diff --git a/app/internal/db_handler.py b/app/internal/db_handler.py
index d86cb0b..f89878e 100644
--- a/app/internal/db_handler.py
+++ b/app/internal/db_handler.py
@@ -179,7 +179,7 @@ async def example_mongo_usage():
         channel_data = {
             "_id": "channel_3", # You can specify _id or let MongoDB generate one
             "name": "Emergency Services",
-            "frequency_khz": 453000,
+            "frequencies": 453000,
             "location": "Countywide",
             "avail_on_nodes": ["client-xyz987"],
             "description": "Monitor for emergency broadcasts."
diff --git a/app/internal/types.py b/app/internal/types.py
index bcdfa3a..e187335 100644
--- a/app/internal/types.py
+++ b/app/internal/types.py
@@ -96,7 +96,7 @@ class System:
                  _id: str,
                  _type: DemodTypes,
                  name: str,
-                 frequency_khz: List[str],
+                 frequencies: List[str],
                  location: str,
                  avail_on_nodes: List[str],
                  description: Optional[str] = "",
@@ -109,7 +109,7 @@ class System:
             _id: A unique identifier for the entry (e.g., MongoDB ObjectId string).
             _type: The demodulation type (P25, NBFM, etc.).
             name: The name of the channel/system.
-            frequency_khz: The frequency in kilohertz.
+            frequencies: The frequency in kilohertz.
             location: The geographical location or coverage area.
             avail_on_nodes: A list of node identifiers where this is available.
             description: A brief description.
@@ -117,7 +117,7 @@ class System:
         self._id: str = str(_id)
         self.type: DemodTypes = _type
         self.name: str = name
-        self.frequency_khz: List[int] = frequency_khz
+        self.frequencies: List[int] = frequencies
         self.location: str = location
         self.avail_on_nodes: List[str] = avail_on_nodes
         self.description: str = description or ""
@@ -130,7 +130,7 @@ class System:
         """
         # Use self.type.value for string representation of the enum
         return (f"System(_id='{self._id}', type='{self.type.value}', name='{self.name}', "
-                f"frequency_khz={self.frequency_khz}, location='{self.location}', "
+                f"frequencies={self.frequencies}, location='{self.location}', "
                 f"avail_on_nodes={self.avail_on_nodes}, description='{self.description}',"
                 f" tags='{self.tags}', whitelist='{self.whitelist}')")
 
@@ -143,7 +143,7 @@ class System:
             "_id": self._id,
             "type": self.type.value, # Store the enum value (string)
             "name": self.name,
-            "frequency_khz": self.frequency_khz,
+            "frequencies": self.frequencies,
             "location": self.location,
             "avail_on_nodes": self.avail_on_nodes,
             "description": self.description,
@@ -171,7 +171,7 @@ class System:
             _id=data.get("_id"),
             _type=system_type,
             name=data.get("name", ""), # Provide default empty string if name is missing
-            frequency_khz=data.get("frequency_khz", 0), # Provide default 0 if missing
+            frequencies=data.get("frequencies", 0), # Provide default 0 if missing
             location=data.get("location", ""),
             avail_on_nodes=data.get("avail_on_nodes", []), # Provide default empty list
             description=data.get("description", ""),
diff --git a/app/routers/systems.py b/app/routers/systems.py
index 9a3c51b..28278f3 100644
--- a/app/routers/systems.py
+++ b/app/routers/systems.py
@@ -28,11 +28,11 @@ async def create_system_route():
              if name_search_result:
                  abort(409, f"System with name '{request_data['name']}' already exists")
 
-        # Check if frequency_khz exists (optional, depending on requirements)
-        if 'frequency_khz' in request_data:
-             freq_search_result = await current_app.sys_db_h.find_system({"frequency_khz": request_data["frequency_khz"]})
+        # Check if frequencies exists (optional, depending on requirements)
+        if 'frequencies' in request_data:
+             freq_search_result = await current_app.sys_db_h.find_system({"frequencies": request_data["frequencies"]})
              if freq_search_result:
-                 abort(409, f"System with frequency '{request_data['frequency_khz']}' already exists")
+                 abort(409, f"System with frequency '{request_data['frequencies']}' already exists")
 
         created_system = await current_app.sys_db_h.create_system(request_data)
 
@@ -262,8 +262,8 @@ async def dismiss_client_from_system_route(system_id: str):
 async def search_systems_route():
     """
     API endpoint to search for systems based on query parameters.
-    Allows searching by 'name', 'frequency_khz', or any other field present in the System model.
-    Example: /systems/search?name=MySystem&frequency_khz=1000
+    Allows searching by 'name', 'frequencies', or any other field present in the System model.
+    Example: /systems/search?name=MySystem&frequencies=1000
     """
     print("\n--- Handling GET /systems/search ---")
     try: