60 Results for "rtl-sdr"

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...

MCX connector has arrived!
Log from The tiny radio telescope
Finally! Some progress! Our RF coax F type cable to MCX connector has now arrived! We can now attach the RTL-SDR dongle to the satellite dish!

Getting Started
Log from RTL-SDR
To get started, I purchased an RTL-SDR dongle and antenna kit from Amazon. This came with the dongle, an antenna, and some equipment for connecting the two. The kit came in a couple of business days. More information about the dongle can be found on...

Hack Chat Transcript, Part 1
Log from Learning DSP and SDR Hack Chat
OK all, big crowd today. A warm welcome to all of you who came over via RTL-SDR.com, and to everyone else. I'm Dan, a staff writer here at Hackaday, and I'll be the mod today for Dr. Marc Lichtman as we dive into Learning SDR and DSP! Welcome, Marc!...

USB cable extension tips, pics, and the dirty things your computer doesn't want you to hear
Log from Enter the complex world of SDR
So that computer of yours, I'm sad to inform you that your PC is a RF menace, and the DVB tuner must connect to it. This isn't ideal for the SDR, it's like having a cell phone conversation while present at a Rock concert. So our first step is to build...

Bought a cheap dvb stick, now what?
Log from Enter the complex world of SDR
Often this is posted within forums, and as comments to articles about software defined radio. No matter what the post contains we often see something like this. "Hackers use DVB dongle to reveres engineer the 70's song Do The Hustle" ; and the first...

Principle Of Operation
Log from Open Field Probe
Near field probes detect time-variant electric and magnetic fields in the "near field" around an electrical device, ie the region within one wavelength where normal radiative effects have not yet been expressed. Energy can be strongly coupled into probe...

Radio Direction Finding Techniques
Log from Bloodhound: Autonomous Radiolocation Drone
To be able to locate a radio beacon using the drone, the appropriate radiolocation technique needs to be determined. This log entry looks at the methods available and assesses their suitability for using with SDR on the drone, to find the best method...

Closing the Security Gap
Log from The Moteino Framework
HTTP(S) and Websockets SecurityThere are a lot of open source home automation attempts out there. Many are missing some essential security that leaves them vulnerable. Those that actually allow the user to control physical things in their...

SatNOGS now equipped with Diplexer
Log from SatNOGS - Global Network of Ground Stations
We've been thinking for some time that there is no need to install two separate RTL-SDR dongles to cover both VHF and UHF. It increases power consumption on WR703N without actually having any benefit, as using two dongles simultaneously is limited by...

Hack Chat Transcript, Part 2
Log from Software Defined Radio Hack Chat
BSA Secure12:31 PM@RichardCollins I'm playing with Viasat Surfbeam 2 modems and their TRIA's (Outdoor units) that supports Input (RX) Frequency 18.3 to 20.2 GHz Output (TX) Frequency 28.1 to 30.0 GHz. I'm getting them on various none-ebay portals for...

Smaller Flip-Flops
Log from Q2 Computer
I started out by looking into RTL as a possible substitute for NMOS for the Q2 as a way to speed it up. In the end, I think NMOS is probably the best bet:RTL requires base resistors, which greatly increases component count.An RTL gate always draws power...

Multiple Modulation Methods
Log from Serial Port SDR
So far, I've experimented with three methods for modulating audio onto RF output from the serial port. They're all pretty simple, and all cause a ton of spurious emissions up and down the band, but are interesting to play with. The first...

Hack Chat Transcript, Part 1
Log from Designing Hardware Challenges Hack Chat
Hi all, welcome to the Hack Chat. I'm Dan, I'll be moderating today for our guest Michelle Thompson, who's here to tell us about what goes into designing hardware challenges for cons. I'm not sure I saw her log in yet, though - are you out there, Michelle?...

Multi-Slave Write Access Demo
Log from InterNoC
After a few weeks of days of debugging and a few weeks of life getting in the way a first real-case scenario demo of the InterNoC functionality is presented here... Setup This log presents a demo of the InterNoC hardware design (see Fig. 1) implemented...

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