Topband: OB804020 shunt feed tower
ik1ydb at libero.it
Tue Jun 26 16:50:30 EDT 2007
I'm about installing an Optibeam OB804020 on a tower of 21m x 0,70m + 1m
mast ( tot 22m ) .
There are 3 monoband antennas on the same 16,60 m. boom : 5 el on
20m, 3 el. on 40m., 2 el. on 80m.
All the elements are elecrically INSULATED from the boom and the boom is not
insulated from the mast.
I'd like to shunt feed the tower to work on 160 m , using the top antenna as
a hat capacitor .
I'd like to know how the insulated elements interact with the shunt fed
tower, either in positive or negative way. Just the boom is electrically
Do you think it will work on 160m ?
Thanks in advanced for any reply.
More information about the Topband