Universal Licensing System
WRDB312
LOMBARD ELEMENTARY SCHOOL DISTRICT 44
License details
| ULS identifier | 4135168 |
|---|
| Call sign | WRDB312 |
|---|
| Radio service | IG |
|---|
| Status | A |
|---|
| Grant date | 2019-03-19 |
|---|
| Expiration | 2029-03-19 |
|---|
| Frequency range | 451.725 - 467.2625 MHz (9 frequencies) |
|---|
| Locations | 1 |
|---|
| Representative location | Lombard, DUPAGE, IL |
|---|
| Coordinates | 41.8535556, -88.0198889 |
|---|
| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:21:39 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB2 | 451.72500000 | | | 40.000000 | 50.000000 | |
| 2 | 1 | MO | 451.72500000 | | | 5.000000 | 5.000000 | |
| 1 | 1 | FB2 | 453.01250000 | | | 40.000000 | 50.000000 | |
| 2 | 1 | MO | 453.01250000 | | | 5.000000 | 5.000000 | |
| 2 | 1 | MO | 456.72500000 | | | 5.000000 | 5.000000 | |
| 2 | 1 | MO | 458.01250000 | | | 5.000000 | 5.000000 | |
| 3 | 1 | MO | 462.26250000 | | | 5.000000 | 5.000000 | |
| 3 | 1 | MO | 462.31250000 | | | 5.000000 | 5.000000 | |
| 3 | 1 | MO | 466.35000000 | | | 5.000000 | 5.000000 | |
| 3 | 1 | MO | 466.56250000 | | | 5.000000 | 5.000000 | |
| 3 | 1 | MO | 467.26250000 | | | 5.000000 | 5.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 451.72500000 | | 11K2F3E |
| 1 | 1 | 451.72500000 | | 7K60FXE |
| 2 | 1 | 451.72500000 | | 11K2F3E |
| 2 | 1 | 451.72500000 | | 7K60FXE |
| 1 | 1 | 453.01250000 | | 7K60FXE |
| 1 | 1 | 453.01250000 | | 11K2F3E |
| 2 | 1 | 453.01250000 | | 7K60FXE |
| 2 | 1 | 453.01250000 | | 11K2F3E |
| 2 | 1 | 456.72500000 | | 11K2F3E |
| 2 | 1 | 456.72500000 | | 7K60FXE |
| 2 | 1 | 458.01250000 | | 7K60FXE |
| 2 | 1 | 458.01250000 | | 11K2F3E |
| 3 | 1 | 462.26250000 | | 7K60FXE |
| 3 | 1 | 462.26250000 | | 11K2F3E |
| 3 | 1 | 462.31250000 | | 11K2F3E |
| 3 | 1 | 462.31250000 | | 7K60FXE |
| 3 | 1 | 466.35000000 | | 11K2F3E |
| 3 | 1 | 466.35000000 | | 7K60FXE |
| 3 | 1 | 466.56250000 | | 11K2F3E |
| 3 | 1 | 466.56250000 | | 7K60FXE |
| 3 | 1 | 467.26250000 | | 7K60FXE |
| 3 | 1 | 467.26250000 | | 11K2F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 1514 W Main Street, Lombard, DUPAGE, IL | 41.85355556, -88.01988889 | 228.000 m | BMAST | 15.200 m structure / 15.200 m overall | |
| 2 | T | | | | | | |
| 3 | T | Lombard, DUPAGE, IL | 41.85355556, -88.01988889 | | | | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 15.200 m | | | | 26.500 | |
| 1 | 2 | T | | | | | | | |
| 1 | 3 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 1514 S Main Street, Lombard, IL | DUPAGE | 6308274400 |
License history
| Date | File or call sign | Action |
|---|
| 2019-12-17 | WRDB312 | LETCNS |
| 2019-05-31 | WRDB312 | LIMOD |
| 2019-03-19 | WRDB312 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4135168 | 2026-08-02 01:21:39 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRDB312 | ULS 4135168 | 2026-08-02 01:21:39 |
| Status | A | ULS 4135168 | 2026-08-02 01:21:39 |
| Service | IG | ULS 4135168 | 2026-08-02 01:21:39 |
| Grant Date | 2019-03-19 | ULS 4135168 | 2026-08-02 01:21:39 |
| Expiration Date | 2029-03-19 | ULS 4135168 | 2026-08-02 01:21:39 |