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Creating a DIY 88-108 MHz FM Trap
One of the most problematic strong signals you can encounter is regular 88 – 108 MHz broadcast FM stations. They transmit at high power and can cause overloading and intermodulation problems on simple...
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Building a Ham Transceiver with an RTL-SDR, Raspberry Pi and Rpitx
A few days ago we posted about RpiTx, a piece of software that allows you to turn your Raspberry Pi into a multi purpose transmitter by modulating the output on one of the GPIO pins. Now over on...
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Spektrum: New RTL-SDR Spectrum Analyzer Software
Recently a reader of RTL-SDR.com, Pavel wrote in to let us know about a new program called “Spektrum” which he has written. Spektrum runs on Windows and Linux and turns an RTL-SDR dongle into a...
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Improving Reception with the Stock RTL-SDR Antenna by Building a Corner...
Last week a reader of RTL-SDR.com wrote into us to let us know about some experiments that he had been performing with the telescopic stock antennas provided in our RTL-SDR dongle packages. The reader...
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A modified dump1090 with ADS-B Heatmap and Range Alititude View
Dump1090 is one of the most popular ADS-B decoders that is used together with the RTL-SDR dongle. ADS-B stands for Automatic Dependant Surveillance Broadcast and is a system used by aircraft that...
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Watching ATSC TV with an SDRplay SDR and GNU Radio
ATSC is the digital HD TV standard used within the United States and Canada. It is 6 MHz wide so the RTL-SDR with its maximum bandwidth of about 2.8 MHz cannot decode this signal. However, higher end...
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Meteor M-N1 Satellite Wakes up from the Dead
RTL-SDR.com reader Happysat recently wrote in with some news. A few days ago a weather satellite image decoding enthusiast from Argentina was waiting for a pass of the Russian Meteor M-N2 satellite...
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An RTL-SDR Based Smartwatch for Detecting Objects Touched by the Wearer
Disney Research have just released a paper describing an RTL-SDR based smart watch that they’ve developed a proof of concept for. The smart watch is unique in that it can be used to actually detect the...
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Using an RTL-SDR and Broadcast FM Radio RDS Signals to improve WiFi Networking
The performance of WiFi networks can depend heavily on how crowded the WiFi channels are in your area. For example when your neighbours start streaming a movie over their own separate WiFi network, it...
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Using the GPIO Ports on the RTL2832U Chip
The RTL-SDR uses the RTL2832U chip as its ADC and USB interface processing chip. It also has 8 GPIO (General Purpose IO) ports available which are by default unused by the original DVB-T dongle...
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SpyVerter Upconverter now for sale
The team behind the Airspy software defined radio (as well has the popular SDR# software package) have just released the SpyVerter upconverter for sale. Upconverters shift HF frequencies (0 – 30 MHz)...
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SDR Presentations Requested for FOSDEM
The Free and Open Source Developers Meeting (FOSDEM) is looking for SDR presentations to give at this years conference in Brussels, Belgium which will be held on January the 80th & 31st of January....
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Raspberry Pi Docker Images for ADS-B and ACARS with the RTL-SDR
Docker is a Linux based platform which allows you to build and deploy complex applications into a self contained “container” package that contains all the needed applications and dependencies. The...
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ARM Radio: A Cheap SDR built out of an ARM Processor and not much more
A software defined radio can theoretically be made out of little more than a microprocessor with an onboard ADC and some DSP code. This is exactly what Alberto di Bene (I2PHD) achieved by connecting an...
View ArticleUsing the RTL-SDR as a Panadapter for a Kenwood TS-570D
Over on YouTube user SA6 HAM has uploaded a video showing how to modify a Kenwood TS-570D so that an RTL-SDR dongle can be connected to its first IF stage in order to create a low cost panadapter. A...
View ArticleHak5: Reverse Engineering Radio Protocols with SDR and the Yardstick One
Over on YouTube the popular security and hacking themed channel Hak5 have created two videos together with Mike Ossmann (creator of the HackRF and Yardstick One) that give a good introduction and...
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New Mini RTL-SDR Dongle Available from Nooelec
The Nooelec store have recently come out with a new small RTL-SDR model called the Nano 2, which appears to an improved version of the old tiny square dongles. These new ones are sized at 24mm x 21mm x...
View Articlertl_power_fftw: An improved version of rtl_power designed for radio astronomy
As the RTL-SDR’s maximum usable bandwidth is about 2.8 MHz, programs like rtl_power were written to scan over wider bandwidths by quickly hopping between different swaths of the frequency spectrum and...
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An online Software Defined Radio training course
We’ve recently found what looks to be a new online video based course that uses the RTL-SDR to teach basic software defined radio topics. The course is not free, but costs only $1.99 and the first...
View ArticleSoftware defined radio talks from Defcon 23
Defcon is a yearly conference that focuses on computer security and hacking talks. In recent years they have included a “Wireless Village” section that includes talks about all things wireless. This...
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