From 764d29c012ac87af6b5d6f909968876a8073fce0 Mon Sep 17 00:00:00 2001
From: "Hans P. Reiser" <hansr@ru.is>
Date: Thu, 7 Apr 2022 20:56:10 +0000
Subject: [PATCH] update to M20 IDs (correct new -3- IDs)

---
 RX_FSK/src/M10M20.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/RX_FSK/src/M10M20.cpp b/RX_FSK/src/M10M20.cpp
index 489bc99..b63d46e 100644
--- a/RX_FSK/src/M10M20.cpp
+++ b/RX_FSK/src/M10M20.cpp
@@ -585,7 +585,7 @@ int M10M20::decodeframeM20(uint8_t *data) {
 	ser[1] = ((tmp%12 + 1) / 10 ) + '0';
 	ser[2] = ((tmp%12 + 1) % 10 ) + '0';
 	ser[3] = '-';
-	ser[4] = (data[18]/128) + 1 + '0';
+	ser[4] = ((getint16_r(data+19)&0x03)<<1) + (data[18]/128) + 1 + '0';
 	ser[5] = '-';
 	ser[6] = ids[4];
 	ser[7] = ids[5];