diff --git a/test/aprsme/is_test.exs b/test/aprsme/is_test.exs
index 2297f4b..70fb488 100644
--- a/test/aprsme/is_test.exs
+++ b/test/aprsme/is_test.exs
@@ -360,6 +360,56 @@ defmodule Aprsme.IsTest do
     end
   end
 
+  describe "dispatch/1 with various APRS formats" do
+    setup do
+      ensure_ets_table()
+      Logger.configure(level: :error)
+      on_exit(fn -> Logger.configure(level: :error) end)
+      :ok
+    end
+
+    test "dispatches a position-with-timestamp packet" do
+      raw = "N0CALL>APRS,WIDE1-1:/092345z3300.00N/09600.00W>Test"
+      capture_log(fn -> Aprsme.Is.dispatch(raw) end)
+    end
+
+    test "dispatches a telemetry packet" do
+      raw = "N0CALL>APRS,WIDE1-1:T#001,000,000,000,000,000,00000000"
+      capture_log(fn -> Aprsme.Is.dispatch(raw) end)
+    end
+
+    test "dispatches a status packet" do
+      raw = "N0CALL>APRS,WIDE1-1:>Status update text"
+      capture_log(fn -> Aprsme.Is.dispatch(raw) end)
+    end
+
+    test "dispatches a message packet" do
+      raw = "N0CALL>APRS,WIDE1-1::KE5ABC   :Hello{001"
+      capture_log(fn -> Aprsme.Is.dispatch(raw) end)
+    end
+
+    test "dispatches an object packet" do
+      raw = "N0CALL>APRS,WIDE1-1:;MyObj    *111111z3300.00N/09600.00W-"
+      capture_log(fn -> Aprsme.Is.dispatch(raw) end)
+    end
+
+    test "dispatches an item packet" do
+      raw = "N0CALL>APRS,WIDE1-1:)MyItem!3300.00N/09600.00W-"
+      capture_log(fn -> Aprsme.Is.dispatch(raw) end)
+    end
+
+    test "dispatches an empty string (no-op)" do
+      assert Aprsme.Is.dispatch("") == nil
+    end
+
+    test "dispatches a comment (starts with #)" do
+      capture_log(fn ->
+        # dispatch returns :ok for server comments without crashing.
+        assert Aprsme.Is.dispatch("# server comment") in [nil, :ok]
+      end)
+    end
+  end
+
   describe "terminate/2" do
     test "terminates cleanly with nil socket" do
       state = build_state(%{socket: nil})