For a long time I wanted to play on 80 meters with a four square antenna.
In 2001 we were in Dayton for the Hamvention and we decided to drive to Comtek Systems where I bought the switch box for an 80 meter 4 square.
Back home I started to build the four verticals. I got advise from Bouke PA0ZH who already had a four square antenna system.
The verticals are made in two parts. The lower 10 meter is made from aluminium and the upper 9 meter is a telescoping tower bought from DK3SU. The alumium part exists out op 5 different types of aluminium starting at 60 mm (outside diameter ) up to 30 mm (outside diameter).
| One of the verticals in parts.
Left the post
In the middle the 7 aluminium pipes
At the right the telescoping tower from DK6SI
|Picture of the 4 square box from Comtek Systems.|
The vertical in three
In these three parts I transported it to the farmers ground.
Only to show wat 19m vertical is.
Later it would turn out that the verticals were a little to short.
|To fill up the difference between the aluminium pipe and de the fiber glas tower I made 2 nylon rings.||
The ring between the fiberglas tower and the aluminium pipe.
To put up a 20 meter high vertical you have to have a good base. I made
it from plastic PVC pipe.
Next to the base you can see the coax connection.
Here a total view of the 4square.
Second from the right (in front) is the Titanex V160s
Most left the mobile Versatower in lowest position.
For questions pse mail me.