From 6d6e2e83147e9f783b76be0208e460aa35b9d234 Mon Sep 17 00:00:00 2001
From: Joe Taylor <joe@princeton.edu>
Date: Tue, 29 Jan 2019 11:49:11 -0500
Subject: [PATCH] Don't try to transmit a blank FT4 message!

---
 widgets/mainwindow.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/widgets/mainwindow.cpp b/widgets/mainwindow.cpp
index 10149dce9..3a6c8b75c 100644
--- a/widgets/mainwindow.cpp
+++ b/widgets/mainwindow.cpp
@@ -8696,6 +8696,8 @@ void MainWindow::ft4_tx(int ntx)
   if(m_ntx == 4) ba=ui->tx4->text().toLocal8Bit();
   if(m_ntx == 5) ba=ui->tx5->currentText().toLocal8Bit();
   if(m_ntx == 6) ba=ui->tx6->text().toLocal8Bit();
+  QString msg = QString::fromLatin1(ba.data());
+  if(msg.trimmed().length()==0) return;             //Don't transmit a blank message
   ba2msg(ba,message);
   int ichk=0;
   genft4_(message, &ichk, msgsent, const_cast<int *>(itone), 37, 37);