are | JOHNSTON ATOLL 01126 ~ SCIENTIFIC Page 2 CONSTRUCTION Tower No. 5 (the existing 90-ft. RF test tower Building 966) will be instrumented with TC furnished equipment at the 12-ft., 22.5-ft. ,43-ft. and 80-ft. levels. Tower Nos. 2b (90-ft.) and 4 (85-ft.) will be erected and TC furnished instruments will be mounted at the same levels as those mentioned for Tower No. 5 above. Tower No. 2b will be located at coordinates N 199, 455 and E 202, 520 and Tower No. 4 will be at N197, 700 and E 194, 135. *Refer to F&S No. 01065 for costs of structural modifications to Tower No. VOLI April 1969 1.