From 45c17659ccd5add061853ec7c38dbc7d4668c7a2 Mon Sep 17 00:00:00 2001 From: Jm Casler Date: Wed, 3 Feb 2021 01:04:23 -0800 Subject: [PATCH] radio-settings.md - add note about TCXO stability --- docs/radio-settings.md | 1 + 1 file changed, 1 insertion(+) diff --git a/docs/radio-settings.md b/docs/radio-settings.md index e6b148cc..027b9638 100644 --- a/docs/radio-settings.md +++ b/docs/radio-settings.md @@ -42,6 +42,7 @@ Considerations: * * Each step up in Spreading Factor adds about 2.5db extra link budget. * Bandwidth - How big of a slice of the spectrum we use. * * Each doubling of the bandwidth is almost 3db less link budget. +* * Bandwidths less than 31 may be unstable unless you have a high quality Crystal Ossilator. * Coding Rate - How much redundency we encode to resist noise. * * Increasing coding rate increases reliability while decrasing data-rate. * * 4/5 - 1.25x overhead