diff --git a/plugins/samplesource/airspy/airspyinput.cpp b/plugins/samplesource/airspy/airspyinput.cpp
index 9ed67bb9d..36390966f 100644
--- a/plugins/samplesource/airspy/airspyinput.cpp
+++ b/plugins/samplesource/airspy/airspyinput.cpp
@@ -868,16 +868,27 @@ void AirspyInput::webapiReverseSendSettings(QList<QString>& deviceSettingsKeys,
 
 void AirspyInput::webapiReverseSendStartStop(bool start)
 {
+    SWGSDRangel::SWGDeviceSettings *swgDeviceSettings = new SWGSDRangel::SWGDeviceSettings();
+    swgDeviceSettings->setTx(0);
+    swgDeviceSettings->setOriginatorIndex(m_deviceAPI->getDeviceSetIndex());
+    swgDeviceSettings->setDeviceHwType(new QString("Airspy"));
+
     QString deviceSettingsURL = QString("http://%1:%2/sdrangel/deviceset/%3/device/run")
             .arg(m_settings.m_reverseAPIAddress)
             .arg(m_settings.m_reverseAPIPort)
             .arg(m_settings.m_reverseAPIDeviceIndex);
     m_networkRequest.setUrl(QUrl(deviceSettingsURL));
+    m_networkRequest.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
+
+    QBuffer *buffer=new QBuffer();
+    buffer->open((QBuffer::ReadWrite));
+    buffer->write(swgDeviceSettings->asJson().toUtf8());
+    buffer->seek(0);
 
     if (start) {
-        m_networkManager->sendCustomRequest(m_networkRequest, "POST");
+        m_networkManager->sendCustomRequest(m_networkRequest, "POST", buffer);
     } else {
-        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE");
+        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE", buffer);
     }
 }
 
diff --git a/plugins/samplesource/airspyhf/airspyhfinput.cpp b/plugins/samplesource/airspyhf/airspyhfinput.cpp
index 4ac708328..3fc13786f 100644
--- a/plugins/samplesource/airspyhf/airspyhfinput.cpp
+++ b/plugins/samplesource/airspyhf/airspyhfinput.cpp
@@ -893,16 +893,27 @@ void AirspyHFInput::webapiReverseSendSettings(QList<QString>& deviceSettingsKeys
 
 void AirspyHFInput::webapiReverseSendStartStop(bool start)
 {
+    SWGSDRangel::SWGDeviceSettings *swgDeviceSettings = new SWGSDRangel::SWGDeviceSettings();
+    swgDeviceSettings->setTx(0);
+    swgDeviceSettings->setOriginatorIndex(m_deviceAPI->getDeviceSetIndex());
+    swgDeviceSettings->setDeviceHwType(new QString("AirspyHF"));
+
     QString deviceSettingsURL = QString("http://%1:%2/sdrangel/deviceset/%3/device/run")
             .arg(m_settings.m_reverseAPIAddress)
             .arg(m_settings.m_reverseAPIPort)
             .arg(m_settings.m_reverseAPIDeviceIndex);
     m_networkRequest.setUrl(QUrl(deviceSettingsURL));
+    m_networkRequest.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
+
+    QBuffer *buffer=new QBuffer();
+    buffer->open((QBuffer::ReadWrite));
+    buffer->write(swgDeviceSettings->asJson().toUtf8());
+    buffer->seek(0);
 
     if (start) {
-        m_networkManager->sendCustomRequest(m_networkRequest, "POST");
+        m_networkManager->sendCustomRequest(m_networkRequest, "POST", buffer);
     } else {
-        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE");
+        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE", buffer);
     }
 }
 
diff --git a/plugins/samplesource/bladerf1input/bladerf1input.cpp b/plugins/samplesource/bladerf1input/bladerf1input.cpp
index c3e518b26..876b1032e 100644
--- a/plugins/samplesource/bladerf1input/bladerf1input.cpp
+++ b/plugins/samplesource/bladerf1input/bladerf1input.cpp
@@ -833,16 +833,27 @@ void Bladerf1Input::webapiReverseSendSettings(QList<QString>& deviceSettingsKeys
 
