diff --git a/src/ria_toolkit_oss/view/view_signal.py b/src/ria_toolkit_oss/view/view_signal.py
index 3d3d615..1668c13 100644
--- a/src/ria_toolkit_oss/view/view_signal.py
+++ b/src/ria_toolkit_oss/view/view_signal.py
@@ -104,7 +104,8 @@ def view_annotations(
 
     ax.set_title(title, fontsize=title_fontsize, pad=20)
     ax.set_xlabel("Time (s)", fontsize=12)
-    ax.set_ylabel("Frequency (Hz)", fontsize=12)
+    ax.set_ylabel("Frequency (MHz)", fontsize=12)
+    ax.yaxis.set_major_formatter(ticker.FuncFormatter(lambda y, _: f"{y / 1e6:.1f}"))
     ax.grid(alpha=0.1)
 
     output_path, _ = set_path(output_path=output_path)