[Antennas] Antenna SWR

[Don Keith]

Same phenomenon that baffles many first-time vertical builders.  The more radials--the better the ground plane--the more the SWR creeps up.  Many just drive a ground rod into the ground since the SWR is better, happily assuming that is the best and most efficient antenna they can get.  Or settle for a couple of ground radials because SWR rises as they add more.
 
I suspect your ground plane is better after the rain.  If the SWR didn't get above 2:1, I would not even worry about it...other than increase the number of radials if you can.
 
73,
 
Don N4KC
www.n4kc.com
www.donkeith.com