[Ribbit-Users] Ribbit-Users Digest, Vol 4, Issue 1

[Ricardo Saiz]

 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 miércoles, 3 de enero de 2024, 22:10:49 CET, <ribbit-users-request at lists.openresearch.institute> escribió:  
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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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