diff --git a/include/loraprs_service.h b/include/loraprs_service.h
index f490c86..48b8388 100644
--- a/include/loraprs_service.h
+++ b/include/loraprs_service.h
@@ -46,7 +46,8 @@ private:
   bool reconnectAprsis();
   void attachKissNetworkClient();
 
-  bool isRigRxBusy() const;
+  inline bool isRigRxBusy() const { return config_.LoraUseCad && rigIsRxActive_; }
+
   void onRigTaskRxPacket();
   void onRigTaskTxPacket();
   static void rigTask(void *self);
diff --git a/src/loraprs_service.cpp b/src/loraprs_service.cpp
index cb83d92..0ba18f5 100644
--- a/src/loraprs_service.cpp
+++ b/src/loraprs_service.cpp
@@ -282,31 +282,34 @@ void Service::setupBt(const String &btName)
 
 void Service::loop()
 { 
+  // wifi connectivity check
   if (needsWifi() && WiFi.status() != WL_CONNECTED) {
     reconnectWifi();
   }
+  // aprs connectivity check
   if (needsAprsis() && !aprsisConnection_.connected() && config_.EnablePersistentAprsConnection) {
     reconnectAprsis();
   }
+  // tcp/ip kiss client connectivity check
   if (config_.KissEnableTcpIp) {
     attachKissNetworkClient();
   }
 
   // RX path, Rig -> Serial
-  bool isRigToSerialProcessed = false;
-  isRigToSerialProcessed = processRigToSerial();
-
-  // TX path, Serial -> Rig
-  if (!isRigToSerialProcessed) {
+  if (!processRigToSerial()) {
 
+    // TX path, Serial -> Rig
     long currentTime = millis();
     if (!isRigRxBusy() && currentTime > csmaSlotTimePrev_ + csmaSlotTime_ && random(0, 255) < csmaP_) {
+      // new data from aprsis
       if (aprsisConnection_.available() > 0) {
         onAprsisDataAvailable();
       }
+      // periodic beacon
       if (needsBeacon()) {
         sendPeriodicBeacon();
       }
+      // tx if data available
       processSerialToRig();
       csmaSlotTimePrev_ = currentTime;
     }
@@ -318,10 +321,6 @@ void Service::loop()
   }
 }
 
-bool Service::isRigRxBusy() const {
-  return config_.LoraUseCad && rigIsRxActive_;
-}
-
 ICACHE_RAM_ATTR void Service::onRigIsrRxPacket() {
   BaseType_t xHigherPriorityTaskWoken;
   if (rigIsRxIsrEnabled_) {