diff --git a/srsenb/rr.conf.example b/srsenb/rr.conf.example
index 78b2df154..54c1ba121 100644
--- a/srsenb/rr.conf.example
+++ b/srsenb/rr.conf.example
@@ -69,6 +69,7 @@ cell_list =
     // min_phr_thres = 0;
     // allowed_meas_bw = 6;
     // t304 = 2000; // in msec. possible values: 50, 100, 150, 200, 500, 1000, 2000
+    // tx_gain = 20.0; // in dB. This gain is set by scaling the source signal.
 
     // CA cells
     scell_list = (