Universal Licensing System
WNDU231
SANITARY DISTRICT OF HAMMOND
License details
| ULS identifier | 1861132 |
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| Call sign | WNDU231 |
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| Radio service | IG |
|---|
| Status | E |
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| Grant date | 2005-12-02 |
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| Expiration | 2015-11-06 |
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| Cancellation | 2016-01-09 |
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| Frequency range | 451.95 - 456.95 MHz (2 frequencies) |
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| Locations | 3 |
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| Representative location | HAMMOND, LAKE, IN |
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| Coordinates | 41.6500278, -87.5000556 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:13:23 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 2 | 1 | FB2 | 451.95000000 | | | 75.000000 | 148.000000 | |
| 3 | 1 | MO | 451.95000000 | | | 50.000000 | | |
| 1 | 1 | FX1 | 456.95000000 | | | 15.000000 | | |
| 3 | 1 | MO | 456.95000000 | | | 50.000000 | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 2 | 1 | 451.95000000 | | 20K0F3E |
| 3 | 1 | 451.95000000 | | 20K0F3E |
| 1 | 1 | 456.95000000 | | 20K0F3E |
| 3 | 1 | 456.95000000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | IN | | | | | |
| 2 | T | 5925 CALUMET AVE, HAMMOND, LAKE, IN | 41.65002778, -87.50005556 | 180.000 m | | 46.000 m structure | N |
| 3 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | | | | | |
| 1 | 2 | T | | 43.000 m | | | | 0.000 | |
| 1 | 3 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 5143 COLUMBIA AVE, HAMMOND, IN | | 2198536413 |
License history
| Date | File or call sign | Action |
|---|
| 2016-01-09 | WNDU231 | LIEXP |
| 2015-10-28 | WNDU231 | ESUAPR |
| 2015-10-27 | WNDU231 | ESURNW |
| 2015-10-07 | WNDU231 | ESURNW |
| 2015-08-10 | WNDU231 | LETRES |
| 2015-08-08 | WNDU231 | ESURNW |
| 2005-12-02 | WNDU231 | LIREN |
| 2005-11-16 | WNDU231 | ESCAPR |
| 2005-08-15 | WNDU231 | LETRES |
| 2004-03-22 | WNDU231 | AUDOPR |
| 2000-11-24 | WNDU231 | LICCNV |
| 2000-09-05 | WNDU231 | LIREN |
| 2000-09-05 | WNDU231 | AUTHPR |
| 2000-08-08 | WNDU231 | LETRES |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1861132 | 2026-08-02 01:13:23 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WNDU231 | ULS 1861132 | 2026-08-02 01:13:23 |
| Status | E | ULS 1861132 | 2026-08-02 01:13:23 |
| Service | IG | ULS 1861132 | 2026-08-02 01:13:23 |
| Grant Date | 2005-12-02 | ULS 1861132 | 2026-08-02 01:13:23 |
| Expiration Date | 2015-11-06 | ULS 1861132 | 2026-08-02 01:13:23 |
| Cancellation Date | 2016-01-09 | ULS 1861132 | 2026-08-02 01:13:23 |