 void Bladerf1Input::webapiReverseSendStartStop(bool start)
 {
+    SWGSDRangel::SWGDeviceSettings *swgDeviceSettings = new SWGSDRangel::SWGDeviceSettings();
+    swgDeviceSettings->setTx(0);
+    swgDeviceSettings->setOriginatorIndex(m_deviceAPI->getDeviceSetIndex());
+    swgDeviceSettings->setDeviceHwType(new QString("BladeRF1"));
+
     QString deviceSettingsURL = QString("http://%1:%2/sdrangel/deviceset/%3/device/run")
             .arg(m_settings.m_reverseAPIAddress)
             .arg(m_settings.m_reverseAPIPort)
             .arg(m_settings.m_reverseAPIDeviceIndex);
     m_networkRequest.setUrl(QUrl(deviceSettingsURL));
+    m_networkRequest.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
+
+    QBuffer *buffer=new QBuffer();
+    buffer->open((QBuffer::ReadWrite));
+    buffer->write(swgDeviceSettings->asJson().toUtf8());
+    buffer->seek(0);
 
     if (start) {
-        m_networkManager->sendCustomRequest(m_networkRequest, "POST");
+        m_networkManager->sendCustomRequest(m_networkRequest, "POST", buffer);
     } else {
-        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE");
+        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE", buffer);
     }
 }
 
diff --git a/plugins/samplesource/bladerf2input/bladerf2input.cpp b/plugins/samplesource/bladerf2input/bladerf2input.cpp
index 24f476e99..209200396 100644
--- a/plugins/samplesource/bladerf2input/bladerf2input.cpp
+++ b/plugins/samplesource/bladerf2input/bladerf2input.cpp
@@ -1316,16 +1316,27 @@ void BladeRF2Input::webapiReverseSendSettings(QList<QString>& deviceSettingsKeys
 
 void BladeRF2Input::webapiReverseSendStartStop(bool start)
 {
+    SWGSDRangel::SWGDeviceSettings *swgDeviceSettings = new SWGSDRangel::SWGDeviceSettings();
+    swgDeviceSettings->setTx(0);
+    swgDeviceSettings->setOriginatorIndex(m_deviceAPI->getDeviceSetIndex());
+    swgDeviceSettings->setDeviceHwType(new QString("BladeRF2"));
+
     QString deviceSettingsURL = QString("http://%1:%2/sdrangel/deviceset/%3/device/run")
             .arg(m_settings.m_reverseAPIAddress)
             .arg(m_settings.m_reverseAPIPort)
             .arg(m_settings.m_reverseAPIDeviceIndex);
     m_networkRequest.setUrl(QUrl(deviceSettingsURL));
+    m_networkRequest.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
+
+    QBuffer *buffer=new QBuffer();
+    buffer->open((QBuffer::ReadWrite));
+    buffer->write(swgDeviceSettings->asJson().toUtf8());
+    buffer->seek(0);
 
     if (start) {
-        m_networkManager->sendCustomRequest(m_networkRequest, "POST");
+        m_networkManager->sendCustomRequest(m_networkRequest, "POST", buffer);
     } else {
-        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE");
+        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE", buffer);
     }
 }
 
diff --git a/plugins/samplesource/fcdpro/fcdproinput.cpp b/plugins/samplesource/fcdpro/fcdproinput.cpp
index 33288b975..aaa0b27ba 100644
--- a/plugins/samplesource/fcdpro/fcdproinput.cpp
+++ b/plugins/samplesource/fcdpro/fcdproinput.cpp
@@ -1124,16 +1124,27 @@ void FCDProInput::webapiReverseSendSettings(QList<QString>& deviceSettingsKeys,
 
