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CW decoder using a PIC microcontroller. This is a morse code decoder made using a PIC(16F88) microcontroller, this project supports displays with multiple controller chips

This project enhances Arjan te Marvelde's uSDR-pico by integrating a waterfall display feature. By adding an ILI9341 240x320 2.4" TFT display and modifying the software, the goal is to provide a panadapter to the existing transceiver. Initially developed with Visual Studio, the code was later migrated to Arduino IDE for Raspberry Pi Pico compatibility. The focus remains on preserving the original software, primarily enhancing the dsp.c file for waterfall implementation.

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

DXPSK and SMARTPSK are freeware Windows PSK31 software tools capable to send and recive even multiple tracks of PSK31 signals. SMARTPSK is the improved version of DXPSK capable to display up to 25 tracks.

Time Mapper UHD is a versatile mapping and time visualization program offering multi-satellite viewing with frequency display and unique country-pairs for PskReporter data. It features live feeds from logging programs and can plot ADIF files. Ideal for schools, offices, or amateur radio stations, it provides customizable 4K or HD world clock displays with over 60 map layers, including ham radio zones and natural features. The program supports various time functions and can import logs for detailed analysis. It runs on Windows 10 or 11 and offers a 30-day free trial.

Web site and blog that reviews equipment, goes over safety, and display projects being built. Includes Yaesu FT-891 and Ameritron RCS-10 Review, a 555 Morse Code Practice Oscillator, and and arduino based Morse Code Practice Oscillator

An technical page on coaxial cables that describes what coax cables are, how do coax cables works, what are RG cables and difference with several coax cable types, what they are used for, connector types and cable sizes

World Time Zone is an online quick reference chart that displays the world time zones in detail. DST is also indicated by yellow markers on the map. UTC difference is marked with different colors, and if you point and click will show up area details

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.

The weather station described here uses a TTGO v3 1.6.2 module and various sensors. It displays the data on an OLED screen and transmits them among a choice of protocols to the APRS, APRS-IS, Wunderground servers or via an MQTT broker. APRS data is transmitted on 433.775 MHz (can be changed) using the LoRa protocol. APRS beacons picked up by iGate gateways are then transmitted to APRS servers.

This project revisits a minimalist software-defined radio (SDR) receiver built using a Raspberry Pi Pico, now optimized for simplicity and affordability. Designed for breadboard assembly with through-hole components, the receiver covers 0–30MHz, supporting CW, SSB, AM, and FM modes with an OLED display and spectrum scope. Key improvements include enhanced frequency accuracy, reduced op-amp saturation, and lower-cost components. Powered by three AAA batteries, it delivers standalone operation for global signal reception. Ideal for hobbyists, the design fosters experimentation and is documented with firmware and schematics available online.

The Trainer is based on a simple modular built STEM/game platform, plus newly developed interactive software,it contains six training routines, easy to advance, and consists of various learning aids. You select them from a menu. Feedback for menu selection is given audibly and through an LED display and serial monitor.

Quansheng Dock v0.32.22q is a specialized software application designed for remote operation of Quansheng UV-K5 (and equivalent) handheld radios using a programming cable. The software enables various advanced functionalities and features for these radios, enhancing their usability and flexibility. Quansheng Dock is a Windows application designed for remote control of Quansheng UV-K5 handheld radios using a programming cable. It offers enhanced features such as advanced preset and channel scanning, customizable LCD displays, spectrum analysis, and audio passthrough. The software requires firmware version 0.32.21q and the .NET 6 runtime. An AIOC cable is recommended for full audio functionality. Installation is straightforward and portable.

SDR control for FlexRadio Signature Series Rig for Apple Mac. FT8 integration, External Software support, Several additional Tools, display as many panadapters and slices your Radio is capable of.

Check your RF power with an easy to read and build digital display

Learn how to build a QRP digital transceiver with Arduino, based on a project by Burkhard Kainka. This article covers the development process, including the source code, modifications made, and the addition of an OLED display for a more professional look. Discover the inner workings of the transceiver, from the receiver to the oscillator, and how components like the CD2003 are utilized. Explore the schematic design, the use of a PLL module Si5351A controlled by Arduino nano, and more. Ideal for hams looking to create their own digital transceiver for amateur radio operations.

This page describes an update to a project for a Power and SWR Meter for ham radio operators. The update includes a more powerful microcontroller, increased sampling rate, and improved display options. It explains how to use the new components and provides detailed instructions for building the updated meter. The page also offers alternative display options and includes the full source code for the firmware. Overall, this update enhances the functionality and performance of the Power and SWR Meter project, making it more versatile and user-friendly for hams looking to measure RF power and SWR in their radio setups.

