开云体育

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

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
??? >>? ? ?give you my
??? >>? ? ?>? ? ?>> engineer's number.
??? >>? ? ?>? ? ?>> ????? If you want to build a strong life, I'll
??? introduce
??? >>? ? ?you to my
??? >>? ? ?>? ? ?>> carpenter."
??? >>? ? ?>? ? ?>> ?????? Lebron and Heather Lackey
??? >>? ? ?>? ? ?>>
??? >>? ? ?>? ? ?>>
??? >>? ? ?>? ? ?>>
??? >>? ? ?>
??? >>
??<
<>
??? >>
?<
<>>
??? >>? ? ?>
??? >>
??<
<>
??? >>
?<
<>>>>
??? >>? ? ?>? ? ?>> Virus-free.www.avg.com
??? <> <
??? <>>
??? >>? ? ?<
??? <> <
??? <>>>
??? >>? ? ?>? ? ?>>
??? >>? ? ?>
??? >>
??<
<>
??? >>
?<
<>>
??? >>? ? ?>
??? >>
??<
<>
??? >>
?<
<>>>>
??? >>? ? ?>? ? ?>>
??? >>? ? ?>? ? ?>>
??? >>? ? ?>? ? ?>>
??? >> ?<#m_3994487950984645757_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
??? >>? ? ?>? ? ?>>
??? >>? ? ?>? ? ?>>
??? >>? ? ?>? ? ?>
??? >>? ? ?>? ? ?>
??? >>? ? ?>? ? ?>
??? >>? ? ?>? ? ?>
??? >>? ? ?>? ? ?>
??? >>? ? ?>
??? >>? ? ?>
??? >>? ? ?>
??? >>? ? ?>
??? >>? ? ?>
??? >>? ? ?>
??? >>
??? >>
??? >>
??? >>
??? >>
??? >
??? >