| Perm ID | Sage ID | JSS ID | Unit | Location | Early Equip. |
Final Equip. |
Oper. Date |
Inact. Date |
Notes |
|---|---|---|---|---|---|---|---|---|---|
| P-81 | Z-81 | 788 | Waverly AFS, IA | FPS-10 (2); FPS-6, FPS-6A / FPS-90 | FPS-27; FPS-90; FPS-26A | 1952 | Sep 1969 | Had the final AN/FPS-10 search radar in ADC. Plans for an AN/FPS-28 FD search radar were cancelled; an AN/FPS-27 FD search radar was installed instead. | |
| P-64A / P-81E | Z-81E | Washington, IA | FPS-18 | Jul-59 | Dec-67 | Gap-Filler Annex. Both building and radar tower are still extant. | |||
| P-71D / P-81A | Z-81A | Dallas Center, IA | FPS-18 * | May-60 | Dec-67 | Gap-Filler Annex. Former LRR site, M-122. * ADC records list the radar type as FPS-18, and the antenna is an AN/FPS-18 type; however, other markings are for an AN/FPS-14. Both building and radar tower are still extant. | |||
| P-81B | Z-81B | La Motte, IA | FPS-18 | Jun-60 | Dec-67 | Gap-Filler Annex. The former GF radar tower has been sold to a new owner, and is now located at 42°06'45.2"N, 090°46'38.2"W (just south of Maquoketa Caves State Park, Iowa) on private land. | |||
| P-81C / P-35F | Z-81C / Z-35F | La Crescent, MN | FPS-18 | Nov-59 | Dec-67 | Gap-Filler Annex. Building is still extant. Radar tower was removed sometime in the 2007 / 2008 time frame. | |||
| P-81D | Glennville, MN ** | ** In original ADC plans, but never was built |
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