FT8 Live is a specialized web-based tool designed for the real-time graphical visualization of amateur radio propagation spots. Leveraging the data infrastructure of the PSK Reporter MQTT stream, the platform provides immediate situational awareness for radio operators. While the tool’s nomenclature references the dominant FT8 digital protocol, it offers broad compatibility, displaying spots from various other modes including CW, WSPR, and JT65. Distinct from the official PSK Reporter map, FT8 Live focuses exclusively on live data streams, eschewing historical archiving to prioritize current signal activity. A defining feature of the platform is its integration with the Summits on the Air (SOTA) API. This functionality facilitates "SOTA chasing" by automatically cross-referencing transmitting callsigns with SOTA alerts; a station is identified as an activator if the spot correlates with a scheduled alert within an eight-hour window. The tool represents a collaborative technical effort, featuring a user interface developed by Arron (ZL1AN), utilizing core data from Philip Gladstone (N1DQ), and stream delivery via Tom Stanton (M0LTE).

he LoRa-APRS-iGate was developed in cooperation with the Austrian HAM Radio Association. With this software and the LoRa GW Shield, devices transmitting on LoRa, frequency 433 MHz can be integrated into the APRS network. The transmitter can then be displayed on the website https://aprs.fi.

The article discusses running multiple instances of WSJT-X on a Windows PC, allowing users to manage and monitor multiple radios or data streams simultaneously. It explains how to set up additional WSJT-X instances, particularly for users with radios like the IC-9700, enabling monitoring of different bands or sub-bands. The setup process involves creating shortcuts, modifying properties to specify unique rig names, and ensuring the sound card supports dual-channel audio for simultaneous decoding. It also highlights potential issues related to processing power when running multiple instances and using several displays.

Home made free utility can be useful to monitor which is the RX and which is the TX VFO and the correspondig frequencies. Works with Yaesu FT-5000.

SkyRoof is an open-source, 64-bit Windows application designed for amateur radio operators and satellite enthusiasts, combining satellite tracking and Software Defined Radio (SDR) functionality in a unified platform. The software provides real-time satellite tracking, pass predictions, and visual representations through Sky View, Earth View, and Timeline displays. It features an SDR-based waterfall display covering VHF/UHF satellite segments with Doppler-corrected frequency scales, automatic satellite labeling, and visual tuning capabilities. SkyRoof supports various SDR devices (Airspy Mini, SDRplay, RTL-SDR), external transceiver CAT control, and antenna rotator integration. The application automatically downloads satellite data from SatNOGS and other sources, offers voice announcements for satellite passes, and includes comprehensive frequency control with Doppler tracking, manual corrections, and RIT functionality for enhanced satellite communication operations.

This Arduino project explores long-range RF communication using EBYTE E32 1W LoRa modules (either E32-915T30D or E32-900T30D) paired with ESP32 microcontrollers featuring OLED displays. The setup leverages the modules' Semtech SX1276 chip with amplifier to achieve up to 1W transmission power—significantly more than the chip alone provides. Unlike other LoRa implementations, these modules include a microcontroller that simplifies interface through UART rather than SPI. The documented implementation includes proper wiring between components and Arduino code that configures the module, displays received messages on the OLED screen, and transmits messages every two seconds while keeping power consumption manageable.

This article describes an upgrade to the Kestrel transceiver, replacing its LCD display with a 0.91-inch OLED screen for improved sound quality. VFO boards from Denys VK3ZYZ were integrated, particularly a Nano VFO board. The author shares details about the setup and the resulting enhancements, along with images of the modified components. The transceiver is now optimized for various frequencies and operates at a power output of approximately 120 W pep. More information about the boards can be found on the provided website.

This page by Basu (VU2NSB) presents automatically rendered antenna bearings with geodesic paths projected on a rectangular map. ch geodesic great circle path displayed on the map originates from your location that is derived from your Internet IP address. Therefore the Antenna Bearing Geodesic Map generated below should be accurate and relevant to your physical location (QTH). This map is an alternative to the Great circle Map.

