From 8d337f6b222b1cbac08de06e8fa3831cec820233 Mon Sep 17 00:00:00 2001
From: DL1YCF <dl1ycf@darc.de>
Date: Sat, 8 May 2021 12:55:35 +0200
Subject: [PATCH] Limit swr so that it does not become infinity

---
 transmitter.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/transmitter.c b/transmitter.c
index 015f46e..ec74483 100644
--- a/transmitter.c
+++ b/transmitter.c
@@ -670,6 +670,11 @@ static gboolean update_display(gpointer data) {
         // reflected power, so correct for that
         //
         double gamma=(double) rev_average / (double) fwd_average;
+        //
+        // this prevents SWR going to infinity, from which the
+        // moving average cannot recover
+        //
+        if (gamma > 0.95) gamma=0.95;
         tx->swr=0.7*(1+gamma)/(1-gamma) + 0.3*tx->swr;
     } else {
         //
-- 
2.45.2