FreeDV - In action with great trips
Автор: Amateur Radio Channel (VK3TBS)
Загружено: 2025-08-18
Просмотров: 4031
FreeDV in action with some great tips and examples for you, the amateur radio operator. In this video I talk to one of the people who is able to share the inside story how FreeDV came about and how it works.
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 Intro
02:01 VK3TPM
04:40 Summary
04:49 Mic Setting
05:28 Nets
06:05 Reporter
06:41 Where it's from
08:28 How it works
12:11 RADEV1
13:52 Next Version
14:30 PSK Reporter
14:55 Audio Setup
15:34 Easy Setup
16:42 Filter
17:16 Mic level
17:59 SNR
18:14 SSB v FreeDV
19:10 Recording
19:18 Displays
19:51 PSK
20:24 Net Time
20:34 Reporter
20:54 Another Test
21:11 VK3ALS
23:02 Messages
23:19 TX Atten..
24:29 Summary
24:40 Mic Level
25:51 Outro
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