[Towertalk] Shunt Feed Tower

[Jim Johnson - KC4HW]

Hello Everyone, 

Need a little help with shunt feeding a 80 trylon self supporting tower.   On 
this tower there is a 4 elements for 20m on 36' boom with 4 elements 
interlaced for 15m.  At 87' is 5 elements for 10m on 24' boom and at 95' 
is 2 element on 40m.  

The shunt wire (12 gauge) is at 65' space approximately 4' from the 
tower.  Have determined that the approximately capacitance at the feed 
point is 280pf, however the lowest SWR appears to be about 3 to 1.  

Can anyone suggestion something to improve this situation?

Thanks!

Jim Johnson, KC4HW
Melbourne, Florida
http://www.kc4hw.net
DXCluster RF Connection: 144.95
Telnet://kc4hw.homelinux.net:8000