[Ribbit-Users] http gateway and digipeater with Rattlegram and linux modem

[W4CKX]

Hello Ricardo.

Thank you for updating us about your repeater build.
I take note that you are using Rattlegram codec at the moment.
Know that Ahmet contributed Ribbit codec as an evolution of Rattlegram and
that all characteristics were improved across the board.
Alex has been working on a PWA for almost 2 months and we are now working
on the App UX.
Ribbit 1.0 beta is getting closer to release. (We are not committed to any
date, it will be released when it's ready)

When released, we will direct you to our ORI GitHub where you will find
Ribbit codec and can update your build.

Ribbit will support message metadata, user profiles, geolocation and
r/channels.

Let's stay in touch.

Pierre W4CKX

On Tue, May 7, 2024, 9:54 AM Ricardo Saiz via Ribbit-Users
<ribbit-users at lists.openresearch.institute> wrote:

> Hello,
>
> Not much activity in this list recently. Since my previous email I have
> installed and successfully run the linux modem
> https://github.com/aicodix/modem/ in a Raspberry version 1. I have left
> it up and working for several days. The script records sound clips from a 2
> meter radio, demodulates the data, shows the message in an http server:
> http://ea4gmz.hopto.org/OFDM.txt
> and repeats the same message a few seconds later. Fellow hams around
> Madrid have been able to exchange messages using Rattlegram in their
> smartphones and a fixed or handheld radio. It works through voice repeaters
> too. The modem software was modified for making the algorithm faster, maybe
> at the expense of some sensitivity. I have not noticed a significant loss
> of sensitivity, and now it takes less than 100 ms to process an audio clip
> and decode the message, even in a Rpi 1.
>
> This is a temporary and experimental system. I wish to engage more people
> into Rattlegram as an introduction to Ribbit.
>
>
>
>
>
>
> En miércoles, 7 de febrero de 2024, 23:25:23 CET, Ricardo Saiz <
> rsaizv at yahoo.es> escribió:
>
>
> Hello
> I have played a bit with the linux software
> https://github.com/aicodix/modem/ and the Android app. I wrote my
> experiencies in my blog, currently in spanish only:
> https://www.radiotecnia.es/rattlegram-experimentos-con-ofdm/
> https://www.radiotecnia.es/digi-repetidor-rattlegram/
> I modified YD1RUH's script for adding more information to the message log
> and also for repeating the received messages, so my station can act as a
> digipeater. This is a simple and very basic way of implementing some
> features that are announced for Ribbit. Looking forward to trying that app
> when it becomes available.
> regards
>
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