diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3b1c6de0..c387a4a7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,10 +16,13 @@ will consitute of a breaking change warranting a new major release:
 
 # [unreleased]
 
+# [v1.39.1] 2023-03-22
+
 ## Fixed
 
 - Bugfix for STR: Some action commands wrongfully declined.
 - STR: No normal command handling while a special request like an image upload is active.
+- RS485 data line was not enabled when the transmitter was switched on.
 
 # [v1.39.0] 2023-03-21
 
diff --git a/CMakeLists.txt b/CMakeLists.txt
index eca97197..8a966ea9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,7 +11,7 @@ cmake_minimum_required(VERSION 3.13)
 
 set(OBSW_VERSION_MAJOR 1)
 set(OBSW_VERSION_MINOR 39)
-set(OBSW_VERSION_REVISION 0)
+set(OBSW_VERSION_REVISION 1)
 
 # set(CMAKE_VERBOSE TRUE)
 
diff --git a/bsp_q7s/core/ObjectFactory.cpp b/bsp_q7s/core/ObjectFactory.cpp
index 112b7995..d2d7708a 100644
--- a/bsp_q7s/core/ObjectFactory.cpp
+++ b/bsp_q7s/core/ObjectFactory.cpp
@@ -748,10 +748,13 @@ ReturnValue_t ObjectFactory::createCcsdsComponents(CcsdsComponentArgs& args) {
   gpioCookiePtmeIp->addGpio(gpioIds::VC3_PAPB_BUSY, gpio);
   gpio = new GpiodRegularByLineName(q7s::gpioNames::PAPB_EMPTY_SIGNAL_VC3, "PAPB VC3");
   gpioCookiePtmeIp->addGpio(gpioIds::VC3_PAPB_EMPTY, gpio);
+  // Initialise to low and then pull high to do a PTME reset, which puts the PTME in reset
+  // state. It will be put out of reset in the CCSDS handler initialize function.
   gpio = new GpiodRegularByLineName(q7s::gpioNames::PTME_RESETN, "PTME RESETN",
-                                    gpio::Direction::OUT, gpio::Levels::HIGH);
+                                    gpio::Direction::OUT, gpio::Levels::LOW);
   gpioCookiePtmeIp->addGpio(gpioIds::PTME_RESETN, gpio);
   gpioChecker(args.gpioComIF.addGpios(gpioCookiePtmeIp), "PTME PAPB VCs");
+
   // Creating virtual channel interfaces
   VirtualChannelIF* vc0 =
       new PapbVcInterface(&args.gpioComIF, gpioIds::VC0_PAPB_BUSY, gpioIds::VC0_PAPB_EMPTY,
@@ -777,7 +780,7 @@ ReturnValue_t ObjectFactory::createCcsdsComponents(CcsdsComponentArgs& args) {
 
   PtmeGpios gpios;
   gpios.enableTxClock = gpioIds::RS485_EN_TX_CLOCK;
-  gpios.enableTxData = gpioIds::RS485_EN_TX_CLOCK;
+  gpios.enableTxData = gpioIds::RS485_EN_TX_DATA;
   gpios.ptmeResetn = gpioIds::PTME_RESETN;
 
   *args.ipCoreHandler =
diff --git a/linux/devices/startracker/ArcsecDatalinkLayer.cpp b/linux/devices/startracker/ArcsecDatalinkLayer.cpp
index c7f1144e..bc45d619 100644
--- a/linux/devices/startracker/ArcsecDatalinkLayer.cpp
+++ b/linux/devices/startracker/ArcsecDatalinkLayer.cpp
@@ -49,7 +49,7 @@ uint8_t ArcsecDatalinkLayer::getReplyFrameType() { return decodedFrame[0]; }
 
 const uint8_t* ArcsecDatalinkLayer::getReply() { return &decodedFrame[1]; }
 
-void ArcsecDatalinkLayer::encodeFrame(const uinah uint32_t length) {
+void ArcsecDatalinkLayer::encodeFrame(const uint8_t* data, uint32_t length) {
   arc_transport_encode_body(data, length, encBuffer, &encFrameSize);
 }
 
diff --git a/mission/tmtc/CcsdsIpCoreHandler.cpp b/mission/tmtc/CcsdsIpCoreHandler.cpp
index 85dfbbba..c9493f47 100644
--- a/mission/tmtc/CcsdsIpCoreHandler.cpp
+++ b/mission/tmtc/CcsdsIpCoreHandler.cpp
@@ -3,6 +3,7 @@
 #include <fsfw/subsystem/helper.h>
 #include <linux/ipcore/PtmeConfig.h>
 #include <mission/config/comCfg.h>
+#include <unistd.h>
 
 #include "eive/definitions.h"
 #include "fsfw/ipc/QueueFactory.h"
@@ -38,7 +39,7 @@ ReturnValue_t CcsdsIpCoreHandler::performOperation(uint8_t operationCode) {
 }
 
 ReturnValue_t CcsdsIpCoreHandler::initialize() {
-  ReturnValue_t result = returnvalue::OK;
+
   AcceptsTelecommandsIF* tcDistributor =
       ObjectManager::instance()->get<AcceptsTelecommandsIF>(tcDestination);
   if (tcDistributor == nullptr) {
@@ -50,7 +51,7 @@ ReturnValue_t CcsdsIpCoreHandler::initialize() {
 
   tcDistributorQueueId = tcDistributor->getRequestQueue();
 
-  result = parameterHelper.initialize();
+  ReturnValue_t result = parameterHelper.initialize();
   if (result != returnvalue::OK) {
     return result;
   }
@@ -70,6 +71,7 @@ ReturnValue_t CcsdsIpCoreHandler::initialize() {
     return ObjectManagerIF::CHILD_INIT_FAILED;
   }
 
+  // This also pulls the PTME out of reset state.
   if (batPriorityParam == 0) {
     disablePrioritySelectMode();
   } else {
@@ -266,7 +268,6 @@ void CcsdsIpCoreHandler::startTransition(Mode_t mode, Submode_t submode) {
 void CcsdsIpCoreHandler::announceMode(bool recursive) { triggerEvent(MODE_INFO, mode, submode); }
 
 void CcsdsIpCoreHandler::disableTransmit() {
-  ptmeConfig.enableBatPriorityBit(false);
 #ifndef TE0720_1CFA
   gpioIF->pullLow(ptmeGpios.enableTxClock);
   gpioIF->pullLow(ptmeGpios.enableTxData);
@@ -296,6 +297,7 @@ void CcsdsIpCoreHandler::enablePrioritySelectMode() {
   ptmeConfig.enableBatPriorityBit(true);
   // Reset the PTME
   gpioIF->pullLow(ptmeGpios.ptmeResetn);
+  usleep(10);
   gpioIF->pullHigh(ptmeGpios.ptmeResetn);
 }
 
@@ -303,6 +305,7 @@ void CcsdsIpCoreHandler::disablePrioritySelectMode() {
   ptmeConfig.enableBatPriorityBit(false);
   // Reset the PTME
   gpioIF->pullLow(ptmeGpios.ptmeResetn);
+  usleep(10);
   gpioIF->pullHigh(ptmeGpios.ptmeResetn);
 }