Iowa
| Site | Code |
|---|
| DES MOINES INTL | KDSM |
| SPENCER | K3SE |
| ATLANTIC | KAIO |
| WATERLOO MUNICIPAL | KALO |
| WASHINGTON | KAWG |
| ALGONA | KAXA |
| BOONE MUNI | KBNW |
| BURLINGTON MUNI | KBRL |
| CLARION | KCAV |
| COUNCIL BLUFFS | KCBF |
| CHARLES CITY | KCCY |
| CEDAR RAPIDS MUNI | KCID |
| CARROLL | KCIN |
| CHARITON | KCNC |
| CRESTON | KCSQ |
| CLINTON MUNI (AWOS) | KCWI |
| DUBUQUE MUNICIPAL | KDBQ |
| DECORAH | KDEH |
| DENISON | KDNS |
| WEBSTER CITY | KEBS |
| KEOKUK MUNI | KEOK |
| ESTHERVILLE MUNI | KEST |
| FAIR FIELD | KFFL |
| FORT DODGE (AWOS) | KFOD |
| CLARINDA | KICL |
| LE MARS | KLRJ |
| MASON CITY MUNI | KMCW |
| MUSCATINE | KMUT |
| MONTICELLO MUNI | KMXO |
| OELWEN | KOLZ |
| ORANGE CITY | KORC |
| OTTUMWA INDUSTRIAL | KOTM |
| KNOXVILLE | KOXV |
| RED OAK | KRDK |
| SHENANDOAH MUNI | KSDA |
| SHELDON | KSHL |
| STORM LAKE | KSLB |
| SIOUX CITY MUNI | KSUX |
| NEWTON MUNI | KTNU |