diff --git a/src/protocols/APRS/APRS.cpp b/src/protocols/APRS/APRS.cpp
index 5c54b217..b1f9b5a8 100644
--- a/src/protocols/APRS/APRS.cpp
+++ b/src/protocols/APRS/APRS.cpp
@@ -24,6 +24,11 @@ int16_t APRSClient::begin(char sym, char* callsign, uint8_t ssid, bool alt) {
     table = '/';
   }
 
+  // callsign is only processed for LoRa APRS
+  if(!callsign) {
+    return(RADIOLIB_ERR_NONE);
+  }
+
   if(strlen(callsign) > RADIOLIB_AX25_MAX_CALLSIGN_LEN) {
     return(RADIOLIB_ERR_INVALID_CALLSIGN);
   }
@@ -43,7 +48,7 @@ int16_t APRSClient::sendPosition(char* destCallsign, uint8_t destSSID, char* lat
     len += strlen(time);
   }
   #if !RADIOLIB_STATIC_ONLY
-    char* info = new char[len + 1];
+    char* info = new char[len + 2];
   #else
     char info[RADIOLIB_STATIC_ARRAY_SIZE];
   #endif
@@ -71,6 +76,7 @@ int16_t APRSClient::sendPosition(char* destCallsign, uint8_t destSSID, char* lat
 
   // send the frame
   info[len] = '\0';
+  RADIOLIB_DEBUG_PROTOCOL_PRINTLN("APRS Info: %s, length = %d", (void*)info, info, (int)len);
   int16_t state = sendFrame(destCallsign, destSSID, info);
   #if !RADIOLIB_STATIC_ONLY
     delete[] info;