#freedv — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #freedv, aggregated by home.social.
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Very cool - FlexRadio 800 series (and Aurora) now support installing and running the #freedv waveform on-device.
https://github.com/drowe67/freedv-gui/blob/master/src/integrations/flex/README.md
I never expected to be able to run a container directly on my #flexradio. Doesn't look like Marcus #smartsdr supports this yet but can't imagine it'll be far behind.
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Very cool - FlexRadio 800 series (and Aurora) now support installing and running the #freedv waveform on-device.
https://github.com/drowe67/freedv-gui/blob/master/src/integrations/flex/README.md
I never expected to be able to run a container directly on my #flexradio. Doesn't look like Marcus #smartsdr supports this yet but can't imagine it'll be far behind.
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Our grantees at FreeDV have recently released FreeDV 2.3.0. Check out their related blog post for more details: https://freedv.org/freedv-2-3-0-released/. #ardc #freedv #ardcgrantees #amateurradio #digitalcommunications
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Our grantees at FreeDV have recently released FreeDV 2.3.0. Check out their related blog post for more details: https://freedv.org/freedv-2-3-0-released/. #ardc #freedv #ardcgrantees #amateurradio #digitalcommunications
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CW: Amateur Radio Ramblings
I've decided to go with the "Glutton For Punishment" option.
I'm going to give FreeDV another go.
I'm reinstalling Linux Mint on an ancient Acer Aspire One netbook.
It won't matter if FreeDV messes up this box because it's been in a cupboard for months anyway
It's got a tiny 10 inch screen which could make operating a slight challenge though if it does work.Fingers crossed
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CW: Amateur Radio Ramblings
I've decided to go with the "Glutton For Punishment" option.
I'm going to give FreeDV another go.
I'm reinstalling Linux Mint on an ancient Acer Aspire One netbook.
It won't matter if FreeDV messes up this box because it's been in a cupboard for months anyway
It's got a tiny 10 inch screen which could make operating a slight challenge though if it does work.Fingers crossed
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I’ve been attempting to get the #freedv AppImage for #flexradio running on the RPi4 I use as my Allstar Node. I couldn’t get it to decode.
Managed to get it running on my #uconsole and received ON4LX operating on #qo100.
Spoiler: there is a firewall on the Allstar Node.
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I’ve been attempting to get the #freedv AppImage for #flexradio running on the RPi4 I use as my Allstar Node. I couldn’t get it to decode.
Managed to get it running on my #uconsole and received ON4LX operating on #qo100.
Spoiler: there is a firewall on the Allstar Node.
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https://www.facebook.com/share/v/17eoQUTFhm/
#hamradio station py2rn near Sao Paolo receives my #FreeDV transmission over #QO100 satellite
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https://www.facebook.com/share/v/17eoQUTFhm/
#hamradio station py2rn near Sao Paolo receives my #FreeDV transmission over #QO100 satellite
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Yet another lovely #qso with Helmut dc6ny in Bavaria
He hit SNR 7 with his home brew trx and 80 cm dish!
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Yet another lovely #qso with Helmut dc6ny in Bavaria
He hit SNR 7 with his home brew trx and 80 cm dish!
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Had a short initial foray into #FreeDV yesterday- I only have a very low power antenna for 40m in the loft, so didn’t succeed with transmitting but the audio quality (on moderately high SNR signals) is impressive! The upper HF bands were empty, nobody listening, so didn’t try transmitting with moderate power there.
Wonder what the “it’s not real radio” blowhards will make of it? ;)
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Had a short initial foray into #FreeDV yesterday- I only have a very low power antenna for 40m in the loft, so didn’t succeed with transmitting but the audio quality (on moderately high SNR signals) is impressive! The upper HF bands were empty, nobody listening, so didn’t try transmitting with moderate power there.
Wonder what the “it’s not real radio” blowhards will make of it? ;)
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One more attempt at #FreeDV tomorrow then I give up.
I got a brief blast of decoded audio on 60m this afternoon, but then the Linux laptop decided to unilaterally change the audio settings.
I think the FreeDV program is sound, but there seems to be something weird going on between my TS590s and the laptop.It doesn't help that there's not a lot of activity to test the set up with
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One more attempt at #FreeDV tomorrow then I give up.
I got a brief blast of decoded audio on 60m this afternoon, but then the Linux laptop decided to unilaterally change the audio settings.
