Fix gain

src/main.c

@@ -404,7 +404,7 @@ inline static int next_sample(const uint32_t *buf, int *h)
 	h[1] = x3;
 	h[0] = x4;
 
-	return gain * sample / 2260;
+	return gain * sample / 565;
 }
 
 static void rf_rx(void)