In the summer of 2008 the elements of the 80 m 4-square have been replaced and it has new phasing and currents to the elements. The 4-square has the following figures. It can be switched in eight directions, stepsize is 45 degrees. The square has 20 m ( 66 ft ) sides. The hight is 19.8 m ( 65 ft ) for each element. The total number of radials is 320. It has four corner- and four broadside firing directions. With corner firing the front element has -225 degrees and .82 current amplitude. The center elements are -113 degrees and .93 current amplitude. The rear is 0 degrees and the current is 1. The different fase ratio increases the directivity, the current ratio reduces the high angle lob at the rear. The gain increased .85 dB compared to a traditional 4-square. The directivity is nearly 20 degrees better. The broadside firing is made with a single capacitor. It makes + 115 degrees , the current to the rear elements is 1. The current to the front elements is .9 Broadside firing is 1.6 dB down relative to corner firing.

The picture of the 80 m 4-square at the upper corner facing the W ( Middle America ) direction.

Google earth view of my location. You can see the bases from the 4-square in the field.

Coordinates: N 52 44' 09.72" and E 04 56' 33.92"

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Pictures below from top to bottom.

- Flowerfield, with flowergirl, around the house.

- 4 elements Optibeam OB4-40 and full size 11 elements 3 band Optibeam OB11-3.

- Tower at full hight with 40 m. at 23 m. ( 75 ft ) and 20/15/10 m. at 26 m ( 85 ft ).

- Two 3 kW 3 phase motors for lifting the tower and to let the tower down.

- Tulip flower field blooming end of April beginning of May.

- Measurement lab. The shack is in an adjacent room. See small picture above.

- 80m 4-square phasing box. The switching box is below.