Source for Bearcat scanner crystals

Bearcat scanner crystal source

Your source for vintage and reproduction electronic items

LOTS OF XTALS, CAPACITORS, INDUCTORS, TRANSISTORS, VOLTAGE REGS AND OTHER ELECTRONIC COMPONENTS AVAILABLE.

Low jitter GPS-locked frequency clock source
1 Hz to 1.1 GHz output. This device outputs high purity signal with frequency locked to GPS

Custom cases and foam molded

Low jitter GPS-locked precision frequency reference
400 Hz to 810 MHz output
mini version

High quality, digital copies of manuals for obsolete test equipment

Out of date and hard to find technical manuals are our specialty

Welcome to TekWiki, a wiki for the community of Tektronix oscilloscope enthusiasts.

Here at our locally owned, brick-and-mortar business, we strive to create a warm, friendly environment for all of our customers. We always offer free coffee and the full extent of the knowledge to inspire and educate customers so they can see their ideas come to life. We're always more than happy to answer any questions you may have regarding products or the project you're working on. Please stop by in-person to see the perks of buying from a real storefront!

Whether you need parts for work or play, you’ll find what you need at EPO. We deal extensively with basic components, wire, tools, connectors, surplus, project/educational kits, motors, robotics, micro-controllers, and hardware. We have vintage computer equipment, test equipment such as oscilloscopes, meters, power supplies and more! From typewriters to vintage film projectors and cameras we have it all.

We are a Dutch company and love exotic and obsolete electronics.
We service a global market that urges for vintage high quality products
while cheap inferior Chinese crap is trying to dominate. We only sell parts
from well known manufacturers that comply to specs you would expect
for a affordable price.

We keep our stock up-to-date by acquiring NOS parts out of insolvencies
and overstock. At the moment we have about 40,000 parts in stock within
2,000 product ranges.

A Raspberry Pi distribution to display one webpage in full screen. It includes Chromium out of the box and the scripts necessary to load it at boot. This repository contains the source script to generate the distribution out of an existing Raspbian distro image.

AMERICAS OLDEST MANUFACTURER & PUBLISHER
Crystal Set & One Tube Radio Plans Plans & Instructions

As one of the largest electronic component and power supply distributors, we take pride in offering customers a wide-ranging selection of in-stock products at competitive prices.

Computer parts

Computer parts and components

IT parts and components Distributor

From metrics to insight
Power your metrics and alerting with the leading
open-source monitoring solution.

SigNoz is an open-source observability platform native to OpenTelemetry with logs, traces and metrics in a single application. An open-source alternative to DataDog, NewRelic, etc. Open source Application Performance Monitoring (APM) & Observability tool

In this post I want to give some love to an open-source project that I have discovered just a few months ago: SigNoz.

[Heath Paddock] wanted to confound his friends with a game that mimics an escape room in a box. About six months after starting, he had this glorious thing completed. It’s a hardware version of a game called Keep Talking and Nobody Explodes where players have five minutes to defuse a suitcase bomb. This implementation requires at least two players, one with the box-bomb itself, and one who holds all the knowledge but can’t see the box-bomb to defuse it.

There are plenty of hobbies around with huge price tags, and ham radio can certainly be one of them. Experienced hams might have radios that cost thousands of dollars, with huge, steerable antennas on masts that can be similarly priced. But there’s also a side to the hobby that throws all of this out of the window in favor of the simplest, lowest-cost radios and antennas that still can get the job done. Software-defined radio (SDR) turned this practice up to 11 as well, and this radio module uses almost nothing more than a microcontroller to get on the air.

The design uses the capabilities of the Raspberry Pi Pico to handle almost all of the radio’s capabilities. The RF oscillator is driven by one of the Pico’s programmable I/O (PIO) pins, which takes some load off of the processor. For AM and SSB, where amplitude needs to be controlled as well, a PWM signal is generated on another PIO which is then mixed with the RF oscillator using an analog multiplexer. The design also includes a microphone with a preamplifier which can be fed into a third PIO; alternatively it can receive audio from a computer via the USB interface. More processor resources are needed when generating phase-modulated signals like RF, but the Pico is still quite capable of doing all of these tasks without jitter larger than a clock cycle.

