Ensure "RTT" as a mode is understood as "RTTY" and similar.

core/lookup_helper.py

@@ -16,7 +16,7 @@ from requests_cache import CachedSession
 from core.cache_utils import SEMI_STATIC_URL_DATA_CACHE
 from core.config import config
 from core.constants import BANDS, UNKNOWN_BAND, CW_MODES, PHONE_MODES, DATA_MODES, ALL_MODES, \
-    HTTP_HEADERS, HAMQTH_PRG
+    HTTP_HEADERS, HAMQTH_PRG, MODE_ALIASES
 
 
 # Singleton class that provides lookup functionality.
@@ -160,6 +160,9 @@ class LookupHelper:
         for mode in ALL_MODES:
             if mode in comment.upper():
                 return mode
+        for mode in MODE_ALIASES.keys():
+            if mode in comment.upper():
+                return MODE_ALIASES[mode]
         return None
 
     # Infer a "mode family" from a mode.