Building a 145 MHz Low Loss Helical Bandpass Filter
Over on YouTube user Mile Kokotov has uploaded a video showing his home made low loss helical bandpass filter for 145 MHz, but also tunable from 110 MHz to 160 MHz. Bandpass filters are useful for the...
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Tutorial on using Modesdeco2 for ADS-B with the RTL-SDR
Over on the SonicGoose.com blog, the author has recently created a tutorial showing how to use Modesdeco which is a multi platform command line ADS-B decoding software application. ADS-B stands for...
View ArticleSetting up the Linrad waterfall with high sensitivity for weak signals
Leif, the programmer of Linrad has uploaded a video on YouTube showing how to set up it’s waterfall for very high sensitivity reception of extremely weak signals. Linrad is an SDR GUI receiver software...
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New ADS-B Android App for North America
Previously we posted about Android programmer Tosis Nikolaos’s last app which was called “Track your flight Europe”. The app allows you to view aircraft tracked via ADS-B received by an RTL-SDR on an...
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OpenWebRX: An Multi-User RTL-SDR Receiver with Web Interface
From Reddit we’ve learned of a new web based SDR receiver software for the RTL-SDR called OpenWebRX. This python based software allows you to run a web server that allows multiple users to connect to...
View ArticleBigWhoop now a finalist in the NASA Global People’s Choice Award
Previously we posted about BigWhoop which is a project entry into the NASA International Space Apps Challenge. The BigWhoop team aim to create a networked system where RTL-SDR’s are used around the...
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Reverse Engineering a Radio Weather Station with an RTL-SDR
On his blog Josef Gajdysek has posted about his experience with using an RTL-SDR to reverse engineer the radio protocol used by his home weather station. Josef’s weather station is an ISM band device...
View ArticleA 1961 Drake 2B Receiver using an RTL-SDR as a Panadapter
The Drake 2B is an old analogue tube based radio from 1961. Although it is so old it is still considered a decent shortwave receiver. Over on YouTube user M0HBR decided to bring his Drake into the...
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New Version of Digital Speech Decoder DSD+ 1.071 Released
The latest version of Digital Speech Decoder+ (DSD+) has just been released, bringing it up to version 1.071. There appears to be no changelog, so we are unsure as to what is new, but one obvious...
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Tutorial on Combining and Rebroadcasting ADS-B Feeds with ModeSMixer2
Last week we posted about how the author of the SonicGoose.com blog had written a tutorial on the use of ModeSDeco2 for decoding ADS-B with an RTL-SDR. Now the same author has continued his tutorial by...
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An interesting RTL-SDR direct sampling modification
Over on the Reddit RTL-SDR discussion board user pksato has posted an image of his direct sampling modified RTL-SDR dongle. His mod includes a simple common base amplifier with 9dB gain, an impedance...
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RTL-SDR vs. Airspy on ADS-B Reception
With the recent release of ADSBSpy, an ADS-B decoder for the Airspy software defined radio, many people have been wondering how much better the Airspy is compared to the low cost RTL-SDR dongle at...
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Adding a Low Pass Filter to an External Local Oscillator Source for the RTL-SDR
At the end of last month we posted about Milan’s work on using an Si535A voltage controlled oscillator with breakout board as a stable replacement for the default RTL-SDR’s low quality 28.8 MHz local...
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Listening to a Radio Amateur Stratosphere Balloon with an RTL-SDR
Over on YouTube user kpappa has uploaded a video showing his reception of the J43VHF radio amateur stratosphere balloon with an RTL-SDR dongle and discone antenna. On the 10th of May radio amateurs in...
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RTL-SDR Tutorial: Decoding Meteor-M2 Weather Satellite Images in Real-Time...
Back in September last year we posted a tutorial written by RTL-SDR.com reader Happysat which showed how to receive and decode high resolution Meteor-M2 LRPT satellite images. The tutorial required...
View ArticleYouTube video showing Meteor-M2 being decoded in real time
Yesterday we posted about a tutorial showing how to decode Meteor-M2 LRPT weather satellite images in real time with a new QPSK decoder plugin for SDR# and a modified version of Lrptdecoder. Over on...
View ArticleReceiving SSTV from FleetSatcom Pirates
Radio pirates often make use of the Fleetsatcom satellites to send and receive slow scan television (SSTV) pictures over a wide distance. Fleetsatcom is a satellite communications system used by the US...
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Wireless Door Bell 433 MHz ASK Signal Analysis with a HackRF
Paul Rascagneres, an RF experimenter has recently uploaded a document detailing his efforts at reverse engineering a wireless doorbell (pdf file) with a 433 MHz Amplitude Shift Keyed (ASK) signal with...
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Determining the Radiant of Meteors using the Graves Radar
With an RTL-SDR or other radio it is possible to record the echoes of the 143.050 MHz Graves radar bouncing off the ionized trails of meteors. This is called meteor scatter and it is usually used to...
View ArticleList of all SDRSharp Plugins from rtl-sdr.ru
Vasilli, an SDR# plugins programmer has released a list of all his available SDR# plugins on his website rtl-sdr.ru (in Russian, use Google translate). Some even which were missing from our own list....
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