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- Technical Reference > 3D Printed Projects
- Technical Reference > Digital ATV projects
- Technical Reference > QRP Projects
- Antennas > 12M
- Antennas > 20M > 20 meter Dipole Antennas
- Antennas > 40M > 40 meter Delta Loop Antennas
- Antennas > 40M > 40 meter Loop Antennas
- Antennas > 40M > 40 meter Vertical Antennas
- Antennas > 40M > 40 meter Yagi Antennas
- Antennas > 6M > 6 meter J-Pole Antenna
- Antennas > 70cm
- Technical Reference > Antenna Rotator
- Technical Reference > APRS
- Technical Reference > Arduino
- Technical Reference > ATV
- Technical Reference > Batteries > Battery Charger
- Antennas > Bazooka
- Antennas > C-Pole
- Antennas > CobWebb
- Technical Reference > DTMF
- Technical Reference > Frequency Counter
- Antennas > G5RV
- Technical Reference > Headsets and Speakers
- Antennas > Log Periodic
- Technical Reference > Arduino > Morse Code
- Technical Reference > Morse Code Decoder
- Technical Reference > Power Meter
- Technical Reference > Power Supply
- Technical Reference > Receivers > Progressive Receiver
- Technical Reference > QRM Eliminator
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A Fox transmitter by VE2EMM with construction details part list and schematic diagram -
An interesting and easy to build loop antenna for VHF bands, that present a feedpoint impedance of 50 ohms thus avoiding the need for a 1/4 wave impedance transformer. This antenna is ideal for sota and other portable operations -
Thsi article describes a microcontroller driven semi-automatic antenna tuner capable of handling power levels up to 150 watts. The device is a low pass filter tuner manually tuned by setting the optimized L/C combination by hand and then storing the values into the EEPROM of the mictrocontroller to recall them later (seperately for each band from 80 to 10 meters including WARC bands) -
Launch of a hybrid rocket from high altitude by untsville Alabama L5 Society -
The H44 IOTA Team will activate a virgin IOTA – OC-285 Stewart Island aka Sikian Atoll, which has NEVER been activated yet in June July 2013 -
Network Analyzer on an Arduino Shield which covers from 0-72MHz using an Analog Devices AD9851 DDS chip -
A WSPR beacon project based on Arduino nano (atmega328P) based microcontroller -
The WhereAVR is a small, lightweight, low-power, and low-cost APRS tracker with a full compliment of analog and digital I/O, as well as the ability to decode ax.25 packets. This allows for the reception of remote commands without the need for a real TNC. -
10m Flowerpot Antenna, monoband half-wave vertical coaxial dipole antenna for 28 Mhz. -
The project in this article illustrates how to do this in a simple and low cost way so that you can easily access the microwave bands using the existing HF or HF/VHF transceiver as IF. -
An end-fed half wave antenna matching unit made of 3:24 turns ratio on a FT140-43 toroid with a 150pF capacitor across the input. -
A project to turn a Raspberry Pi into a very versatile tracker, digipeater and an iGate -
Use this helpful tool to translate between Morse code and text. To begin, please enter words or Morse code in the Input box and press Translate. This online tool let you translate and encode Morse code into text and vice versa text into Morse code, allowing also to play with different wpm, the resulting translated code. -
Ham radio, amateur radio, satellite communication, radio, radios,antenna, antenna design, yagi, cross yagi, power divider, splitter, Brisbane. -
Wireless Society of Southern Maine Projects, instructions and photos for many ham radio projects and experiments, including antenna construction and modelling, kit building, station setup, restoration and more -
These band filters are based on 3 or 5 sections Butterworth band pass filters, maintaining 50 Ohm impedance, and when built around toroidal inductors, can be made very compact. -
Frequency agile 80 metre CW QRP transmitter. Ceramic resonators vary in the frequency shift obtainable. The one in the prototype of this article gave 3.525 to 3.558 MHz coverage. -
ATV - Analog and DVB-S home made equipment, inclueds home made projects and related ATV info. -
The Advanced ATV Repeater is probably the most versatile ATV repeater controller in The World. It can run entirely under the operating system or all repeater functions can be controlled from any other computer -
When experimenting with the WellGood Loop antenna, I came across the PA0RDT MiniWhip design referenced in several places. The construction of the PA0RDT MiniWhip is simpler than the WellGood Loop since there are no inductors to wind, but during my testing, I have found the loop to have slightly better performance. -
GridLocW is a free Lat/Long to Maidenhead converter for Windows - with optional GPS support, includes the formula to calculate geodesic distance (in m) between two points specified by latitude/longitude. -
Mint tin transformed into a switched 9v battery to Anderson PowerPole -
This morse key and buzzer design only requires parts that one may already have or are easy to find on the web. There is nothing critical except that the contacts must meet when the key is depressed. -
An home made VNA made with Arduino Nano. This project features an LCD display 4x20 works from 1 MHz to 60MHz, can use bluetooth connection with Blue VNA android app. -
A remote rotor controller, you can use to connect your laptop tablet or smartphone directly to the rotor using it as a Acces point or alternatively it can be connected to existing Wi-Fi network -
This page details my building of a 100 Watt Power Amplifier for the 432 MHz Band based on two Motorola MRF646 transistors taking inspiration by Carlo Gnaccarini VK3PY, formerly VK3BRZ -
