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It was the very first all-transistor commercial radio in the United States and in the world. How much have circuits and enclosure designs changed in 69 years?

Why use HDMI over IP in some cases? The image quality is noticeably worse than a classic HDMI twisted-pair extender. Let's see a few examples and answer this together.

The noise filtering function - how to use it, when it helps and when it interferes with measurements. An important parameter is the velocity of propagation (VoP) - how it affects the measurement accuracy and how it can be determined experimentally if its value is unknown.

What is tube sound? How is it different from the transistor one?How do long radio tubes differ from short ones? Today we will build a small tube amplifier powered by 12 volts AC. And with its help, we will hear the answers to these questions and see them on the oscilloscope screen.

We have many years of experience in developing electronic devices for various customers. When we complete a non-standard task, we often explore new methods and ways to achieve the required result. By accumulating this knowledge, we create solutions to simplify the design and creation of devices. It's time to share some of our solutions with the community now.

On the oscilloscope screen you can see signal distortions and use them to determine the health of the circuit. But where do you get the reference signal? - A signal generator will help!

How to compare OTDRs from different manufacturers? What is more critical: resolution capability or sensitivity? How to determine the actual range of a device?

We have many years of experience in developing electronic devices for various customers. When we complete a non-standard task, we often explore new methods and ways to achieve the required result. By accumulating this knowledge, we create solutions to simplify the design and creation of devices. It's time to share some of our solutions with the community now. This is my team's first public project.

Earlier, we'd looked into the case of controlling one DVR from two remote rooms. The 4K HDMI KVM twisted-pair extender INRIKS EX4076KVM was the best device for the job. We decided to make a more detailed review of it and test it properly.

How do electronic oscillators work? Who invented them, and when? And how can we apply them? We will talk about all this today.

What determines the accuracy and range of defect detection? What is better: short/long or single/multi-pulses? Case: one reflectometer, but different types of cables.

Today we will assemble a small medium wave radio transmitter with which you can check and configure AM radio receivers, as well as listen to music through them if you connect an MP3 player or smartphone to it.

What if you need to connect two different remote workstations for CCTV operators so that every one of them can see the image from the DVR and control it? Let's try to solve this problem in practice using HDMI KVM extenders over twisted pair and see if it works out.

My first impression was that I had finally assembled the best overdrive in my entire life. For the first time, a cheap Squier Bullet Mustang electric guitar with stock humbuckers sounded equally good with all the cabinets I usually simulate and switch between when testing a new pedal.

The reflectometer measures the reflection of a signal. This method for cable damage detection complements all the others we've previously discussed and, in some cases, gives more accurate results, especially when locating wire entanglements or breaks and looking for non-persistent faults. Furthermore, it allows one to clearly identify several individual problems when they interfere with each other, as well as determine the range of each one of them.

HDMI extenders can connect with an optical fiber cable if the distance between video equipment exceeds 400 feet. This post describes this method in detail.

Have you ever made a processor? I did. Took me just 12 microchips and a clock generator. The processor can execute several commands, and programs can be written for it. The program code and input data are entered using micro switches, and the state of the output register is displayed by four LEDs, according to the number of bits.

Sometimes, a case exists for using multiple computers from a single desk. Sure, buying several sets of keyboards and mice is always easier. Still, it's smarter to use a specially designed unit, a KVM switch like the one we have here, the INRIKS SW4041KVM.

What defects can the device detect? How does localization work? Lifehacks

The fuzz effect's history began the same day the history of rock 'n' roll began. Today, we will study the circuit and history of the pedal, which is copied and improved by dozens, if not hundreds of companies and masters. And, of course, we will build and listen to our copy.