Topband: Inveted L Matching

[Ron Real]

My Inverted L is 53 ft high supported with a 3 ft arm, and the horizontal extends 70 ft to a tree at a 30 ft elevation. So far, I have about 9 random length radials on average ground.  The shortest is about 40 ft, and the longest about 90 ft.  The 90 ft radial is tied to a metal fence.  The vertical section is secured with an insulator, and the coax connector is mountedin PVC fittings.  This PVC housing is attached to a driven 8 ft ground rod, and the coax shield is connected to the top of the ground rod, and the radials are attached to the rod via a ground rod clamp.  I have connected a 1 Meg ohm 1/2-watt resistor from the coax center connector to ground to disipate static.     My question is how to match this antenna for better SWR.  I have a fairly broad 2:5 swr b/w from 1845 to 1955, but the SWR at the center of this range is still 2:1.  My MFJ 259 reads the lowest swr at 1895 and 100 ohms impedance.  Most everything I have read indicates I should have a low resistance, and match with a capacitor.  I realize the loss is not great, but is the Unun, or some other inductor what I need to add?  I know I need more radials, and I will add more as I can.  The ground is covered with 8 inches of snow at the present time.  Thanks 73 RonWR5RR