Online antenna parts store, providing many accessories for amateur radio antenna homebrewing. Boom joiners, aluminium parts, elements clamps, filters, ferrites, fasteners, plasti caps, dipole elements. Based in UL
The DX Shop Limited are suppliers of high end equipment and manufacturers of the Linear Amp Gemini range of HF to UHF solid state linear amplifiers for the serious Radio Amateur.
A Lightweight 2m Yagi for SOTA. The boom is 20mm PVC electrical conduit and the elements are 2.4mm aluminium TIG welding rod. The antenna is carried as a single length of conduit with the elements stowed inside the boom, sealing them in with a bung. The driven element is connected directly to 50 Ohm coax with a BN-43-202 balun core to decouple the coax shield.
Ham Radio 3D Models published on Thingiverse, includes several parts for homebrewing amateur radio antennas, like spreaders, isolators a and mounts, wire antenna winders, adapters and many other accessories useful to antenna homebrewers.
Tucnak is multiplatform VHF/HF contest logbook. It is executable on Linux and other unix-type systems. Since v3 also native under MS Windows, Android and Kindle
Experimental Methods in DSP design. The author explains how a software defined radio works to help other amateurs with their learning. This set of tutorials takes you from how to write a single component to a fully working SDR.
3D printer models for Ham Radio accessories and parts like Crank knobs, antenna insulators, powerpole clips, adapters, yagi antenna clips, antenna and radio mounts.
PCB is an interactive printed circuit board editor for Unix, Linux, Windows, and Mac systems. This Software runs across multiple platforms such as Unix, Linux, Windows as well as Mac systems. This Tool is widely used for electronics as well as electrical circuit designing that comes with schematic capture. PCB offers high end features such as an autorouter and trace optimizer which can tremendously reduce layout time.
remoteRotator is a command line application which makes your azimuth / elevation antenna rotators available on the network. It available for Linux/Windows/MacOS and written in the programing language Go.
Audio Repeater is a windows application tha allows you to transfer, transmit, sounds from an input audio endpoint or device to an output one Playback. Audio transfer can be performed in any PCM audio format supported by Windows. KS version communicates directly with audio driver, bypassing all additional Windows audio processing
A travel, or a fixed vertical coax antenna originally designed by PA0FBK. This antenna is very easy to make from a piece of 50 ohm or 75 ohm coaxial cable, and can be either smooth, roll-up version, or rigid cable
Fritzing is for amateur circuit designers, enthusiasts and hobbyists to build their own design and develop their own projects. Fritzing offers a rich user interface. The source code of Fritzing is available on our Github. Fritzing is available in several languages and runs on windows, mac and linux.
Yeggi search engine results for amateur radio 3d printable models. If you are looking for 3d ham radio parts like loading coils, stands for radio, cases, antenna insulators and antenna supports here you will find many ready to use 3d models
Remote Orbitron enables either direct connection between a computer and the shack unit using a serial port OR remote operation from the internet using a WIZ110SR serial to ethernet board.
This project taps into the NMEA stream and provides both a visual display with an LCD and also LED indicators and a sounder. The LCD outputs include 3D Lock, 2D Lock and NO Lock while the UTC time is also displayed to screen.
TinyCAD is a an open source program for drawing circuit diagrams which runs under Windows. TinyCAD is a program for drawing electrical circuit diagrams commonly known as schematic drawings. It supports standard and custom symbol libraries. It supports PCB layout programs with several netlist formats and can also produce SPICE simulation netlists.
An excellent tool to create, design printed circuit boards in a simple and easy to learn way. ZenitPCB is free for personal and amateur use, limited to 1000 pins, that is more than enought for any amateur radio electronic project
Logisim is an educational tool for designing and simulating digital logic circuits. With its simple toolbar interface and simulation of circuits as you build them, it is simple enough to facilitate learning the most basic concepts related to logic circuits.
A Cross Platform and Open Source Electronics Design Automation Suite that runs on multiple operative systems. It allow to easily create even complex schematics and is suitable for professional use
DesignSpark PCB is a free PCB design tool, by rs online, designed to help the user to convert their design into PCB faster with unique design options. DesignSpark is a powerful software engine that enables you to capture schematics and design PCB boards and layouts.