Author proves a swift and enjoyable method for scanning and exhibiting cherished QSL cards in the shack. Scanning each QSL card and displaying them. A Modern Solution for Scanning and Showcasing Your Favorite QSL Cards

The article discusses the use of SDR# (SDR SHARP) software for SDR receivers, highlighting its Band Plan feature that visually represents RF spectrum allocations. The author modified SDR# to display detailed IARU HF band plans, creating three XML files for different IARU regions. These files include various operational modes and specific frequency allocations. Despite potential errors, the modifications aim to enhance the usability of SDR# for ham radio operators. The article includes references and download links for the XML files and IARU band plans.

The article explains how to adapt the YAESU FT817 transceiver so that it can be used to control Kuhne electronic transverters by transmitting at +12V via the coaxial wire. Different FT817 versions imply that some of the modification proposals that have been made so far don't apply to everyone. This tutorial provides a workaround that works with all FT817 models. It makes use of the external ACC socket, connecting an interior tiny circuit board to two thin wires. Follow ON7WP's instructions for using the rear antenna socket.

open890 is a web-based UI for the Kenwood TS-890S amateur radio, and features good usability, clean design, and high-speed bandscope/audio scope displays, among other features not available either on the radio itself, or in the ARCP remote control software. It is currently only designed to interface with the TS-890 via a LAN (or wifi) connection, and not a USB/serial connection. It may work with the TS-990, as the command set is very similar, but is currently untested.

A quick fix for a Yaesu FT-757GXII blank display

HamCrazy provides various personalized hats, name badges, those light up call sign displays, decals for cars, even case plates for Apache cases

Author is currently developing the HS4HF 4 Band HF Radio Transceiver with a 5.0-inch TFT display, following their previous HSM1 model. They are also working on the Radio HSDRA, an All Band SDR HF Radio Transceiver with unique features such as DSP Digital Modulation, 100W final power, automatic antenna tuner, and more. The development includes a wide 5.0-inch display, touch screen, and various advanced functionalities. Stay updated with the latest developments in the world of HAM radio with Hambuilder Team.

This project presents a compact QRP SWR meter featuring a 0.96" OLED display (128x64 pixels) for high-contrast visibility, updated with software fixes for display compatibility, improved low-power performance, and support for ATtiny45/85 microprocessors. A 1.3" OLED version accommodates visibility needs. Designed for HF QRP transmitters (3-15W), it uses a Breune coupler with germanium diodes for accurate SWR measurement. Powered by a AAA battery, the meter offers a standalone solution for impedance matching, with a 3D-printed enclosure enhancing portability.

This software enables remote monitoring of the Kenwood TS-590SG HF transceiver. Based on a lightweight, text-based monitor was developed using Python and ncurses. It connects via rigctld, displaying key metrics like frequency, power, SWR, and TX/RX state with minimal data usage. Ideal for low-bandwidth remote operation, it works over SSH or mobile data. The software is open-source under GPL v3.

The Beam project offers various features for controlling antenna rotators, including support for 2 or 4 line LCD displays, software or hardware clocks, open collector drives for azimuth and elevation control, and internal calculations for tracking the sun and moon. It can also track satellites and supports "Flip Mode" for inverted antennas. The 4-line version provides detailed readouts while the 2-line version offers a more compact display. New versions now support PWM and I2C H-bridge modes for adjustable speed control at the end of a move.

The DIY Power Meter project utilizes the _INA226_ high-side power monitoring chip, paired with an ATtiny85 microcontroller, to measure voltage, current, and power, displaying the results on a 128x32 OLED screen. The INA226 communicates via an I2C interface and is programmed with a calibration factor based on the shunt resistance and current register LSB. The project is designed to handle a maximum current of 500mA using a 0.16ohm shunt resistor, which can be adjusted to a 0.2ohm resistor, reducing the full-scale current range to 409mA with a resolution of **12.5uA**. The shunt resistor dissipates only 33mW at maximum current, making 1/4 watt resistors suitable for the setup. The PowerMeter.ino sketch configures the shunt resistance and maximum design current, automatically calculating the calibration factor. The project can be prototyped on a breadboard using an Arduino Uno, employing the Wire library for INA226 and OLED communication, and the u8g2lib library for the OLED display. For the ATtiny85 version, the Adafruit-TinyWireM and Tiny4kOLED libraries are used. The power meter is independently powered by a 3V CR2032 cell, with power switching options including manual switches or DC switched jacks. The low-side n-channel MOSFET switch configuration is tested but introduces voltage drop issues, making manual switching a more reliable option until a suitable DC switched jack is found. DXZone Technical Profile: INA226 | ATtiny85 | OLED Display | Power Meter

A versatile digital VFO design utilizing the Silicon Labs Si5351a oscillator chip and Nokia 5110/3310 graphics LCD display, operating from 1-160MHz with dual VFO capability. This microcontroller-based system, powered by an ATmega328 processor, features rotary encoder tuning, selectable step sizes, RIT control, and comprehensive band memory functions. Drawing less than 40mA at 3.3V, it significantly improves upon previous DDS designs' power consumption while offering advanced features like S-meter display, VFO lock, and programmable BFO/CIO offsets. The design achieves flexible functionality through simple hardware implementation and efficient software architecture, making it particularly suitable for QRP and portable amateur radio applications.