 void FCDProInput::webapiReverseSendStartStop(bool start)
 {
+    SWGSDRangel::SWGDeviceSettings *swgDeviceSettings = new SWGSDRangel::SWGDeviceSettings();
+    swgDeviceSettings->setTx(0);
+    swgDeviceSettings->setOriginatorIndex(m_deviceAPI->getDeviceSetIndex());
+    swgDeviceSettings->setDeviceHwType(new QString("FCDPro"));
+
     QString deviceSettingsURL = QString("http://%1:%2/sdrangel/deviceset/%3/device/run")
             .arg(m_settings.m_reverseAPIAddress)
             .arg(m_settings.m_reverseAPIPort)
             .arg(m_settings.m_reverseAPIDeviceIndex);
     m_networkRequest.setUrl(QUrl(deviceSettingsURL));
+    m_networkRequest.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
+
+    QBuffer *buffer=new QBuffer();
+    buffer->open((QBuffer::ReadWrite));
+    buffer->write(swgDeviceSettings->asJson().toUtf8());
+    buffer->seek(0);
 
     if (start) {
-        m_networkManager->sendCustomRequest(m_networkRequest, "POST");
+        m_networkManager->sendCustomRequest(m_networkRequest, "POST", buffer);
     } else {
-        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE");
+        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE", buffer);
     }
 }
 
diff --git a/plugins/samplesource/fcdproplus/fcdproplusinput.cpp b/plugins/samplesource/fcdproplus/fcdproplusinput.cpp
index e15bed390..fdff6300e 100644
--- a/plugins/samplesource/fcdproplus/fcdproplusinput.cpp
+++ b/plugins/samplesource/fcdproplus/fcdproplusinput.cpp
@@ -788,16 +788,27 @@ void FCDProPlusInput::webapiReverseSendSettings(QList<QString>& deviceSettingsKe
 
 void FCDProPlusInput::webapiReverseSendStartStop(bool start)
 {
+    SWGSDRangel::SWGDeviceSettings *swgDeviceSettings = new SWGSDRangel::SWGDeviceSettings();
+    swgDeviceSettings->setTx(0);
+    swgDeviceSettings->setOriginatorIndex(m_deviceAPI->getDeviceSetIndex());
+    swgDeviceSettings->setDeviceHwType(new QString("FCDPro+"));
+
     QString deviceSettingsURL = QString("http://%1:%2/sdrangel/deviceset/%3/device/run")
             .arg(m_settings.m_reverseAPIAddress)
             .arg(m_settings.m_reverseAPIPort)
             .arg(m_settings.m_reverseAPIDeviceIndex);
     m_networkRequest.setUrl(QUrl(deviceSettingsURL));
+    m_networkRequest.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
+
+    QBuffer *buffer=new QBuffer();
+    buffer->open((QBuffer::ReadWrite));
+    buffer->write(swgDeviceSettings->asJson().toUtf8());
+    buffer->seek(0);
 
     if (start) {
-        m_networkManager->sendCustomRequest(m_networkRequest, "POST");
+        m_networkManager->sendCustomRequest(m_networkRequest, "POST", buffer);
     } else {
-        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE");
+        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE", buffer);
     }
 }
 
diff --git a/plugins/samplesource/filesource/filesourceinput.cpp b/plugins/samplesource/filesource/filesourceinput.cpp
index 39e650835..ce6dabbd3 100644
--- a/plugins/samplesource/filesource/filesourceinput.cpp
+++ b/plugins/samplesource/filesource/filesourceinput.cpp
@@ -627,16 +627,27 @@ void FileSourceInput::webapiReverseSendSettings(QList<QString>& deviceSettingsKe
 
