Universal Licensing System
KNNP524
STEPAN COMPANY
License details
| ULS identifier | 1114520 |
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| Call sign | KNNP524 |
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| Radio service | RS |
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| Status | E |
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| Grant date | 2011-01-26 |
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| Expiration | 2021-03-27 |
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| Cancellation | 2021-05-29 |
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| Frequency range | 8500 - 10000 MHz (2 frequencies) |
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| Locations | 1 |
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| Representative location | ELWOOD, WILL, IL |
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| Coordinates | 41.4416944, -88.1583889 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:09:04 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
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| 1 | 1 | LR | 8500.00000000 | 10000.00000000 | | 0.005000 | 0.250000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 8500.00000000 | | 1G30NXN |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
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| 1 | T | STEPAN COMPANY, ELWOOD, WILL, IL | 41.44169444, -88.15838889 | 161.000 m | TANK | 15.000 m structure / 15.000 m overall | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 15.000 m | | | | 0.000 | |
Control points
| Number | Address | County | Phone |
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| 1 | 22500 MILLSDALE RD, ELWOOD, IL | WILL | 8157274544 |
License history
| Date | File or call sign | Action |
|---|
| 2021-05-29 | KNNP524 | LIEXP |
| 2021-01-04 | KNNP524 | LETRES |
| 2011-01-26 | KNNP524 | LIREN |
| 2011-01-24 | KNNP524 | LTSAPR |
| 2011-01-21 | KNNP524 | EFCAPR |
| 2011-01-21 | KNNP524 | ESCAPR |
| 2011-01-03 | KNNP524 | LETRES |
| 2001-04-04 | KNNP524 | LIREN |
| 2001-01-01 | KNNP524 | LETRES |
| 2000-09-15 | KNNP524 | LICCNV |
| 1996-03-28 | KNNP524 | AUTHPR |
| 1996-03-27 | KNNP524 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1114520 | 2026-08-02 01:09:04 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | KNNP524 | ULS 1114520 | 2026-08-02 01:09:04 |
| Status | E | ULS 1114520 | 2026-08-02 01:09:04 |
| Service | RS | ULS 1114520 | 2026-08-02 01:09:04 |
| Grant Date | 2011-01-26 | ULS 1114520 | 2026-08-02 01:09:04 |
| Expiration Date | 2021-03-27 | ULS 1114520 | 2026-08-02 01:09:04 |
| Cancellation Date | 2021-05-29 | ULS 1114520 | 2026-08-02 01:09:04 |