[Ribbit-Users] PC Program Possibility

Wed Jan 24 15:38:34 PST 2024

 Hello Matt
There is actually a PC software compatible with Rattlegram phone apps. It was developed by the same team. It is provided as source code for linux:https://github.com/aicodix/modem/It is a simple suite of commands for encoding and decoding data in wav files.
Then there is this simple and great idea based on thouse commands, that enables a simple chat in a linux PC, by means of bash scripts:https://github.com/YD1RUH/OFDM_chatI have compiled them in my computer and I was able to chat with fellow hams who used either the same program or Rattlegram. The PC program dumps all received messages in a txt file which can be manually or automatically processed.This Ribbit project is so interesting and I am sure it will be very successful when the programs become more developed, more capable or able to perform higher level tasks.

I guess you might have tried APRSdroid, which can send position and data in a way very much similar to your needs. It can use an external bluetooth tnc or audio from the phone. However it needs a proper audio cable and not acoustic coupling over the air.
regards

    En miércoles, 24 de enero de 2024, 22:12:46 CET, ribbit-users-request at lists.openresearch.institute <ribbit-users-request at lists.openresearch.institute> escribió:  

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Today's Topics:

  1. Re: Ribbit-Users Digest, Vol 4, Issue 1 (Ricardo Saiz)
  2. PC Program Possibility (Matt Miller)
  3. Re: PC Program Possibility (W4CKX)

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Message: 1
Date: Tue, 23 Jan 2024 22:45:58 +0000 (UTC)
From: Ricardo Saiz <rsaizv at yahoo.es>
To: "ribbit-users at lists.openresearch.institute"
    <ribbit-users at lists.openresearch.institute>
Subject: Re: [Ribbit-Users] Ribbit-Users Digest, Vol 4, Issue 1
Message-ID: <1155981330.155.1706049958600 at mail.yahoo.com>
Content-Type: text/plain; charset="utf-8"

 Hello YO2UKI,
Sorry for the delay in my reply. I would say you need about the same power level as for voice over FM. Probably Rattlegram can cleanly decode data under some marginal signal level that would make voice difficult to understand. But signal to noise in FM does not linearly follow S/N on raw rf spectrum. The gain would be low. In any case, the strong point of Ribbit is not long range. You can outperform it with ft8 or wspr. The key in Ribbit / Rattle is leveraging all the available bandwidth in a voice FM radio (or ssb), even with acoustic coupling, plus the error correction capabilities due to FEC.
I think Rattle is a great app. If it is further developed it would provide many posible uses, in a way of improved APRS. I am myself trying the linux modem software and find it great too.
regards from Ricardo EA4GMZ

    En mi?rcoles, 3 de enero de 2024, 22:10:49 CET, <ribbit-users-request at lists.openresearch.institute> escribi?:  
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Message: 1
Date: Wed, 3 Jan 2024 19:02:09 +0200
From: Chris Banu <chris.banu9 at yahoo.com>
To: ribbit-users at lists.openresearch.institute
Subject: [Ribbit-Users] Data about Ribbit behavior in noisy spectrum?
Message-ID: <3fa0b19e-8c07-45a2-b631-ac7059ea58da at yahoo.com>
Content-Type: text/plain; charset="utf-8"; Format="flowed"

Hello everyone! I was wondering if some of you could share tests of 
Ribbit in noisy conditions?
I am considering making a local Ribbit repeater and I'm wondering what 
power I should the repeater use.
I've done some local tests with Baofengs but I want to know if any of 
y'all have a distance record and the settings you used.

Thanks, from YO2UKI!

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Message: 2
Date: Tue, 23 Jan 2024 23:55:49 -0600
From: Matt Miller <rescue7043 at gmail.com>
To: ribbit-users at lists.openresearch.institute
Subject: [Ribbit-Users] PC Program Possibility
Message-ID:
    <CACp4J-jw5ZAO1NC9be0RgAHx_PT2xvoNgrM9w+c4ZqLSHRCbhw at mail.gmail.com>
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Greetings,

I am the VP of a 100% volunteer Search and Rescue team in northern
Wisconsin. I stumbled upon the Rattlegram app by chance and have to say I
am thoroughly impressed with the app and the ability to send text messages
over radio. While most phones don?t have any signal while out on a search
mission, the GPS feature still works. It is a whole lot easier for teams to
copy & paste a GPS coordinate along with a brief message than it is to key
up the radio and read off everything.
When we do searches, we use a computer program that downloads GPS tracks
from our teams. Whether it be voice over radio giving GPS coordinates or
using the Rattlegram App we have to manually write the coordinates into the
computer program. If there were a bare bones PC Program created that we
could just hook the radio up to the sound card on the PC rather than a
phone or tablet, we could literally just ?copy & paste? the data from one
program to the other. Depending on who responds, we do not always have a
tablet available and someone has to connect their personal cellphone.

Is this something that would possibly be in the works for the future? If so
I could definitely get other SAR teams on board to use it (even if there
was a cost involved).
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Message: 3
Date: Wed, 24 Jan 2024 07:16:50 -0500
From: W4CKX <W4CKX at pekt.org>
To: Matt Miller <rescue7043 at gmail.com>
Cc: ribbit-users at lists.openresearch.institute
Subject: Re: [Ribbit-Users] PC Program Possibility
Message-ID:
    <CA+z4KvQDAtxVc_6puQB42h5zoFo63YEkctGY8dW+Kihv5nF6aw at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hello Matt,

We are working on a PWA Progressive Web App so that the same app works on
Android, iOS, Windows and MacOS... so it will work on laptop.

Development has been slow, but we have a new developer interested to join
us so we are heading in the right direction.

Pierre W4CKX

On Wed, Jan 24, 2024, 12:56?AM Matt Miller via Ribbit-Users
<ribbit-users at lists.openresearch.institute> wrote:

>
> Greetings,
>
> I am the VP of a 100% volunteer Search and Rescue team in northern
> Wisconsin. I stumbled upon the Rattlegram app by chance and have to say I
> am thoroughly impressed with the app and the ability to send text messages
> over radio. While most phones don?t have any signal while out on a search
> mission, the GPS feature still works. It is a whole lot easier for teams to
> copy & paste a GPS coordinate along with a brief message than it is to key
> up the radio and read off everything.
> When we do searches, we use a computer program that downloads GPS tracks
> from our teams. Whether it be voice over radio giving GPS coordinates or
> using the Rattlegram App we have to manually write the coordinates into the
> computer program. If there were a bare bones PC Program created that we
> could just hook the radio up to the sound card on the PC rather than a
> phone or tablet, we could literally just ?copy & paste? the data from one
> program to the other. Depending on who responds, we do not always have a
> tablet available and someone has to connect their personal cellphone.
>
> Is this something that would possibly be in the works for the future? If
> so I could definitely get other SAR teams on board to use it (even if there
> was a cost involved).
>
>
>
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