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A large collection of electronic components symbols in spanis

Tubes and electronic components online shop. Dealer for svetlana, sovtek, tesla, mullard and tungsol tubes

The antenna ground or earth system can be key to its operation whilst also being a key safety feature. This article is about grounding systems for antennas, covering different aspects of grounds made for antenna safety, or expressly for lightning or just to improve antenna performance, being ground an antenna component.

Online shop for electronic components, sensors, connectors, capacitors, resistors, passives, semiconductors from Baitron independent electronic components distributor.

Amateur radio news, events and other electronic stuff by KE2YK

A basic YAGI UDA online antenna calculator, accept as input frequency, number of elements, diameter of parasitic element and boom diameter. This online calculator will generate a basic design data including each element length and spacing.

Antennas custom made to your frequency of choice

EDI is a common electronic data file format required to submit contact logs. Very popular among contest logs formats.

TRS RenTelco provides new or used electronic test equipment for rent, lease or purchase. Solutions are provided for various type of equipment such as spectrum analyzers, network analyzers, oscilloscopes etc from leading manufacturers. Our products are widely used in communications, R&D, semiconductor, and wireless industries.

Malcom Technical Support Radio Electronics Repair, ICOM Authorized Service Center, also service 1988 and newer Kenwood HF/VHF/UHF transceivers based in Toledo, WA USA

The basics of using an oscilloscope, this article is meant for thiose with very little or no experience at all with electronics or oscilloscope.

Jitcomp is an independent distributor for obsolete, discontinued and hard to find electronic components

This is a great project to learn about the basics of electronics, batteries, and renewable energy. The finished project can charge a phone or tablet, light up a camp-site, and provide for whatever other small electric needs you have.

The Oxley Region Amateur Radio Club, ORARC provides the encouragement for those interested in the scientific development of radio communications and associated electronics.

Small company based in Santa Maria, California, designing and manufacturing electronic products for amateur radio, education, and commercial users. Product line includes APRS devices for real-time vehicle tracking, weather monitoring, and remote telemetry, as well as the ADS-SR1 Simplex Repeater, the ADS-WS1 Weather Station, the SSTVCAM slow-scan TV camera, and GTRANS protocol translator for Garmin FMI.

An overview or summary of amateur radio / ham radio contests, contesting and a contest calendar of some of the more popular contests.

Distrelec company is a large european electronic distributor, focusing on electrical and engineering components distribution in Europe.

This active antenna for the shortwave band provides surprising performance, even indoors. As the name implies, the main loop is made from a Hula-Hoop with the metallic paint stripped off and a single turn of 14AWG copper wire inserted inside the hoop.

Gloucester amateur radio and electronics society

Surprisingly, although PCB soldering is the core process of electronics assembly, few people do know how to solder reliably

Acknowledged worldwide for the quality, accuracy and the capability of its component measurement products.

Discover the key facts about what radio propagation is, the different types available and how they affect different frequencies.

Passive Bandpass Filter online calculator and filter formulas. Active Inverting Op Amp Bandpass Filters, Active Noninverting Op Amp Bandpass Filter, just enter the Low ir High Cutoff Frequency

An overview of the development of the Morse key for sending the Morse Code, from the first camelback keys, through straight keys and sideswiper keys to the semi automatic keyers including the Vibroplex to the modern electronic keyer.

Wuxi Venus Information Technology is an amateur radio devices dealer in China, source for high end, high performance RF products,Control products,APRS products and Commercial products. It provides a variety of solutions to the antennas systems, APRS,electronics kits and electronics components

Is for those who wish to explore the globe by radio and experiment with electronics.

ESR is located in the North East of England and was formed in the early 1980s offering customers a broad range of Audio-Visual, Electrical and Electronic Components and Accessories.

Article about the essentials of radio signal path loss, its causes and prediction, and its use in radio coverage and wireless survey tools

Ucchino is an Italian manufacturer of electronic cirucits inclunding Digiham amateur radio USB interface for digital modes, morse code oscillator, filters and RF protectors

LB3HC's hightech blog - Amateur radio, RF design, electronics, uC, software, Arduino, AVR, Antennas

Amateur radio dealer based in Switzerland

Since 1992, MATsolutions has delivered the assurance our clients need when acquiring, maintaining, and managing high-quality test and measurement equipment. Used Electronic Test & Measurement Equipment Sales, Calibration, Repair & Services

The TCARES membership provides communications assistance with fires, floods, search & rescue, and health & welfare message assistance to the Red Cross, without pay, using their own equipment, usually in twelve hour shifts.