Stream-Pi runs on multiple platforms; Windows, MacOS, Android, iOS and Linux. This also includes ARM Systems like Raspberry Pi.

How to Build a Raspberry Pi Pico-Powered Stream Deck Keypad

Tinkercad is a free, easy-to-use app for 3D design, electronics, and coding

Remote switches and loggers

These switch kits are the output from an effort to keep myself busy while on COVID-19 lockdown. I originally intended to just teach myself how to program and interface with various types of microcontrollers (PIC, Arduino, etc.). So, I bought several of the newbie training kits off of eBay and went to town. After exhausting all the built-in exercises, I went looking for a project where I could use my new-found knowledge.

I had owned an Ameritron RCS-12 remote antenna switch for many years and had always wondered how they selected antennas by simply pushing a momentary pushbutton switch. After opening up the controller, my suspicions were confirmed that a microcontroller was at the heart of the design. So, I decided to attempt to recreate the unit’s features that I used most as a breadboard project.

Use these plans to make a simple seismometer; build a sun photometer to make accurate measurements of the atmosphere; study rain, lightening, and sunlight; and build a wide variety of lightwave and radio communication circuits. This is a compilation of three of Mims's best-selling notebooks: Science Projects; Environmental Projects; and Communication projects.

The purpose of this wiki is to preserve and present information about the development and use of Linux in embedded systems as well as open source projects and tools for general embedded development. To use this wiki, click on one of the portal links below. This site has slides, and links to videos, for many years of the Embedded Linux Conference and Japan Jamboree!

Do you want to control a standard wall outlet device with your microcontroller, but don’t want to mess with the high-voltage wiring? The IoT Power Relay is a controllable power relay equipped with four outputs that help you create an Internet of Things project with safe, reliable power control. With the IoT Power Relay you can easily control the power going to a device with an Arduino, Raspberry Pi or other single-board computer or microcontroller. It provides an alternative to the Power Switch Tail.

The IoT Power Relay is designed to allow you to safely control an outlet device that operates at 3--48VDC or 12--120VAC. Each IoT Power Relay features a single input (from the included C13 power cable) to four outputs: one normally on, one always on, and two normally off. The durable SPDT control relay is rated at 30/40A, for 400,000 operations.

used and NOS industrial and electronic parts

Open parts for Ham Radio station

My source for Coax and Coax jumpers

The Antenna Farm is a distributor of two way radios, antennas, coax cables, coax connectors and related accessories. Many police and fire departments, EMS companies, public service organizations as well as the average consumer rely on us for a wide variety of high quality two-way radio products from industry leading brands.

Having been in business for over 20 years, The Antenna Farm has developed a wealth of expertise and experience in the two-way radio industry and is always happy to help our customers choose the best equipment for their particular needs and budgets.

Since 1988, we have been developing and manufacturing high-frequency components and devices for well-known industrial companies, research institutions and ham radio operators. High Frequency components for industry and research.

TINKERplate is the first Pi-Plate that is fully compatible with the Raspberry Pi HAT standard. With this design, we have borrowed features from our other products and squeezed them down onto this tiny form factor. And like all Pi-Plates, you can increase the number of available I/O ports by stacking up to eight TINKERplates.

On 10/10/2023, Debian Bookworm was released for the Raspberry Pi. This OS has a number of new features that improve the GUI as well as some behind the scenes improvements. One change however, is going to be a little painful for users of Python. Specifically, any code that uses a library added via the pip utility has to be executed inside a virtual environment. While the reasons for doing this are valid (see PEP 668 for more details), the solution is somewhat draconian. Perhaps a more elegant solution will arrive in a later release of the OS, but until then, you can choose to either hold off upgrading to Bookworm (and stay with Bullseye) or to do the following:

USBView is a small GTK application to show what the device tree of
the USB bus looks like. It shows a graphical representation of the
devices that are currently plugged in, showing the topology of the
USB bus. It also displays information on each individual device on
the bus.