diff --git a/src/protocols/PhysicalLayer/PhysicalLayer.cpp b/src/protocols/PhysicalLayer/PhysicalLayer.cpp
index d96f300f..3b7d870a 100644
--- a/src/protocols/PhysicalLayer/PhysicalLayer.cpp
+++ b/src/protocols/PhysicalLayer/PhysicalLayer.cpp
@@ -132,11 +132,18 @@ int16_t PhysicalLayer::startReceive() {
 }
 
 int16_t PhysicalLayer::startReceive(uint32_t timeout, RadioLibIrqFlags_t irqFlags, RadioLibIrqFlags_t irqMask, size_t len) {
-  (void)timeout;
-  (void)irqFlags;
-  (void)irqMask;
-  (void)len;
-  return(RADIOLIB_ERR_UNSUPPORTED);
+  RadioModeConfig_t cfg = {
+    .receive = {
+      .timeout = timeout,
+      .irqFlags = irqFlags,
+      .irqMask = irqMask,
+      .len = len,
+    }
+  };
+
+  int16_t state = this->stageMode(RADIOLIB_RADIO_MODE_RX, &cfg);
+  RADIOLIB_ASSERT(state);
+  return(this->launchMode());
 }
 
 #if defined(RADIOLIB_BUILD_ARDUINO)
@@ -150,10 +157,17 @@ int16_t PhysicalLayer::startTransmit(const char* str, uint8_t addr) {
 }
 
 int16_t PhysicalLayer::startTransmit(const uint8_t* data, size_t len, uint8_t addr) {
-  (void)data;
-  (void)len;
-  (void)addr;
-  return(RADIOLIB_ERR_UNSUPPORTED);
+  RadioModeConfig_t cfg = {
+    .transmit = {
+      .data = data,
+      .len = len,
+      .addr = addr,
+    }
+  };
+
+  int16_t state = this->stageMode(RADIOLIB_RADIO_MODE_TX, &cfg);
+  RADIOLIB_ASSERT(state);
+  return(this->launchMode());
 }
 
 int16_t PhysicalLayer::finishTransmit() {
diff --git a/src/protocols/PhysicalLayer/PhysicalLayer.h b/src/protocols/PhysicalLayer/PhysicalLayer.h
index 5b159d9b..3d785b6d 100644
--- a/src/protocols/PhysicalLayer/PhysicalLayer.h
+++ b/src/protocols/PhysicalLayer/PhysicalLayer.h
@@ -151,7 +151,7 @@ struct ReceiveConfig_t {
 
 struct TransmitConfig_t {
   /*! \brief Binary data that will be transmitted. */
-  uint8_t* data;
+  const uint8_t* data;
 
   /*! \brief Length of binary data to transmit (in bytes). */
   size_t len;
@@ -306,7 +306,7 @@ class PhysicalLayer {
       \param len Packet length, needed for some modules under special circumstances (e.g. LoRa implicit header mode).
       \returns \ref status_codes
     */
-    virtual int16_t startReceive(uint32_t timeout, RadioLibIrqFlags_t irqFlags, RadioLibIrqFlags_t irqMask, size_t len);
+    virtual int16_t startReceive(uint32_t timeout, RadioLibIrqFlags_t irqFlags = RADIOLIB_IRQ_RX_DEFAULT_FLAGS, RadioLibIrqFlags_t irqMask = RADIOLIB_IRQ_RX_DEFAULT_MASK, size_t len = 0);
 
     /*!
       \brief Binary receive method. Must be implemented in module class.