385 Results for "rtl-sdr"

SDR-RTL Dongle
Log from Reverse engineering of an unknown 868MHz protocol
I got an cheap SDR-RTL USB dongle on ebay for ~ 20 euros. The dongle contains a Realtek RTL2812 and a Realtek R828D chip, which can receive radio signals between ~30 and 1700MHz.

RTL-SDR first tests
Log from The tiny radio telescope
Using an Android driver and RF analyzer app, we have now confirmed that the RTL-SDR dongle is, in fact, working correctly. This may be my last log for a while now, as we are waiting on delivery of the satellite LNB components. I had to order out of country...

the rtl-sdr turns into an antenna farm
Log from networked RTL-SDR server
i've been building out an amateur radio base station, of which the RTL-SDR networked receiver is to be part. the base station has turned into a big, deep rabbit hole... station grounding, lightning protection, RFI management, cabling and getting antennas...

SDR at last!
Log from The tiny radio telescope
Big milestone reached! We actually managed to hook up the RTL-SDR dongle to the LNB with the inline signal booster too!As a simple test, I tuned it to a local radio station...

SDR carrier
Log from Zvychai One
Get it? Because radio signals have carrier frequency? So, i've added another rail attachment which can hold a generic SDR dongle and generic "rabbit ears" antenna on a swivel mount (how handy it has 1/4" threaded mount so that is what is going to be...

Conquer FPGAs without RTL
Log from Conquer FPGAs without RTL
Conquer FPGAs without RTLSeeking a wider audience for this project.Also welcome feedback and omissions.

Kerberos SDR DF
Log from Yet Another Doppler Direction Finder w/ Teensy DSP
I have heard about Kerberos SDR and saw the direction finding video. It's hard to tell how accurate it is. It's using TOA measurement instead of Doppler. That isn't necessarily better or worse. TOA is susceptible to reflections...

Initial RTL Written
Log from Trinity Core and Net
The initial RTL prior to debug has been written for the Serial Display peripheral. The display address will start at any byte address which will make things flexible. It compiles and elaborates on it's own successfully. Next to link it in to the Dual...

SDR radio telescope
Log from Silly hardware wishlist
It's been a lifelong quest to find a practical use for ham radio. There was the idea of listening to the space station. There was trying to receive GOES satellite data, which the internet has proven to be extremely hard. 15 years ago,...

Some RTL circuits
Log from The W-4096: A Computer Made From RTL Logic
Here are a few of the circuits that I'll be using to make this computer. Here you can see a NAND, AND, NOR, and OR gate, as well as a D latch.

RTL lib 1.0 Release
Log from Play FPGA like Arduino
RTL lib 1.0 is released on GitHub, with the following peripherals:*) ADC: ADC for Altera MAX10*) BCD: Binary Codec Decimal*) block_memory: BRAM inferred*) chip_ID: chip ID for Altera MAX 10*) codec: voice codec*) debug_counter_led: counter and led for...

Step 1 : Picking the right SDR softawre
Log from SDR dock 1.0
Goal: I want to find SDR software that supports keyboard shortcuts, and is most feature rich for raspberry pi. An option to program custom plugins will be an added advantage. A few of the available options for raspberry Pi. GQRX : GQRX is a general-purpose...

Another RTL/DCTL latch
Log from Hackaday TTLers
Discussions on the chat with @Tim and his reseach into weird latches made me look back at my MUX-based latch. The early idea was not working but later revisions did, once I created a fully functional MUX2. So here is a new version : This one works...

RTL vs. DTL vs. LTL
Log from LCPU - A CPU in LED-Transistor-Logic (LTL)
RTL versus DTL Both RTL (Resistor Transistor Logic) and DTL (Diode Transistor Logic) were common logic families in the early days of transistors. The image above shows inverters in both logic families. RTL is the simpler of the two, but it suffers from...

AIRSPY SDR Dongle
Log from Reverse engineering of an unknown 868MHz protocol
In the next step I try to receive a signal with an SDR Dongle and the software AIRSPY (SDR#).OK, this looks good. I got a signal on 868.475MHz. the two peaks left and right beside the mid frequency is typical for a FSK (frequency shift keying) modulation....

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