 void FileSourceInput::webapiReverseSendStartStop(bool start)
 {
+    SWGSDRangel::SWGDeviceSettings *swgDeviceSettings = new SWGSDRangel::SWGDeviceSettings();
+    swgDeviceSettings->setTx(0);
+    swgDeviceSettings->setOriginatorIndex(m_deviceAPI->getDeviceSetIndex());
+    swgDeviceSettings->setDeviceHwType(new QString("FileSource"));
+
     QString deviceSettingsURL = QString("http://%1:%2/sdrangel/deviceset/%3/device/run")
             .arg(m_settings.m_reverseAPIAddress)
             .arg(m_settings.m_reverseAPIPort)
             .arg(m_settings.m_reverseAPIDeviceIndex);
     m_networkRequest.setUrl(QUrl(deviceSettingsURL));
+    m_networkRequest.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
+
+    QBuffer *buffer=new QBuffer();
+    buffer->open((QBuffer::ReadWrite));
+    buffer->write(swgDeviceSettings->asJson().toUtf8());
+    buffer->seek(0);
 
     if (start) {
-        m_networkManager->sendCustomRequest(m_networkRequest, "POST");
+        m_networkManager->sendCustomRequest(m_networkRequest, "POST", buffer);
     } else {
-        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE");
+        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE", buffer);
     }
 }
 
diff --git a/plugins/samplesource/hackrfinput/hackrfinput.cpp b/plugins/samplesource/hackrfinput/hackrfinput.cpp
index 843f5f3e8..8ec0c04ff 100644
--- a/plugins/samplesource/hackrfinput/hackrfinput.cpp
+++ b/plugins/samplesource/hackrfinput/hackrfinput.cpp
@@ -794,16 +794,27 @@ void HackRFInput::webapiReverseSendSettings(QList<QString>& deviceSettingsKeys,
 
 void HackRFInput::webapiReverseSendStartStop(bool start)
 {
+    SWGSDRangel::SWGDeviceSettings *swgDeviceSettings = new SWGSDRangel::SWGDeviceSettings();
+    swgDeviceSettings->setTx(0);
+    swgDeviceSettings->setOriginatorIndex(m_deviceAPI->getDeviceSetIndex());
+    swgDeviceSettings->setDeviceHwType(new QString("HackRF"));
+
     QString deviceSettingsURL = QString("http://%1:%2/sdrangel/deviceset/%3/device/run")
             .arg(m_settings.m_reverseAPIAddress)
             .arg(m_settings.m_reverseAPIPort)
             .arg(m_settings.m_reverseAPIDeviceIndex);
     m_networkRequest.setUrl(QUrl(deviceSettingsURL));
+    m_networkRequest.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
+
+    QBuffer *buffer=new QBuffer();
+    buffer->open((QBuffer::ReadWrite));
+    buffer->write(swgDeviceSettings->asJson().toUtf8());
+    buffer->seek(0);
 
     if (start) {
-        m_networkManager->sendCustomRequest(m_networkRequest, "POST");
+        m_networkManager->sendCustomRequest(m_networkRequest, "POST", buffer);
     } else {
-        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE");
+        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE", buffer);
     }
 }
 
diff --git a/plugins/samplesource/limesdrinput/limesdrinput.cpp b/plugins/samplesource/limesdrinput/limesdrinput.cpp
index 88a985be4..771182c90 100644
--- a/plugins/samplesource/limesdrinput/limesdrinput.cpp
+++ b/plugins/samplesource/limesdrinput/limesdrinput.cpp
@@ -1758,16 +1758,27 @@ void LimeSDRInput::webapiReverseSendSettings(QList<QString>& deviceSettingsKeys,
 
 void LimeSDRInput::webapiReverseSendStartStop(bool start)
 {
+    SWGSDRangel::SWGDeviceSettings *swgDeviceSettings = new SWGSDRangel::SWGDeviceSettings();
+    swgDeviceSettings->setTx(0);
+    swgDeviceSettings->setOriginatorIndex(m_deviceAPI->getDeviceSetIndex());
+    swgDeviceSettings->setDeviceHwType(new QString("LimeSDR"));
+
     QString deviceSettingsURL = QString("http://%1:%2/sdrangel/deviceset/%3/device/run")
             .arg(m_settings.m_reverseAPIAddress)
             .arg(m_settings.m_reverseAPIPort)
             .arg(m_settings.m_reverseAPIDeviceIndex);
     m_networkRequest.setUrl(QUrl(deviceSettingsURL));
+    m_networkRequest.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
+
+    QBuffer *buffer=new QBuffer();
+    buffer->open((QBuffer::ReadWrite));
+    buffer->write(swgDeviceSettings->asJson().toUtf8());
+    buffer->seek(0);
 
