Universal Licensing System
KDN431
ILLINOIS STATE POLICE
License details
| ULS identifier | 1206464 |
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| Call sign | KDN431 |
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| Radio service | PW |
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| Status | A |
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| Grant date | 2025-01-28 |
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| Expiration | 2035-04-21 |
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| Frequency range | 45.28 - 458.875 MHz (7 frequencies) |
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| Locations | 1 |
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| Representative location | MARION, WILLIAMSON, IL |
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| Coordinates | 37.7200556, -88.9542500 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:13:20 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB | 45.28000000 | | | 300.000000 | 250.000000 | |
| 1 | 1 | FB | 45.36000000 | | | 300.000000 | 250.000000 | |
| 1 | 1 | FB | 45.40000000 | | | 300.000000 | 250.000000 | |
| 1 | 1 | FB | 45.44000000 | | | 300.000000 | 250.000000 | |
| 1 | 1 | FB | 155.02500000 | | | 300.000000 | 250.000000 | |
| 1 | 1 | FB | 453.87500000 | | | 15.000000 | 42.000000 | |
| 1 | 1 | FX1 | 458.87500000 | | | 15.000000 | 42.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 45.28000000 | | 20K0F3E |
| 1 | 1 | 45.36000000 | | 20K0F3E |
| 1 | 1 | 45.40000000 | | 20K0F3E |
| 1 | 1 | 45.44000000 | | 20K0F3E |
| 1 | 1 | 155.02500000 | | 11K2F3E |
| 1 | 1 | 453.87500000 | | 11K2F3E |
| 1 | 1 | 458.87500000 | | 11K2F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 2309 W MAIN ST, MARION, WILLIAMSON, IL | 37.72005556, -88.95425000 | 140.000 m | TOWER | 37.000 m structure / 37.000 m overall | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 30.000 m | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 2200 S Dirksen Pkwy, Springfield, IL | SANGAMON | 2177827860 |
License history
| Date | File or call sign | Action |
|---|
| 2026-06-02 | KDN431 | LIAUA |
| 2025-01-28 | KDN431 | LIREN |
| 2025-01-27 | KDN431 | LETRES |
| 2021-07-24 | KDN431 | LIAUA |
| 2021-06-23 | KDN431 | LIAUA |
| 2015-01-23 | KDN431 | LIREN |
| 2015-01-21 | KDN431 | ESURNW |
| 2014-08-09 | KDN431 | LIAUA |
| 2014-08-08 | KDN431 | ESUAPR |
| 2013-01-29 | KDN431 | LIMOD |
| 2013-01-28 | KDN431 | ESUAPR |
| 2012-04-04 | KDN431 | LIAUA |
| 2012-04-03 | KDN431 | ESUAPR |
| 2010-09-13 | KDN431 | LIMOD |
| 2010-07-02 | KDN431 | ESUAPR |
| 2010-03-11 | KDN431 | LIAUA |
| 2010-03-10 | KDN431 | ESUAPR |
| 2009-02-25 | KDN431 | LIAUA |
| 2009-02-24 | KDN431 | ESCAPR |
| 2005-01-22 | KDN431 | LIREN |
| 2002-04-30 | KDN431 | AUDOPR |
| 2000-10-20 | KDN431 | LICCNV |
| 2000-03-02 | KDN431 | LIREN |
| 2000-03-02 | KDN431 | AUTHPR |
| 2000-01-18 | KDN431 | LETRES |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1206464 | 2026-08-02 01:13:20 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | KDN431 | ULS 1206464 | 2026-08-02 01:13:20 |
| Status | A | ULS 1206464 | 2026-08-02 01:13:20 |
| Service | PW | ULS 1206464 | 2026-08-02 01:13:20 |
| Grant Date | 2025-01-28 | ULS 1206464 | 2026-08-02 01:13:20 |
| Expiration Date | 2035-04-21 | ULS 1206464 | 2026-08-02 01:13:20 |