I would think adding radials would lower the Radiation resistance. Also, the SWR curve should narrow as ground losses are reduced; since the effect of ground loss resistance swamping the results lessens.
At some point I suggest, as others, that you get on for the contest and see what you can do. If you can run a bit of power, it will help. Receiving is indeed the tough nut to crack on 160 Meters. Elevated radials may be worth a shot. I think Mike uses two with good results. I went to a K2AV FCP and it works good enough for my needs. Even with a K9AY loop system receiving is still my weak point. Get on for the contests and have some fun. Pete _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