     if (start) {
-        m_networkManager->sendCustomRequest(m_networkRequest, "POST");
+        m_networkManager->sendCustomRequest(m_networkRequest, "POST", buffer);
     } else {
-        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE");
+        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE", buffer);
     }
 }
 
diff --git a/plugins/samplesource/perseus/perseusinput.cpp b/plugins/samplesource/perseus/perseusinput.cpp
index f5ff2b468..f368aba3b 100644
--- a/plugins/samplesource/perseus/perseusinput.cpp
+++ b/plugins/samplesource/perseus/perseusinput.cpp
@@ -674,16 +674,27 @@ void PerseusInput::webapiReverseSendSettings(QList<QString>& deviceSettingsKeys,
 
 void PerseusInput::webapiReverseSendStartStop(bool start)
 {
+    SWGSDRangel::SWGDeviceSettings *swgDeviceSettings = new SWGSDRangel::SWGDeviceSettings();
+    swgDeviceSettings->setTx(0);
+    swgDeviceSettings->setOriginatorIndex(m_deviceAPI->getDeviceSetIndex());
+    swgDeviceSettings->setDeviceHwType(new QString("Perseus"));
+
     QString deviceSettingsURL = QString("http://%1:%2/sdrangel/deviceset/%3/device/run")
             .arg(m_settings.m_reverseAPIAddress)
             .arg(m_settings.m_reverseAPIPort)
             .arg(m_settings.m_reverseAPIDeviceIndex);
     m_networkRequest.setUrl(QUrl(deviceSettingsURL));
+    m_networkRequest.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
+
+    QBuffer *buffer=new QBuffer();
+    buffer->open((QBuffer::ReadWrite));
+    buffer->write(swgDeviceSettings->asJson().toUtf8());
+    buffer->seek(0);
 
     if (start) {
-        m_networkManager->sendCustomRequest(m_networkRequest, "POST");
+        m_networkManager->sendCustomRequest(m_networkRequest, "POST", buffer);
     } else {
-        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE");
+        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE", buffer);
     }
 }
 
diff --git a/plugins/samplesource/plutosdrinput/plutosdrinput.cpp b/plugins/samplesource/plutosdrinput/plutosdrinput.cpp
index 31037fe57..4db3acc97 100644
--- a/plugins/samplesource/plutosdrinput/plutosdrinput.cpp
+++ b/plugins/samplesource/plutosdrinput/plutosdrinput.cpp
@@ -998,16 +998,27 @@ void PlutoSDRInput::webapiReverseSendSettings(QList<QString>& deviceSettingsKeys
 
 void PlutoSDRInput::webapiReverseSendStartStop(bool start)
 {
+    SWGSDRangel::SWGDeviceSettings *swgDeviceSettings = new SWGSDRangel::SWGDeviceSettings();
+    swgDeviceSettings->setTx(0);
+    swgDeviceSettings->setOriginatorIndex(m_deviceAPI->getDeviceSetIndex());
+    swgDeviceSettings->setDeviceHwType(new QString("PlutoSDR"));
+
     QString deviceSettingsURL = QString("http://%1:%2/sdrangel/deviceset/%3/device/run")
             .arg(m_settings.m_reverseAPIAddress)
             .arg(m_settings.m_reverseAPIPort)
             .arg(m_settings.m_reverseAPIDeviceIndex);
     m_networkRequest.setUrl(QUrl(deviceSettingsURL));
+    m_networkRequest.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
+
+    QBuffer *buffer=new QBuffer();
+    buffer->open((QBuffer::ReadWrite));
+    buffer->write(swgDeviceSettings->asJson().toUtf8());
+    buffer->seek(0);
 