A table that summarize all known amateur radio emission modes, with reference to software and platform available for digital modes -
The goal of this interesting project is to monitor a particular set of frequencies for a set period of time. In this article your will find instructions to build and operate an all-band WSPR node using cheap hardware and free software. At the end of this you'll have a Raspberry Pi, connected to an RTL-SDR dongle that monitors all of the WSPR frequencies rotating randomly every 15 minutes. -
An optocoupled audio interface between PC and Transceiver for digital modes. The article includes full schematic of complete board and build instructions. -
The MiniTioune receiver project, developed by Jean-Pierre F6DZP, consists of the home constructed MiniTiouner hardware which interfaces via a standard USB 2.0 port to a Windows PC running the MiniTioune software. It can be used to receive satellite broadcasts transmissions making it ideal for use on Q-oscar 100 Es hail-2 without any external frequency converters. -
A new SDR radio concept developed by N6QW as an experimental 5W SDR transceiver for the 40 meter bands. Radio and Rig (RADIG) is a term conied by the author. -
UHSDR stands for UniversalHamSoftwareDefinedRadio. The project provides the firmware to run standalone HAM transceivers. It currently supports STM32F4 and STM32F7 MCU based QSD designs. -
Explore the detailed setup, essential software, and operational nuances for Greencube (IO-117), a Medium Earth Orbit (MEO) satellite with a 70cm digipeater, offering DX possibilities for amateur radio enthusiasts. From antenna configurations to software choices, this guide covers everything for a successful Greencube experience. -
A multi-plaform CW-Trainer program (already tested on Windows and Linux Ubuntu, now testing on Raspberry Pi), multi-skin and it will provide different learning programs. -
The amateur radio listener for when you're not on the radio. Repeater-START, the offline repeater listing app for Windows, Linux, Raspberry Pi, Ubuntu, Librem Phone is available, Now with grid square display, topographical maps and frequency preferences -
Experimentin wire antennas on top band using several type of aerials. This includes a 40 to 160 meters EndFed Half Wave kite antennas and 160m/80m loaded vertical antenna. -
In this article we share a useful and simple project to convert an unneeded car power cable to an Anderson PowerPole adapter. -
A simple and cheap solution to monitor temperature of your repeater implementing a Raspberry Pi device with a set of popular tools made in python a database and RRD tool -
This stacking offers a well known simple phasing technique. All elements can be fed in parallel by open wires provided that they are fed in phase. This can be achieved by twisting the open wire phasing-lines at 180 degrees. -
Mounting on roof at the right ground level can greately impact on antenna performances because will affect the radiated angle of energy. -
A polarity checker is a very useful item to have around the shack and in a go-kit. This project, inspired by a QST article on powerpole connector protection illustrate how to build a polarity checker. -
A 3 band dipole antenna for 40-80-160 meter bands, It's made with easily available materials and is designed for inverted V mounting. The antenna is shortened for these bands, but still manages to make contacts in 80m and 160m with stations in Canada and the USA. The construction details are provided, including the dimensions of the antenna elements and the traps. The antenna is easy to build and provides good performance in all three bands. In Italian. -
This article presents an innovative homebrew antenna design utilizing surplus ladder line as a receiving antenna for HF and MF bands. The Ladder Line Antenna (LLA) transforms standard 450-ohm ladder line into a directional, bidirectional, or omnidirectional antenna system through different termination methods. The design, which requires minimal space and height, achieves 6-10dB front-to-back ratio on 40-160m bands using a 33-foot length. This DIY wire antenna project offers an efficient, low-profile solution for amateur radio operators, featuring broadband operation without ground radials and easy installation below fence height. -
he RRRA was formed in 1971 for the expressed purpose of promoting FM and repeater operation -
A lightweight PVC hand-held telescopic 2 element 2m (145 MHz) yagi using two pairs of TV rabbit ear antennas as the driven and reflector elements. Approximate directional gain is 5dB. -
A collection of some electronics hobby projects by KC6QHP that includes microwave transverters for several radio frequencies such as 79 GHz, 47 GHz 24 GHz and 10 GHz. All projects includes detailed pictures of components, like voltage regulator boards, RF Decks, sequencer and protector board and receiver details. -
This article provides a step-by-step guide for assembling a Raspberry Pi-based Satellite Tracker Interface, designed to work with Green Heron Engineering's RT-21 controllers and MacDoppler software. The guide covers hardware assembly, SD card image installation, and system configuration for satellite tracking. -
A portable loop antenna, made with a 3 meter loop resonates with the chosen capacitor from just below 7MHz to about 28.300MHz which makes it usable on the bands from 40m to 10m. -
Construct the Peaberry, a SoftRock-compatible SDR transceiver. This project is aimed to build an amateur radio transceiver that operates on the medium or short wave bands -
Ham Radio DIY projects all around morse semi-automatic and fully automatic bug keys construction manuals o semi-and fully automatic Bug keys, portable light weight magnetic loops, making a telegraph set (school project) and lots of kitchen projects (useful hamradio gear made by easily available material)