Ashhar,
This is the TNC using FreeDV modem:
The link you sent was just an experiment 3 years ago, totally non-maintained and non-functional.
Rafael
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On 4/26/23 22:37, Ashhar Farhan wrote:
The freedv is an ofdm data modem and a voice codex together. Freedv modem can provide upto 1700 bps of data comm, they also have a tnc.
On Thu, Apr 27, 2023, 1:00 AM Rafael Diniz <rafael@...> wrote:
VARA works on the sBitx, through box86 emulator + wine.
I'm still optimizing my setup here for low latency, but basically
just
use the attached ALSA setup (should work with ARDOP and other
modems too):
And so use VARA much like the same way you'd use fldigi with sbitx
software for doing the SSB part and all radio controls. I still could
not do a sbitx <-> sbitx test as one of them got crazy today. My only
concert is latency (TNC <-> alsa loopback <-> sbitx <-> Wolfson) ,
but
reading Ashhar code, I think we'll be fine, but need to test.
73's
Rafael
On 4/26/23 21:54, Dave New, N8SBE wrote:
>
> FreeDV and VARA HF are for two completely different use cases.
>
> FreeDV is for digital voice transmission, and VARA HF is hands-down
> the favorite for sending Winlink email messages for emergency
> communication and EMCOMM exercises.
>
> I use Winlink with VARA HF modem several times a week to
send/receive
> test EMCOMM messages - Google "Winlink Wednesday" for one such
weekly
> exercise - using my home station (Elecraft K3s) on various HF bands
> (mainly 80M and 40M).? Yes, I know that VARA is closed-source,
but it
> is supported by a single developer and the one-time license fee
> supports his efforts.? And it replaces the VERY expensive hardware
> PACTOR modems giving equivalent or better performance, so
government
> SHARES stations here are flocking to it to save money, and it
provides
> the means for hams to interoperate with those stations via the CMS
> Relay network without having to spend thousands on a PACTOR modem.
>
> I know that VARA (and Winlink) are Windows-only applications,
but if
> they can be made to work on the sBitX, if would be very cool.?
There
> was a recent WAVETALKERS zoom session specifically addressing the
> issue of lightweight portable Winlink stations for EMCOMM use, so
> there is certainly interest in this area.
>
> 73,
>
> -- Dave, N8SBE
>
> On 2023-04-24 03:43, Ashhar Farhan wrote:
>
>> Rafael,
>> I would recommend sticking to freedv. It will eventually become
>> better, being open source. Us using it will provide it with
even more
>> patronage.
>> If we have a thousand radios of sbitx lineage using it,
something is
>> bound to give.
>> Given enough number of eyeballs, all bugs are shallow.
>> - f
>>
>> On Mon, Apr 24, 2023, 1:09 PM Rafael Diniz
<rafael@...>
>> wrote:
>>
>>? ? ?Hi Ashhar, yes, it works, but the performance is not yet up to
>>? ? ?par with
>>? ? ?VARA's. This is the project's link (which uses David Rowe's
modem):
>>
>>
>>? ? ?We are working on a modem too.
>>
>>? ? ?73's
>>? ? ?Rafael
>>
>>? ? ?On 4/24/23 10:36, Ashhar Farhan wrote:
>>? ? ?> Rafael,
>>? ? ?> Have you tried the freedv modem? Perhaps we can integrate it
>>? ? ?directly
>>? ? ?> into the sbitx hut-of-stack.
>>? ? ?> - f
>>? ? ?>
>>? ? ?> On Mon, Apr 24, 2023, 12:52 PM Rafael Diniz
>>? ? ?<rafael@...>
>>? ? ?> wrote:
>>? ? ?>
>>? ? ?>? ? ?Ooops, the second link is the RPI4 image (which I
used just as
>>? ? ?>? ? ?reference):
>>? ? ?>
>>
>>? ? ?>
>>? ? ?>
>>? ? ?>? ? ?On 4/24/23 10:20, Rafael Diniz wrote:
>>? ? ?>? ? ?> I'm working on having VARA running on the sBitx. Having
>>? ? ?all the
>>? ? ?>? ? ?setup
>>? ? ?>? ? ?> running on the Pi 4 is done - all runs on top of
box86 +
>>? ? ?wine. I'm
>>? ? ?>? ? ?> still trying to sort out the sbitx loopback audio
routing
>>? ? ?to VARA.
>>? ? ?>? ? ?>
>>? ? ?>? ? ?> Please refer to:
>>? ? ?>? ? ?>
>>? ? ?>
>>
>>? ? ?>
>>? ? ?>? ? ?>
>>? ? ?>? ? ?> and:
>>? ? ?>? ? ?>
>>? ? ?>
>>
>>? ? ?>
>>? ? ?>? ? ?>
>>? ? ?>? ? ?>
>>? ? ?>? ? ?> Rafael
>>? ? ?>? ? ?>
>>? ? ?>? ? ?> On 4/23/23 20:28, Ashhar Farhan wrote:
>>? ? ?>? ? ?>> No clue, Ray.
>>? ? ?>? ? ?>> I haven't done much work on this. Others have some
>>? ? ?experience
>>? ? ?>? ? ?in the
>>? ? ?>? ? ?>> group. Perhaps they can answer?
>>? ? ?>? ? ?>>
>>? ? ?>? ? ?>> On Sat, Apr 22, 2023, 7:51 PM Ray, W4BYG
<w4byg@...>
>>? ? ?wrote:
>>? ? ?>? ? ?>>
>>? ? ?>? ? ?>> ??? Farhan,
>>? ? ?>? ? ?>> ??? What would it take to interface the above with the
>>? ? ?new V2?
>>? ? ?>? ? ?>> ??? Ray, W4BYG
>>? ? ?>? ? ?>>
>>? ? ?>? ? ?>> ??? -- ??? "If you want to build a strong house, I'll
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introduce
>>? ? ?you to my
>>? ? ?>? ? ?>> carpenter."
>>? ? ?>? ? ?>> ?????? Lebron and Heather Lackey
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