     if (start) {
-        m_networkManager->sendCustomRequest(m_networkRequest, "POST");
+        m_networkManager->sendCustomRequest(m_networkRequest, "POST", buffer);
     } else {
-        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE");
+        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE", buffer);
     }
 }
 
diff --git a/plugins/samplesource/remoteinput/remoteinput.cpp b/plugins/samplesource/remoteinput/remoteinput.cpp
index 6ff043cca..ba4cc4db3 100644
--- a/plugins/samplesource/remoteinput/remoteinput.cpp
+++ b/plugins/samplesource/remoteinput/remoteinput.cpp
@@ -483,16 +483,27 @@ void RemoteInput::webapiReverseSendSettings(QList<QString>& deviceSettingsKeys,
 
 void RemoteInput::webapiReverseSendStartStop(bool start)
 {
+    SWGSDRangel::SWGDeviceSettings *swgDeviceSettings = new SWGSDRangel::SWGDeviceSettings();
+    swgDeviceSettings->setTx(0);
+    swgDeviceSettings->setOriginatorIndex(m_deviceAPI->getDeviceSetIndex());
+    swgDeviceSettings->setDeviceHwType(new QString("RemoteInput"));
+
     QString deviceSettingsURL = QString("http://%1:%2/sdrangel/deviceset/%3/device/run")
             .arg(m_settings.m_reverseAPIAddress)
             .arg(m_settings.m_reverseAPIPort)
             .arg(m_settings.m_reverseAPIDeviceIndex);
     m_networkRequest.setUrl(QUrl(deviceSettingsURL));
+    m_networkRequest.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
+
+    QBuffer *buffer=new QBuffer();
+    buffer->open((QBuffer::ReadWrite));
+    buffer->write(swgDeviceSettings->asJson().toUtf8());
+    buffer->seek(0);
 
     if (start) {
-        m_networkManager->sendCustomRequest(m_networkRequest, "POST");
+        m_networkManager->sendCustomRequest(m_networkRequest, "POST", buffer);
     } else {
-        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE");
+        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE", buffer);
     }
 }
 
diff --git a/plugins/samplesource/sdrplay/sdrplayinput.cpp b/plugins/samplesource/sdrplay/sdrplayinput.cpp
index 3e8b28a43..4c3880ab1 100644
--- a/plugins/samplesource/sdrplay/sdrplayinput.cpp
+++ b/plugins/samplesource/sdrplay/sdrplayinput.cpp
@@ -923,16 +923,27 @@ void SDRPlayInput::webapiReverseSendSettings(QList<QString>& deviceSettingsKeys,
 
 void SDRPlayInput::webapiReverseSendStartStop(bool start)
 {
+    SWGSDRangel::SWGDeviceSettings *swgDeviceSettings = new SWGSDRangel::SWGDeviceSettings();
+    swgDeviceSettings->setTx(0);
+    swgDeviceSettings->setOriginatorIndex(m_deviceAPI->getDeviceSetIndex());
+    swgDeviceSettings->setDeviceHwType(new QString("SDRplay1"));
+
     QString deviceSettingsURL = QString("http://%1:%2/sdrangel/deviceset/%3/device/run")
             .arg(m_settings.m_reverseAPIAddress)
             .arg(m_settings.m_reverseAPIPort)
             .arg(m_settings.m_reverseAPIDeviceIndex);
     m_networkRequest.setUrl(QUrl(deviceSettingsURL));
+    m_networkRequest.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
+
+    QBuffer *buffer=new QBuffer();
+    buffer->open((QBuffer::ReadWrite));
+    buffer->write(swgDeviceSettings->asJson().toUtf8());
+    buffer->seek(0);
 
