diff --git a/tech/SWR.wiki b/tech/SWR.wiki
index 1879e6e..07fafcb 100644
--- a/tech/SWR.wiki
+++ b/tech/SWR.wiki
@@ -1,3 +1,4 @@
 = SWR =
 
-Standing Wave Radio (SWR) 
+Standing Wave Radio (SWR) is a phenomenon where power sent down a feed line is
+reflected back by the antenna