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Domain: freedv.org

Stories and comments across the archive that link to freedv.org.

Comments · 5

  1. Re:Hams have always been fighting each other by Ol+Olsoc · · Score: 1 · on It's Ham Vs.Ham As Radio Amateurs Are In Conflict At ARRL (perens.com)

    CW and sideband voice are the lowest common denominator for communications. That's why everyone still uses it. There's definitely a "you first" attitude when it comes to doing anything new. Even the JT modes, which are far superior to CW for weak signal, are resisted. Codec 2 and FreeDV are actually better than SSB but because no one is willing to spend an hour figuring it out it languishes.

    http://qso.freedv.org/

    Better is so subjective. I've tried FreeDV, and I find it's best attribure is a dead quiet background. The voice quality? Not so much. It does what it does certainly, but pushes the bandwidth so hard that some of us have issues hearing it. But that dead silent digital background comes at a price.

    The digital cliff effect. You can hear a weak, scratchy, yet intelligible SSB signal much longer than a digital voice signal is giving you dead quiet silence.

    I like JT because of it's ability to work below the noise floor. I especially enjoy WSPR, a propagation tool version of the new modes.

    But SSB voice is remarkably efficient for an old school mode, and digital attempts at it don't really improve efficiency.

  2. Re:Hams have always been fighting each other by grumling · · Score: 1 · on It's Ham Vs.Ham As Radio Amateurs Are In Conflict At ARRL (perens.com)

    CW and sideband voice are the lowest common denominator for communications. That's why everyone still uses it. There's definitely a "you first" attitude when it comes to doing anything new. Even the JT modes, which are far superior to CW for weak signal, are resisted. Codec 2 and FreeDV are actually better than SSB but because no one is willing to spend an hour figuring it out it languishes.

    http://qso.freedv.org/

  3. Re:Whatever happened to codec2? by Argilo · · Score: 1 · on Interview: Ask Bruce Perens What You Will

    Bruce talks about the current state of codec2 in episode 139 of Ham Radio Now. You may also want to look at FreeDV, which you can use today to experiment with codec2 on the air.

  4. Re:MOS? by Bruce+Perens · · Score: 1 · on Three Videos On Codec2 and Open Hardware

    There is a video of the codec vs. SSB on the same radio link here. You can also take any radio links you have at hand and run the FreeDV program. This is an evening project to set up without a business case, and at least some companies appreciate people who take the initiative to do this sort of thing.

  5. Re:packet radio? by Bruce+Perens · · Score: 1 · on FCC Considering Proposal For Encrypted Ham Radio

    I have worked really hard to fix that D-STAR issue. See FreeDV and Codec2. We expect to have that on VHF/UHF soon.