     if (start) {
-        m_networkManager->sendCustomRequest(m_networkRequest, "POST");
+        m_networkManager->sendCustomRequest(m_networkRequest, "POST", buffer);
     } else {
-        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE");
+        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE", buffer);
     }
 }
 
diff --git a/plugins/samplesource/soapysdrinput/soapysdrinput.cpp b/plugins/samplesource/soapysdrinput/soapysdrinput.cpp
index 952625f56..2f92ae214 100644
--- a/plugins/samplesource/soapysdrinput/soapysdrinput.cpp
+++ b/plugins/samplesource/soapysdrinput/soapysdrinput.cpp
@@ -1995,16 +1995,27 @@ void SoapySDRInput::webapiReverseSendSettings(QList<QString>& deviceSettingsKeys
 
 void SoapySDRInput::webapiReverseSendStartStop(bool start)
 {
+    SWGSDRangel::SWGDeviceSettings *swgDeviceSettings = new SWGSDRangel::SWGDeviceSettings();
+    swgDeviceSettings->setTx(0);
+    swgDeviceSettings->setOriginatorIndex(m_deviceAPI->getDeviceSetIndex());
+    swgDeviceSettings->setDeviceHwType(new QString("SoapySDR"));
+
     QString deviceSettingsURL = QString("http://%1:%2/sdrangel/deviceset/%3/device/run")
             .arg(m_settings.m_reverseAPIAddress)
             .arg(m_settings.m_reverseAPIPort)
             .arg(m_settings.m_reverseAPIDeviceIndex);
     m_networkRequest.setUrl(QUrl(deviceSettingsURL));
+    m_networkRequest.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
+
+    QBuffer *buffer=new QBuffer();
+    buffer->open((QBuffer::ReadWrite));
+    buffer->write(swgDeviceSettings->asJson().toUtf8());
+    buffer->seek(0);
 
     if (start) {
-        m_networkManager->sendCustomRequest(m_networkRequest, "POST");
+        m_networkManager->sendCustomRequest(m_networkRequest, "POST", buffer);
     } else {
-        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE");
+        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE", buffer);
     }
 }
 
diff --git a/plugins/samplesource/xtrxinput/xtrxinput.cpp b/plugins/samplesource/xtrxinput/xtrxinput.cpp
index 1a33c69f3..0ce863159 100644
--- a/plugins/samplesource/xtrxinput/xtrxinput.cpp
+++ b/plugins/samplesource/xtrxinput/xtrxinput.cpp
@@ -1617,16 +1617,27 @@ void XTRXInput::webapiReverseSendSettings(QList<QString>& deviceSettingsKeys, co
 
 void XTRXInput::webapiReverseSendStartStop(bool start)
 {
+    SWGSDRangel::SWGDeviceSettings *swgDeviceSettings = new SWGSDRangel::SWGDeviceSettings();
+    swgDeviceSettings->setTx(0);
+    swgDeviceSettings->setOriginatorIndex(m_deviceAPI->getDeviceSetIndex());
+    swgDeviceSettings->setDeviceHwType(new QString("XTRX"));
+
     QString deviceSettingsURL = QString("http://%1:%2/sdrangel/deviceset/%3/device/run")
             .arg(m_settings.m_reverseAPIAddress)
             .arg(m_settings.m_reverseAPIPort)
             .arg(m_settings.m_reverseAPIDeviceIndex);
     m_networkRequest.setUrl(QUrl(deviceSettingsURL));
+    m_networkRequest.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
+
+    QBuffer *buffer=new QBuffer();
+    buffer->open((QBuffer::ReadWrite));
+    buffer->write(swgDeviceSettings->asJson().toUtf8());
+    buffer->seek(0);
 
     if (start) {
-        m_networkManager->sendCustomRequest(m_networkRequest, "POST");
+        m_networkManager->sendCustomRequest(m_networkRequest, "POST", buffer);
     } else {
-        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE");
+        m_networkManager->sendCustomRequest(m_networkRequest, "DELETE", buffer);
     }
 }