Make and automatic antenna tuner based on Arduino and using economic card. This ATU Project can be installed outdoors and controlled remotely by an rs485 link
Choking balun for lower HF and MF bands. (1.8MHz – 10MHz). Requiring a choking balun to isolate the potential RF pick up on the coax cable as it runs past equipment such as computer within the radio room at lower HF and MF frequencies a simple method of winding RG58 coax onto a Powdered Iron Toroid Core was constructed.
A complete guide for newcomers edited by the Radio Amateur Society of Australia Inc. This free PDF includes several basic articles for new hams, with particular reference to Australian regulations, but is however a good guide for those who are aproaching the hobby worldwide.
What is antenna polarization, and why does it matter. Horizontal versus Vertical versus Circular polarization. Undestanding how antennas perform better with different polarizations.
UK based manufacturer of digital mode PC fully isolated interfaces. Includes several types of interfaces including USB interfaces for CW and Digital modes
How to improve your transmitting antennas for very low solar activity periods, vertically polarized 160 meter antennas, horizontally polarized 80 to 10 meter antennas, single or stacked yagis, multi-tower stations
The interactive Smith chart enables users to navigate their way around a Smith chart, using simple discrete element impedance matching. This page allows users to try using the Smith chart, for education and interest purposes, without installing any software. Try changing the value in the load box to see the location of the impedance on the chart.
An home made VNA made with Arduino Nano. This project features an LCD display 4×20 works from 1 MHz to 60MHz, can use bluetooth connection with Blue VNA android app.
WSJT-X 2.4.0 introduces Q65, a digital protocol designed for minimal two-way QSOs over especially difficult propagation paths. On paths with Doppler spread more than a few Hz, the weak-signal performance of Q65 is the best among all WSJT-X modes. Q65 is particularly effective for tropospheric scatter, rain scatter, ionospheric scatter, and EME on VHF and higher bands, as well as other types of fast-fading signals.
Q65 uses 65-tone frequency-shift keying and builds on the demonstrated weak-signal strengths of QRA64, a mode introduced to WSJT-X in 2016. Q65 differs from QRA64 in the following important ways:
A new low-rate Q-ary Repeat Accumulate code for forward error correction
User messages and sequencing identical to those in FST4, FT4, FT8, and MSK144
A unique tone for time and frequency synchronization. As with JT65, this “sync tone” is readily visible on the waterfall spectral display. In addition, Q65 provides a sensitive “sync curve” near the bottom of the waterfall window. Unlike JT65, synchronization and decoding are effective even when meteor pings or other short signal enhancements are present.
Optional submodes with T/R sequence lengths 15, 30, 60, 120, and 300 s and different tone spacings.
A new, highly reliable list-decoding technique for messages that contain previously copied message fragments. No use is made of a callsign database.
Highly effective message averaging for situations where single transmissions are too weak to be decoded.
A “multi-decode” option that attempts to decode all Q65 signals in the received passband.
WSJT-X is a computer program designed to facilitate basic amateur radio communication using very weak signals.
WSJT-X Version 2.4 offers 13 different protocols or modes: FT4, FST4 and FST4W, FT8, JT4, JT9, JT65, Q65, QRA64, ISCAT, MSK144, WSPR, and Echo. The first eight are designed for making reliable QSOs under weak-signal conditions. They use nearly identical message structure and source encoding. JT65 and QRA64 were designed for EME (“moonbounce”) on the VHF/UHF bands and have also proven very effective for worldwide QRP communication on the HF bands
The WSJT Development Group has announced the general availability release of WSJT-X Version 2.3.0.
WSJT-X 2.3.0 General Availability release adds the new modes FST4 and FST4W along with many defect repairs. See summaries below and for the prior release candidates (2.3.0-rc1 through -rc4) of this version for details.
- FST4/W: Disable envelope shaping at start and end of transmission when environment variable FST4_NOSHAPING=1. Works for fst4sim too.
- Add time stamp to error message boxes to aid diagnosis.
- Repair a defect that caused crashes at start up for some macOS Big Sur users.
- Repair a defect that could cause the jt9 slow mode decoder process to exit incorrectly with a failure status.
- Updated CTY.DAT file.
