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Easy to use logging and keying software for CW and SSB, for HF and VHF. Contains the unique synthesized voice keyer.

Building an amateur station for competitive radiosport involves a number of critical steps, regardless of the band or bands you focus on. These include, but are certainly not limited to: Station layout, Equipment interconnection and switching, Inter-station interference, Antenna selection. Radio interface with the logging program, CW and voice keyer integration, Rotator control

Connecting a MP3 Digital voice recorder to be used as a Voice Keyer with the Icom IC-703

Repeater operating is one of the most popular facets of amateur radio

This article describes the construction of a high performance transmitter and receiver for SSB (voice) communication covering the 14MHz (20 meters) high frequency amateur radio band with output range 15 to 20 watts and a top audio sound quality both on transmit and receive.

Operating Free DV, the open source digital voice codec for HF, allows any SSB radio to be used for low bit rate digital voice.

From somewhere in mediterranean

The Voice for Amateur Radio in Daviess County for 53 Years

A voice keyer with up to 60 seconds memory in total, A CW keyer using the famous N0XAS design, aka Picokeyer and a 4 channel sequencer

This FM wireless mike can transmit voice signals to any FM Radio receiver 100 meters away.

A compact voice keyer for Icom IC-7000

Repeaters in Finland

Vox recorder is activated by voice and sounds exceeding a threshold. It saves for every record a .caf file that you can play, delete or send by email. Useful for surveillance records, hamradio scanners, and many many other applications. You'll be surprised to hear what happens in an all night using Vox recorder.

AVRS info by WB4APR

Scan Antenna supply precision antennas to some of the world’s most advanced, market leading companies. Their antennas fit in satellite voice/data, mobile/wireless GSM, GPS, marine/land based radio and other specialty systems.

Heil Sound PR-35 vs Heil Sound PR-781 vs Electro Voice Blue Cardinal by K4QKY

A numbers station, also known as a one-way voice link (OWVL), is a special type of unusual radio broadcast, generally on the Short Wave (SW) radio bands

VHF weather beacon based on raspberry pi. speed and direction of the wind, temperature, atmospheric pressure, are transmitted in voice every 15 minutes. In French

Article on how to make a Mode Digital Voice Modem Digital Repeater using a Rasperry Pi 3 and a MMDVM board

The vOICe Learning Edition can be used in combination with a regular oscilloscope, allowing blind users to hear any oscilloscope trace.

The BX-184 is a voice keyer developed by Olli DH8BQA designed to fit into the case of a Yaesu MH-31 microphone.

The website for VA3XPR is intended to provide users with information about the VA3XPR repeater, plus news and information related to ham radio digital voice communications.

DK8KW Longwave Information Slow-Voice, Transmitting compressed analog Audio Signals on LF

A voice keyer kit available on the marker in two models, BX-184 is the replacement PCB for those who already own an MH-31 microphone. Kit BX-184M includes an MH-31 besides the PCB for those not owning one yet.

A privately owned company, has a proven and successful record in the design and reliable implementation of Professional Mobile Radio (PMR) equipment and systems for voice and data communications.

Win-Test Contest Logger scripts for VGS-1 Voice keyer module for the TS-590 by DK5TX

This HOWTO explains in detail how you can use the Kenwood TS-590S USB, COM and ACC2 ports for digital operation, set up the radio for digital data and digital voice operation

The Swiss army knife for Digital Voice, the DVMEGA radio is basically a complete D-Star and DMR compatible hotspot

HF digital mode transmissions, voice transmissions in HF and VHF Bands collected in several XLS files by Relic Radio communications

Meeting point of radio amateurs associations from around the world where introduce and share their activities and experiences. It is about giving voice to all those independent radio clubs of any country interested in exchanging knowledge with the others.

The SM1000 allows you to run FreeDV without a PC. Connect the SM1000 to your SSB radio, and you now have Digital Voice (DV). You don’t have to buy a new radio to run Digital Voice! It’s based on a STM32F4 micro-controller, has a built in microphone, speaker amplifier, speaker, and transformer isolated interfaces to your radio.

A complete set of pages about the Yaesu FTDX3000 Yaesu transceiver, including USB Driver informations, voice keyer details, complete menu group informations, remote control and CAT control program, SDR Play and FTDX3000 configuration, firmware links and manuals

This construction project is for anyone wanting to give this popular little radio a voice of its own. This Speech synthesiser reads out the current frequency, mode and menu settings whenever they are changed via the front-panel controls

AllStarLink is a network of Amateur Radio repeaters, remote base stations and hot spots accessible to each other via Voice over Internet Protocol. AllStarLink runs on a dedicated computer (including the Rasperry Pi) that you host at your home, radio site or computer center. It is based on the open source Asterisk PBX running our app_rpt application.

System Fusion is Yaesu’s implementation of Digital Amateur Radio, utilizing C4FM 4-level FSK Technology to transmit digital voice and data over the Amateur radio bands

Collection of modifications for the Retevis RT3, a monoband handheld transceiver for DMR (digital voice) and analog FM. It is almost identical to the Tytera MD-380.

System Fusion is a digital communications mode for voice and data, including pictures. It utilizes a customized, yet open, C4FM FDMA standard. An introduction to Yaesu System Fusion by Wireless Society of Southern Maine

Build a Ham Radio Voice Keyer for the Backpack

Pi-Star is a software image built initially for the Raspberry Pi. The design concept is simple, provide the complex services and configuration for Digital Voice on Amateur radio in a way that makes it easily accessible to anyone just starting out, but make it configurable enough to be interesting for those of us who cannot help but tinker.

Learn about the LinHT handheld SDR radio, an open-source, Linux-based project that is shaking up the ham radio and SDR communities. This guide is perfect for hams new to digital voice and interested in exploring experimental radio platforms. Discover what sets LinHT apart from traditional handheld radios, how it leverages SDR technology and Linux operating system, and why it's generating buzz in the ham radio landscape. Dive into the world of software-defined handheld radios with this beginner-friendly overview.

FreeDV uses an audio codec as a software based modem to decode and encode the voice and text data from your computer. The data is encoded and then is transmitted over the HF radio using AF signals that can then in turn be decoded by the receiving station.

This describes a homebrew End-Fed Half-Wave (EFHW) antenna for low power SOTA, Parks and Field Day events. Made with readily available materials, it offers a resonant antenna in 40/20/15/10m bands without requiring an antenna tuner. The 19.8m long radiator wire in an inverted V configuration achieves VSWR below 1.5:1 for voice. CW users might need to adjust the length. Details include materials list, fabrication of the end insulator, and the 49:1 impedance transformer construction with a circuit diagram.

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.

QRP is a way of operating that involves using low power transmitters, that are no more than 5 Watts for Morse or data modes, or 10 Watts pep for voice. Introduction to QRP operations

A voice keyer for Morse Code written for Arduino

Automated voice announcements project built to have an automated way to deliver club announcements via the repeater network.

The Icom series of radios from the IC-746 Pro on to the latest 7800 radios have a 4 memory digital voice and CW keyer built into the radio. This external Keypad, based on the official Icom circuitry can considerably help you on using the voice and cw keyer

Let this microprocessor controlled MFJ Contest Voice KeyerTM call CQ, send your call and do contest exchanges for you in your own natural voice

M17 is a community of open source developers and radio enthusiasts. We are building understandable systems in support of the hackers and experimenters' history of ham radio. M17 is developing open source hardware, software, and offers a complete digital radio protocol for data and voice, made by and for amateur radio operators. M17 voice mode uses the free and open Codec 2 voice encoder.