diff --git a/software/mqqt_to_pe1rxf_telemetry/README.md b/software/mqqt_to_pe1rxf_telemetry/README.md
index 72ddc29..4de9cd2 100644
--- a/software/mqqt_to_pe1rxf_telemetry/README.md
+++ b/software/mqqt_to_pe1rxf_telemetry/README.md
@@ -1,6 +1,6 @@
-# Python ModBus test program
+# Python MQTT to pe1rxf telemetry bridge
 
-A simple test program to test ModBus peripherals connected to a serial port.
+Forwards MQTT messages to AX.25 according to the PE1RXF telemetry protocol
 
 ## Configuration
 
@@ -15,6 +15,8 @@ Edit config.yaml.
 - sys
 - logging
 
+AX.25 stack on Linux. "/usr/sbin/beacon" installed.
+
 ## License
 
 Copyright (C) 2025  M.T. Konstapel