diff --git a/examples/overlay.py b/examples/overlay.py
new file mode 100644
index 0000000..2b66a59
--- /dev/null
+++ b/examples/overlay.py
@@ -0,0 +1,17 @@
+#!/usr/bin/env python
+
+"""
+Demonstrates adding text overlay (callsign, RSV, etc.) using PIL
+See example output received by slowrx at the following URL:
+http://vsza.hu/c6fa52b2c7b20320bdab2da15877f0efbd466e67d37c8d124a557367de9380da.png
+"""
+
+from PIL import Image, ImageFont, ImageDraw
+from grayscale import Robot8BW
+
+img = Image.open("160x120bw.png")
+font = ImageFont.load_default()
+draw = ImageDraw.Draw(img)
+draw.text((0, 0), "HA5VSA", (255,255,255), font=font)
+sstv = Robot8BW(img, 44100, 16)
+sstv.write_wav("overlay.wav")