesn't work,…
Hemanti
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4
votes
3 answers

PiFm dBµV/m without an antenna

I have been wanting to tinker with the Raspberry PI to learn more about electromagnetic frequencies; however, before initiating anything, I read the legal debates regarding PiFm. It appears that both Industry Canada and FCC's regulations regarding…
Ethan
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2
votes
1 answer

Raspberry Pi 3 noise

I've noticed that my Raspberry Pi 3 is spewing much noise into my SDR radio which I listen remotely. As expected, any SDR on HF frequencies is very noise sensitive. Connected directed to a laptop the SDR radio gives much less noise. I guess the 5v…
João Fonseca
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2
votes
1 answer

Pi based Radio Telescopes?

I'm interested in building a Raspberry Pi based radio astronomy telescope. I'm not too set on any particular science objectives, but rather just want to get some experience with the full system, learn some about radio waves, and have some fun…
clifgray
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1
vote
0 answers

Radio frequency spectrum analyzer for Raspberry Pi

I am doing research for a new project and would like to poll the community for any advice. I want to build a spectrum analyzer on the Pi that will log frequencies and the power level they are at. I was looking at the SDR USB antenna on Adafruit, but…
sjo91190
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1
vote
0 answers

Any way to receive DAB radio on the Raspberry Pi?

I've been looking around and can't seem to find something where someone has got DAB radio working on the Raspberry Pi with an RTL-SDR. It seems possible, as the RTL-SDR is fully capable of receiving DAB, I just need to know if software exists to…
smithy212000
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1
vote
0 answers

Running Multiple RTL-SDR Applications using a Single Dongle

I want to run two applications in my Raspberry Pi (model B): Weather stellite tracking; Airplane tracking with dump1090. I have installed the RTL software and scripts from this tutorial for the weather satellite project and can confirm it is…
AW Exchanger
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0
votes
2 answers

How to Pipe RTL_FM audio out to minimodem in Rasberry Pi Strech?

I am trying to decode the data which is received through rtl_fm with rtl-sdr. I am using the below command rtl_fm -f 144.5e6 -s 200000 -r 48000 | aplay -r 48000 -c 1 -f S16_LE | minimodem --rx 1200 -A0 I am receiving the audio, but minimodem is not…
user3661448
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0
votes
0 answers

Raspberry Pi SDR Radio with aplay and minimodem not working

I am trying to receive data which is transmitted at 144.025 Mhz, using RTL-SDR with the below command and it works perfectly (even tested with local fm radio and the audio is good).. rtl_fm -f 144.025e6 -s 200000 -r 48000 - | aplay -r 48000 -f…
user3661448
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0
votes
0 answers

How to stream audio/video from Raspberry Pi to Windows PC

I have a Raspberry Pi 3b that I am using as a radio server with a rtl-sdr (Realtec Software Defined Radio). I would like to have any audio coming from the Raspberry Pi to be streamed to my windows 10 PC in another room, wired network. Possibly a SDR…
ComTech14
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0
votes
1 answer

how to run rtl_fm from a bash script

I'd like to know if it's possible to run rtl_fm from a .sh file: I know it's possible, but what I'd like to do is to run it, record for 5 seconds (I can place a sleep here) and stop the process (in the terminal, you need to do Crtl+C to do this). Or…
itd
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0
votes
2 answers

Able to play audio on CLI but not on VNC when headless

I have a Raspberry Pi 4 8GB that I'm looking to use for ham radio applications. In particular, I'm currently working with an rtl-sdr dongle for software-defined radio. Right now I'm just working with Raspberry Pi reference 2021-05-07. I don't have…
nerdenator
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0
votes
0 answers

"FILE...is not a Debian format archive"

EDIT: I downloaded a Debian package from debian.org website (via wget "ftp.us.debian.org/debian") however the package downloads as a text file and not *.deb on my Debian Buster. Why is that? I was ultimately able to install the package on my Debian…
Seth Shill
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-1
votes
1 answer

Development environment for RPico without USB

Goal: use a microprocessor (most likely RPi Pico, i.e. RP2040) for SDR analysis in combination with RTL2832U (typical rtl-sdr dongle) and output some information on a small LCD display (connected with SPI or I2C). Since the dongle is usually…
Alex
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