diff --git a/shaders/module/signal.frag b/shaders/module/signal.frag
index 1054e15..8c8770a 100644
--- a/shaders/module/signal.frag
+++ b/shaders/module/signal.frag
@@ -15,7 +15,11 @@ vec3 ntsc(vec3 color) {
 	float q = dot(color, vec3(0.211, -.523, 0.312));
 
 	//	faux ntsc signal
-	float carrier = 6.283 * 3.570 * gl_FragCoord.x;		//	2π * 3.57MHz * x
+	float carrier = 22.430;								//	2π * 3.57MHz
+	#if wire == WIRE_COMPOSITE
+	carrier *= gl_FragCoord.x;
+	#endif
+
 	float phase = sin(carrier) * i + cos(carrier) * q;
 	float quad = cos(carrier) * i - sin(carrier) * q;