From c71dfc95a2d263b4abd1bb9252baee09a878f1a7 Mon Sep 17 00:00:00 2001
From: Dave Behnke <916775+dbehnke@users.noreply.github.com>
Date: Sun, 28 Dec 2025 00:44:29 -0500
Subject: [PATCH] fix(m17): allow special chars (-./) in callsign for M17
 protocol compatibility

---
 reflector/Callsign.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/reflector/Callsign.cpp b/reflector/Callsign.cpp
index b4b9666..ef4e160 100644
--- a/reflector/Callsign.cpp
+++ b/reflector/Callsign.cpp
@@ -151,10 +151,9 @@ bool CCallsign::IsValid(void) const
 		}
 	}
 	valid = valid && (iNum < 3);
-	// all remaining char are letter, number or space
 	for ( ; i < CALLSIGN_LEN; i++)
 	{
-		valid = valid && (IsLetter(m_Callsign.c[i]) || IsNumber(m_Callsign.c[i]) || IsSpace(m_Callsign.c[i]));
+		valid = valid && (IsLetter(m_Callsign.c[i]) || IsNumber(m_Callsign.c[i]) || IsSpace(m_Callsign.c[i]) || m_Callsign.c[i] == '-' || m_Callsign.c[i] == '.' || m_Callsign.c[i] == '/');
 	}
 
 	// prefix