I think the FreeDV program is sound, but there seems to be something weird going on between my TS590s and the laptop.It doesn't help that there's not a lot of activity to test the set up with
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I think a #HamRadio project for the new year will be getting into #FreeDV. Thanks to https://evoham.com for beginner guides, and Steve Stroh @n8gnj for the continually interesting Zero Retries newsletter (and pointing out EvoHam) - Amateur Radio for the 21st Century, not the old legacy stuff from the 1950s! (Although I do hope to do some of that too…)
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I think a #HamRadio project for the new year will be getting into #FreeDV. Thanks to https://evoham.com for beginner guides, and Steve Stroh @n8gnj for the continually interesting Zero Retries newsletter (and pointing out EvoHam) - Amateur Radio for the 21st Century, not the old legacy stuff from the 1950s! (Although I do hope to do some of that too…)
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I'm looking at FreeDV as something new to try in #AmateurRadio.
I'm waiting for a USB headset because I currently haven't got a way of getting the audio out of the laptop while FreeDV is running.
I seem to have got the rig control running OK, and I think I'm capturing signals (but activity is limited)It looks promising, although as with all digimodes the number of users will be a limiting factor.
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I'm looking at FreeDV as something new to try in #AmateurRadio.
I'm waiting for a USB headset because I currently haven't got a way of getting the audio out of the laptop while FreeDV is running.
I seem to have got the rig control running OK, and I think I'm capturing signals (but activity is limited)It looks promising, although as with all digimodes the number of users will be a limiting factor.
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Wonder how I can do effective snooping on bluetooth serial text communication.
The #wireshark does not seem to show device mac address of a remote device, so impossible to filter.
#btmon partial success.
I want to see on the wire / in the air what #wsjtx does successfull over /dev/rfcommX and compare to what fails from #FreeDV
#hamradio motivation ...
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Wonder how I can do effective snooping on bluetooth serial text communication.
The #wireshark does not seem to show device mac address of a remote device, so impossible to filter.
#btmon partial success.
I want to see on the wire / in the air what #wsjtx does successfull over /dev/rfcommX and compare to what fails from #FreeDV
#hamradio motivation ...
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Not that I am fond microsoft github, but would like to see /dev/rfcomm* serial usb over bluetooth devices in #FreeDV
They just work in #wsjtx
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Not that I am fond microsoft github, but would like to see /dev/rfcomm* serial usb over bluetooth devices in #FreeDV
They just work in #wsjtx
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Really impressed by FreeDV RADE v1 audio quality on HF with low power.
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Digital Voice Transmission - FreeDV
"Radio Autoencoder (RADE) technology is a new approach to sending speech over HF radio. It combines Machine Learning (ML) with classical DSP to send high quality speech over HF radio at SNRs as low as -2dB. The speech signal has an audio bandwidth of 8kHz, but the RADE V1 signal requires just 1500Hz of RF bandwidth. The Peak to Average Power Ratio (PAPR) is less than 1dB, allowing efficient use of transmitter power amplifiers."
Read more: https://freedv.org/radio-autoencoder/I've listen to a few transmissions and the clarity at a signal to noise ratio of -2dB is utterly remarkable. It's just a shame that the bands are almost devoid of digital voice, bar a few minutes per day.
A quick look at the FreeDV reporter page shows that everyone is listening, and almost no-one is transmitting. How does that work?
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Digital Voice Transmission - FreeDV
"Radio Autoencoder (RADE) technology is a new approach to sending speech over HF radio. It combines Machine Learning (ML) with classical DSP to send high quality speech over HF radio at SNRs as low as -2dB. The speech signal has an audio bandwidth of 8kHz, but the RADE V1 signal requires just 1500Hz of RF bandwidth. The Peak to Average Power Ratio (PAPR) is less than 1dB, allowing efficient use of transmitter power amplifiers."
Read more: https://freedv.org/radio-autoencoder/I've listen to a few transmissions and the clarity at a signal to noise ratio of -2dB is utterly remarkable. It's just a shame that the bands are almost devoid of digital voice, bar a few minutes per day.
A quick look at the FreeDV reporter page shows that everyone is listening, and almost no-one is transmitting. How does that work?
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Just finished my first FreeDV RADEV1 QSO on 40 meters.
Really impressive audio without any background noise.
Definitely worth trying and promoting!
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Playing around with FreeDATA (https://freedata.app/) app on 40 meters. What a nice modern application, can operate keyboard-to-keyboard QSO's and leave messages from a remote PC using a webbrowser. Seems like a nice modern alternative to #JS8CALL. It's based on the open source #Codec2 which is also used for #FreeDV and #M17. No need for proprietary software modems like #VARA anymore. If you like stuff like #VarAC or #JS8 give this a try! #hamradio #ham #freedata
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So it looks like #FreeDV had a VHF mode at one time, but support has since been dropped. I wonder why?
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I know there are several open source digital voice modes out there. I'm a big fan of open source initiatives along these lines.
Help me complete the picture:
* Below HF - ?
* HF - FreeDV
* VHF - ?
* UHF - M17
* Above UHF - M17What open source digital voice modes exist for these other bands, if any? #M17 #FreeDV #hamradio