diff --git a/ChangeLog b/ChangeLog
index 042b2d9f..ef1d2f8b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -19572,3 +19572,6 @@
 2020-02-14 Fred Gleason <fredg@paravelsystems.com>
 	* Fixed a regression in the BroadcastTools SS 4.1 MLR switcher driver
 	that could cause deadlocks and intermittent operation.
+2020-02-14 Fred Gleason <fredg@paravelsystems.com>
+	* Fixed a regression in the BroadcastTools SS 4.2 switcher driver
+	that could cause deadlocks and intermittent operation.
diff --git a/ripcd/btss42.cpp b/ripcd/btss42.cpp
index 20957628..0593afbd 100644
--- a/ripcd/btss42.cpp
+++ b/ripcd/btss42.cpp
@@ -2,7 +2,7 @@
 //
 // A Rivendell switcher driver for the BroadcastTools SS 4.2
 //
-//   (C) Copyright 2002-2019 Fred Gleason <fredg@paravelsystems.com>
+//   (C) Copyright 2002-2020 Fred Gleason <fredg@paravelsystems.com>
 //
 //   This program is free software; you can redistribute it and/or modify
 //   it under the terms of the GNU General Public License version 2 as
@@ -53,6 +53,7 @@ BtSs42::BtSs42(RDMatrix *matrix,QObject *parent)
   //
   RDTty *tty=new RDTty(rda->station()->name(),matrix->port(RDMatrix::Primary));
   bt_device=new RDTTYDevice();
+  connect(bt_device,SIGNAL(readyRead()),this,SLOT(processStatus()));
   if(tty->active()) {
     bt_device->setName(tty->port());
     bt_device->setSpeed(tty->baudRate());
@@ -69,13 +70,6 @@ BtSs42::BtSs42(RDMatrix *matrix,QObject *parent)
   connect(bt_gpi_oneshot,SIGNAL(timeout(int)),this,SLOT(gpiOneshotData(int)));
   bt_gpo_oneshot=new RDOneShot(this);
   connect(bt_gpo_oneshot,SIGNAL(timeout(int)),this,SLOT(gpoOneshotData(int)));
-
-  //
-  // The Poll Timer
-  //
-  QTimer *timer=new QTimer(this,"poll_timer");
-  connect(timer,SIGNAL(timeout()),this,SLOT(processStatus()));
-  timer->start(BTSS42_POLL_INTERVAL);
 }
 
 
diff --git a/ripcd/btss42.h b/ripcd/btss42.h
index 34023c7d..76a732fd 100644
--- a/ripcd/btss42.h
+++ b/ripcd/btss42.h
@@ -2,7 +2,7 @@
 //
 // A Rivendell switcher driver for the BroadcastTools SS 4.2
 //
-//   (C) Copyright 2002-2005,2016 Fred Gleason <fredg@paravelsystems.com>
+//   (C) Copyright 2002-2020 Fred Gleason <fredg@paravelsystems.com>
 //
 //   This program is free software; you can redistribute it and/or modify
 //   it under the terms of the GNU General Public License version 2 as
@@ -30,7 +30,6 @@
 #include <switcher.h>
 
 #define BTSS42_UNIT_ID 0
-#define BTSS42_POLL_INTERVAL 100
 #define BTSS42_GPIO_PINS 16
 
 class BtSs42 : public Switcher