What Is FreeDV? The Future of Digital Voice for

FreeDV is a free program that will transmit digital audio signals across the HF bands.

Are you a ham radio operator looking for clearer audio on HF bands? FreeDV is a cutting-edge digital voice mode that lets you transmit high-quality voice over HF using low bandwidth—and it’s completely open source. Unlike analog SSB (Single Side Band), FreeDV reduces noise, improves intelligibility, and works with standard HF radios and sound cards. In this post, we'll explore how FreeDV works, how to get started, and why it’s quickly becoming the go-to choice for HF digital voice communication.

FreeDV is a digital voice mode used by ham radio operators to transmit voice over HF (High Frequency) bands using low bandwidth. It replaces analog SSB (Single Side Band) with a compressed digital signal, improving clarity and reducing noise.

Their website is at https://freedv.org/

Their website says:
FreeDV technology is being developed by an international team of radio amateurs working together on Machine Learning, DSP, coding, design, user interface and testing. The project is managed by a 6 person Project Leadership Team (PLT).
Amateur Radio is transitioning from analog to digital, much as it transitioned from AM to SSB in the 1950s and 1960s. How would you feel if one or two companies owned the patents for SSB, then forced you to use their technology, made it illegal to experiment with or even understand the technology, and insisted you stay locked to it for the next 100 years? That’s exactly what was happening with digital voice. But now, hams are in control of their technology again!
FreeDV is unique as it uses 100% Open Source Software, including the speech codec. No secrets, nothing proprietary! FreeDV represents a path for 21st-century Amateur Radio where Hams are free to experiment and innovate rather than a future locked into a single manufacturer’s closed technology.

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00:00 Introduction
00:12 Website
01:25 Download
01:35 Frequencies
01:47 Further Help
02:00 History
02:12 Reporter
02:56 PSK
03:47 Flrig
03:51 Installing
04:26 Display
05:15 Easy Setup
05:45 Cat
06:36 Starting
07:06 Bandwidth
08:18 Mode
09:08 Starting it
09:34 Other Displays
10:05 Freqs
11:26 Squelch
13:00 Extra Tips
13:27 Almost
15:22 Calling CQ
16:03 Summary
16:27 Outro