A second height-finder radar arrived a year later.

In addition, an AN/FPS-6B height-finder radar was added that year.

Two AN/FPS-90 height-finder radars were added in the early 1960s.

In 1959 a second height-finder radar came with the installation of an AN/FPS-6A.

The domes came down from the two height-finder radars, leaving only one dome remaining over the search radar.

A second height-finder radar was installed in 1959.

Palermo also received two AN/FPS-6 height-finder radars at this time.

A new MPS-14 long-range height-finder radar was installed in 1958.

By comparing the returns from the different feeds, altitude information could be determined without the need for a separate height-finder radar.

Avco Corporation built this height-finder radar that operated at a frequency of 5400 to 5900 MHz.