Unlock & Talk: Open Source Bootloader & Modem

Unlock & Talk: Open Source Bootloader & Modem

During the early years of cell telephones, lifespan was primarily restricted by (buttons sporting out, dropping telephones, or water harm), software program is a main purpose that telephones are changed right now. Upgrades are sometimes prompted by dissatisfaction with a sluggish cellphone, or producers merely stopping updates to cellphone software program after just a few years at […]

SDR IF Experiments

SDR IF Experiments

The R820T tuner IC is used within the in style Airspy software program outlined radio (SDR) in addition to lots of the cheap RTL SDR dongles. [TLeconte] did some experiments on intermediate frequency (IF) configuration of the chip, and also you’ll find his results interesting. Using 5 million samples per second and the machine’s actual mode, […]

Beeping The Enemy Into Submission

Beeping The Enemy Into Submission

In July 1940 the German airforce started bombing Britain. This was met with well mannered disagreement on the British facet — and with excessive expertise, ingenuity, and improvisation. The defeat of the Germans is related to anti-aircraft weapons and fighter planes, however a major quantity of potential harm had been averted by means of radio. […]

The Raspberry Pi 3B+ As An SDR – Without The SDR!

The Raspberry Pi 3B+ As An SDR – Without The SDR!

We’ve grow to be used to software-defined radio as the way forward for radio experimentation, and many people could have some type of SDR . From the $10 RTL USB sticks via to all-singing, all-dancing fashions at eye-watering costs, there may be an SDR for everybody. What concerning the concept of an SDR with none […]

An SSB Transceiver Using Only One Device? Surely not!

An SSB Transceiver Using Only One Device? Surely not!

There are a multiplicity of transmission modes each new and previous on the disposal of a radio newbie, however the chief of the pack remains to be single-sideband or SSB. An SSB transmitter emits the barest minimal of RF spectrum required to reconstitute an audio sign, solely half of the mixer product between the audio […]

Filter your Pi and be a Responsible Pirate

Filter your Pi and be a Responsible Pirate

At this level it’s fairly well-known which you can tack a protracted wire to the Raspberry Pi’s GPIO, set up some software program, and also you’ve obtained your self the worlds best pirate FM radio station. We say that it’s a “pirate” station as a result of, regardless of being ridiculously simple to do, broadcasting […]

Build Your Own Antenna for Outdoor Monitoring with LoRa

Build Your Own Antenna for Outdoor Monitoring with LoRa

LoRa and LPWANs (Low Power Wide Area Networks) are all of the vary (tee-hee!) in wi-fi today. LoRa is a sub 1-GHz wi-fi expertise utilizing refined sign processing and modulation methods to attain long-range communications. With that simplified introduction, [Omkar Joglekar] designed his own LoRa node used for outdoor sensor monitoring based mostly on the […]

Simple Decoder Serves as Solo Ham’s Test Buddy

Simple Decoder Serves as Solo Ham’s Test Buddy

For a pastime that’s ostensibly all about reaching out to contact somebody, ham radio can typically be a lonely exercise. Lots of hams construct and experiment with radio gear rather more than they’re really on the air, bettering their gear iteratively. The build-test-tweak-repeat cycle can get a little bit tedious, although, particularly whenever you’re making an […]

Putting a Poor Man’s Vector Analyzer Through Its Paces

Putting a Poor Man’s Vector Analyzer Through Its Paces

If something about electronics approaches the extent of black magic, it’s antenna idea. Entire books devoted to the topic usually merely scratch the floor, and until you’re a professional with all of the costly check gear wanted to visualise what’s occurring, the possibilities are fairly good that your antenna recreation is extra sensible than theoretical. Not […]

An Introduction to Storm Detector Modules

An Introduction to Storm Detector Modules

Lightning storm detectors have been round for a surprisingly long time. The early designs consisted of a pair of metallic bells and a pendulum. When there was a cost utilized, for instance by connecting one bell to the bottom and the opposite to a lightning rod, the bells would ring when a lightning storm was […]