WSJT-X: New in Version 2.3.0
WSJT-X 2.3.0 introduces FST4 and FST4W, new digital protocols designed particularly for the LF and MF bands. Decoders for these modes can take advantage of the very small Doppler spreads present at these frequencies, even over intercontinental distances. As a consequence, fundamental sensitivities of FST4 and FST4W are better than other WSJT-X modes with the same sequence lengths, approaching the theoretical limits for their rates of information throughput. The FST4 protocol is optimized for two-way QSOs, while FST4W is for quasi-beacon transmissions of WSPR-style messages. FST4 and FST4W do not require the strict, independent phase locking and time synchronization of modes like EbNaut.
The new modes use 4-GFSK modulation and share common software for encoding and decoding messages. FST4 offers T/R sequence lengths of 15, 30, 60, 120, 300, 900, and 1800 seconds, while FST4W omits the lengths shorter than 120 s. Submodes are given names like FST4-60, FST4W-300, etc., the appended numbers indicating sequence length in seconds. Message payloads contain either 77 bits, as in FT4, FT8, and MSK144, or 50 bits for the WSPR-like messages of FST4W. Message formats displayed to the user are like those in the other 77-bit and 50-bit modes in WSJT-X. Forward error correction uses a low density parity check (LDPC) code with 240 information and parity bits. Transmissions consist of 160 symbols: 120 information-carrying symbols of two bits each, interspersed with five groups of eight predefined synchronization symbols.
We recommend that on the 2200 and 630 m bands FST4 should replace JT9 for making 2-way QSOs, and FST4W should replace WSPR for propagation tests. Operating conventions on these LF and MF bands will eventually determine the most useful T/R sequence lengths for each type of operation.
WSJT-X is a computer program designed to facilitate basic amateur radio communication using very weak signals.
WSJT-X Version 2.3 offers ten different protocols or modes: FT4, FST4 and FST4W, FT8, JT4, JT9, JT65, QRA64, ISCAT, MSK144, WSPR, and Echo. The first eight are designed for making reliable QSOs under weak-signal conditions. They use nearly identical message structure and source encoding. JT65 and QRA64 were designed for EME (“moonbounce”) on the VHF/UHF bands and have also proven very effective for worldwide QRP communication on the HF bands
Make and automatic antenna tuner based on Arduino and using economic card. This ATU Project can be installed outdoors and controlled remotely by an rs485 link
UK based manufacturer of digital mode PC fully isolated interfaces. Includes several types of interfaces including USB interfaces for CW and Digital modes
How to improve your transmitting antennas for very low solar activity periods, vertically polarized 160 meter antennas, horizontally polarized 80 to 10 meter antennas, single or stacked yagis, multi-tower stations
Tuning into the airwaves for new and interesting transmissions has fascinated enthusiasts since the very earliest days of radio. As a result of advances in computer and radio technology, the equipment packed radio rooms of the past are now replaced by scanning receivers sometimes just the size of a mobile phone. What can radio receivers/scanners pick up? What types of radio receivers/scanners are there? What can and cannot be monitored legally? Best practice when using a radio receiver/scanner
An home made VNA made with Arduino Nano. This project features an LCD display 4×20 works from 1 MHz to 60MHz, can use bluetooth connection with Blue VNA android app.
A true detective story about a interesting repair project, putting back to life a malfunctioning HP 8753C VNA that was rebooting after startup with noise and clicking sounds produced by the attenuator and switch relays.
A complete guide to install and configure a raspsberry pi for amateur radio usage. In includes from preparing a SD card, installing the operative system, configuring the Pi, and installing all ham applications you will ever need.
This is the antenna for you guys who want to get on HF effectively, and haven’t too much space or cash to throw around. Actually, it’s a design from ZS6BKW (aka G0GSF), similar to the G5RV, but it actually resonates on five bands, (well 6, actually) and doesn’t rely on a tuner (ATU) to make it work.
Getting Started on the Magic Band is a very exaustive article about operating the six meters band. It covers several aspects of operations, techniques, tips and guidelines on getting started on the six meters band.
WsprDaemon is a robust application for Linux systems that decodes Weak Signal Propagation Reporter (WSPR) signals, operates with networked KiwiSDRs, Includes baseband audio input option, provides a reliable reporting function to the wsprnet.org database
