When we first spotted the article about a one-transistor amateur radio transceiver, we were sure it was a misprint. We’ve seen...
Makers
It’s said that “Golf is a good walk spoiled,” so is attaching an amateur radio to a bike a formula for spoiling...
Ever since the beginning of the Space Age, the inner planets and the Earth-Moon system have received the lion’s share...
Welcome to the Design Review Central! sends us their board, and it’s a HAB (High Altitude Balloon) tracker board. It’s...
has pulled off a true feat of Meccano engineering: building a Meccano Hellschreiber machine. The design is a close replica of...
Like many of us, had a lot of electronic toys growing up. In a video you can watch below, he...
In the days before integrated circuits became ubiquitous, providing advanced functionality in a single package, designers became adept at extracting...
A tuned circuit formed by a capacitor and an inductor is a familiar enough circuit, and it’s understood that it...
When you buy a cheap ham radio handy-talkie, you usually get a little “rubber ducky” antenna with it. You...
Have you ever thought about getting into digital modes on the ham bands? As it turns out, you can get...
Meshtastic is a way to build mesh networks using LoRa that is independent of cell towers, hot spots or traditional...
OK, it’s official: the Quansheng UV-K5 is the king of hackable ham radios — especially now that a second version of...
Morse code, often referred to as continuous wave (CW) in radio circles, has been gradually falling out of use for...
We’ve said it before and we’ll say it again: being able to build your own radios is the best thing...
You have an old radio — in the case of , a Stromberg Carlson — and it needs new knobs....
Making a software defined radio (SDR) receiver is a relatively straightforward process, given the right radio front end electronics and...
Everyone who deals with electronics knows that grounding is important. Your house has a copper rod in the ground. But...
Doing electronics in the 1910s was rather rough, with the radio probably the pinnacle of hi-tech. Despite this, with some...
At one point, the Motorola 6809 seemed like a great CPU. At the time it was a modern 8-bit CPU...
We’ll admit to not fully knowing what has planned for the pair of RTL-SDR Blog V4 software defined radios (SDRs)...
The germanium point contact diode, and almost every semiconductor device using germanium, is now obsolete. There was a time when...
Although much of the software that runs on the ESP32 microcontroller is open source, the Wi-Fi driver is not. Instead,...
We’ve all been there. You left your Walkman at home and only have your trusty Game Boy. You want to...
Today is another board from a friend, , who wants to convert a Yaesu FRG7700 radio to USB-C PD power. It’s yet...
found a schematic for a grid leak radio online and decided to throw together a few tubes on a...
