| Site | Code |
|---|---|
| MINOCQUA/WOODRUFF | KARV |
| APPLETON/OUTAGAMIE | KATW |
| WAUSAU MUNICIPAL & | KAUW |
| MOSINEE/CENTRAL WI | KCWA |
| EAU CLAIRE CO. ARPT | KEAU |
| GREEN BAY/STRAUBEL | KGRB |
| HAYWARD MUNI AIRPORT | KHYR |
| ALEXANDER FIELD WIS RAPIDS | KISW |
| JANESVILLE/ROCK CO. | KJVL |
| LONE ROCK REGIONAL | KLNR |
| LA CROSSE MUNICIPAL | KLSE |
| MILWAUKEE/MITCHELL | KMKE |
| MADISON/DANE RGNL | KMSN |
| MANITOWAC MUNI AWOS | KMTW |
| MILWAUKEE/TIMMERMAN | KMWC |
| OSHKOSH/WITTMAN FLD | KOSH |
| PHILLIPS/PRICE CO. | KPBH |
| RHINELANDER/ONEIDA | KRHI |
| WATERTOWN | KRYV |
| STURGEON BAY | KSUE |
| VOLK/CAMP DOUGLAS | KVOK |