A web based cluster, based on spiderweb, allows filtering of dx spots for inclusion or exclusion, it interfaces with direct link to qrz.com for call sign search, show flag icons, it display charts and stats, link to muf maps, hamqsl solar conditions.

SunCalc is a tool that displays the movement of the sun and sunlight phases for a specific day and location. Users can adjust the sun's positions for sunrise, selected time, and sunset. The visual representation includes a curve showing the sun's trajectory and variations throughout the year. The tool also provides information on sunlight distribution during the day. SunCalc is useful for hams wanting to plan outdoor activities based on sunlight availability and position. Users can support the website's maintenance with a donation via PayPal.

This page provides updates, manuals, and firmware for the ADX - Arduino Digital Modes HF Transceiver. Learn about calibration procedures, band display bug corrections, and important notes on the SI5351 library. The content includes a detailed build manual and firmware updates for the ADX, a mono band (actually quad band) digital modes optimized HF transceiver based on Arduino. Stay informed about the latest releases, bug fixes, and enhancements to improve your experience with the ADX transceiver.

Improve the FRG-7 operation adding a home made digital frequency display. The author explains the challenges of using the analogue dial on the FRG-7 and how a digital display can be a useful solution. The page provides detailed information about the FRG-7's design and frequency conversion process. It also includes step-by-step instructions on how to connect an external frequency counter to display the kHz part of the frequency.

This article describes a DIY RF field strength meter project inspired by VK3YE's "The Squeakie" design. The device, built around a 555 timer IC and a 1N4148 diode, converts RF signal strength into audible tones with proportional pitch. The author enhanced the original design by adding volume control, LED indication, and digital readout capabilities using an Arduino Nano and LCD display. The completed project functions as a versatile RF detection tool, suitable for antenna testing and fox hunting, while offering multiple output methods: audio, visual, and digital measurement display.

After years of reliable performance, a 26-year-old Icom 706MK2G exhibited an unusual deviation during FM transmission, with the actual frequency being 10kHz off from the displayed frequency. Additionally, the power meter showed a sharp dip during transmission. Upon investigation, it was discovered that the FM VCO voltage adjust variable had become dirty and sluggish over time. By adjusting the variable capacitor and cleaning it with switch cleaner, the issue was resolved, restoring stable power output and accurate frequency transmission.

Learn how to build a VFO controller based on the Si5351 for ham radio operators. This controller consists of a PIC16F1825 and OLED SSD1306 display, with clock outputs for Tx, Rx, and IF frequencies. Features include calibration, RIT function, and the ability to tune frequencies separately. With step-by-step instructions and schematics, you can easily create your own VFO controller for your amateur radio setup.

The author discusses ways to display VHF and higher bands using a K3/10 as  transverter, NooElec Upconverter, SDR, and SDR-Console. He observed that the results were remarkable, with the tuned frequency visible at +/-100kHz. The K3 Interface Option (KXV3A) produces a buffered IF output at 8.213MHz, which is received using a NooElec NESDR SMArt SDR dongle and Ham It UP Upconverter. The SDR-Console program is utilized, with Omnirig synchronizing the SDR and K3. To configure the system, particular parameters are required, such as adjusting the IF frequency to 133.213MHz (125MHz + IF frequency) and inverting the spectrum. The Panadapter demonstrated ES activity at 10m, and modest software tweaks may be required for improved performance.

This is a basic Arduino project for decoding Morse code. This is an Arduino program that decodes Morse code from an I/O pin and display in to an LCD screen

List of Australia Amateur Radio Repeaters for 2m band by frequency with status, call, mods and location

The Icom IC-7851 features the capability to display two scopes simultaneously, providing frequency, mode, and antenna information for each receiver. Users can choose between vertical or horizontal display orientations, and the dual scopes are also viewable on a high-resolution monitor connected to the radio. Additionally, the IC-7851 allows for mouse connectivity, enabling users to click on signals displayed on either scope for quick tuning. A demonstration video is available showcasing this dual scope functionality.