Fix invalid sat mode output

2019-02-25 23:17:00 +01:00 · 2019-02-25 23:17:00 +01:00 · 47ea38b4e7
--- a/application/controllers/Radio.php
+++ b/application/controllers/Radio.php
@ -197,6 +197,7 @@
 						$downlink_mode = "A";
 					}
 					
+					if ($uplink_mode != "" && $downlink_mode != "")
 						echo $uplink_mode."/".$downlink_mode;
 				}
 			}