The Greater New York Vintage Wireless Association is the number one club serving the collector of antique and vintage radios, TVs, and electronic equipment in the New York City Long Island area.

The 1 watt 20 meter QRP transmitter with VXO. This is a nice QRP transmitter that can be used in combination of one of the simple receivers.

What is a QSL Card and what should be the content of each QSL card, collecting cards, electronic QSL LoTW eQSL, QSL Bureau, and QSL managers.

Amateur radio and two-way radio communication dealer for most popular ham radio brands based in Holland

Pacific - Scout Radio & Electronics Service Unit

A Trapped dipole inverted V antenna for lower HF Bands. Construction details are for temporary installation. Permanent installations will require additional ruggedising and waterproofing however the basic electronics concepts remain the same. This project includes SWR plots for the three bands and pictures details of the homemade traps.

Build your own 3-IC Iambic Electronic Keyer. Here, you will find schematics and operation descriptions. Includes Dot/Dash Memory, Progressive Element Weighting

A 70cm / 432 MHz Transverter Project transverter circuit is an electronic device that converts a radio signal from the 2 meter to the 70 centimeter band and vice versa, allowing a single transmitter/receiver to be used for both bands. It consists of an IF stage, local oscillator, frequency multiplier, and amplifier. The circuit must be designed for minimal signal loss, noise and intermodulation distortion.

his article explores the construction of a PL519 tube amplifier, utilizing Ulrich L. Rohde N1UL's insights. Focusing on a modest 25W continuous output, the design ensures robustness with forced air cooling. The detailed breakdown covers input matching, screen grid voltage generation, bias adjustment, anode power supply, heater power supply, and monitoring circuitry, providing valuable guidance for ham radio enthusiasts.

Coil64 (Coil32) is a versatile tool for calculating single-layer inductance coils used in various electronics, such as matching circuits and amplifiers. The online calculator enables users to estimate the number of turns, winding dimensions, and select the appropriate wire type for home-brewed RF inductors. It employs Bob Weaver's equation, factoring in wire corrections, and allows for the calculation of Q-factor and self-capacitance. Coil64 is compatible across multiple platforms, including Windows, Linux, Mac-OS, and Android.

Microwave Filter Company is a leader in the design, development and manufacture of high quality passive electronic filter products in the 5 Hz to 50 GHz frequency spectrum.

The quarter-wave Marconi working against ground is a popular and inexpensive antenna for 160 meters. A lot of newcomers to the band favor this simple antenna because it's easy to put up, it isn't too big, and it works.

Ulrich L. Rohde N1UL conceived an outstanding 2m to HF receiving converter with specific requirements, including 144-148MHz to 28-32MHz coverage, low noise, high IP3, and a unique modular design. The design decisions emphasize modularity, absence of preselection, stability, and a passive mixer, showcasing Rohde's distinctive approach.

An easy to build 6 watts SSB transceiver for 14MHz. BITX is an easily assembled transceiver for the beginner with very clean performance. Using ordinary electronic components and improvising where specific components like toroids are not available, It has a minimum number of coils to be wound.

The article details the design and construction of a four-band Moxon beam by a radio amateur. The beam, mounted atop a rooftop tower, aimed for gain over a dipole on 20 meters, cost under $500, and included additional bands. The design features fiberglass spreaders, four bands (20/15/10/6 meters), and a single feedpoint. The construction involved computer modeling, NEC source code, and specific dimensions. The article outlines the assembly, materials, and tuning process, including in-situ adjustments for optimal performance. Despite initial challenges, the beam improved signal strength and facilitated contacts on multiple bands, marking it as the best HF antenna the author has owned.

This document illustrates the processes carried out for the construction of an ionospheric sensor or ionosonde, from a universal software radio peripheral (USRP), and its programming using GNU-Radio and MATLAB.