Universal Licensing System
WROK489
Michigan, State of
License details
| ULS identifier | 4516368 |
|---|
| Call sign | WROK489 |
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| Radio service | PA |
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| Status | A |
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| Grant date | 2021-10-27 |
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| Expiration | 2031-10-27 |
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| Frequency range | 4947.5 - 4982.5 MHz (8 frequencies) |
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| Locations | 2 |
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| Representative location | ANN ARBOR, WASHTENAW, MI |
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| Coordinates | 42.2963889, -83.8836111 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:08:32 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FXO | 4947.50000000 | | | 0.100000 | 60.950000 | |
| 2 | 1 | FXO | 4947.50000000 | | | 0.100000 | 60.950000 | |
| 1 | 1 | FXO | 4952.50000000 | | | 0.100000 | 60.950000 | |
| 2 | 1 | FXO | 4952.50000000 | | | 0.100000 | 60.950000 | |
| 1 | 1 | FXO | 4957.50000000 | | | 0.100000 | 60.950000 | |
| 2 | 1 | FXO | 4957.50000000 | | | 0.100000 | 60.950000 | |
| 1 | 1 | FXO | 4962.50000000 | | | 0.100000 | 60.950000 | |
| 2 | 1 | FXO | 4962.50000000 | | | 0.100000 | 60.950000 | |
| 1 | 1 | FXO | 4967.50000000 | | | 0.100000 | 60.950000 | |
| 2 | 1 | FXO | 4967.50000000 | | | 0.100000 | 60.950000 | |
| 1 | 1 | FXO | 4972.50000000 | | | 0.100000 | 60.950000 | |
| 2 | 1 | FXO | 4972.50000000 | | | 0.100000 | 60.950000 | |
| 1 | 1 | FXO | 4977.50000000 | | | 0.100000 | 60.950000 | |
| 2 | 1 | FXO | 4977.50000000 | | | 0.100000 | 60.950000 | |
| 1 | 1 | FXO | 4982.50000000 | | | 0.100000 | 60.950000 | |
| 2 | 1 | FXO | 4982.50000000 | | | 0.100000 | 60.950000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 4947.50000000 | | 5M00W7W |
| 2 | 1 | 4947.50000000 | | 5M00W7W |
| 1 | 1 | 4952.50000000 | | 5M00W7W |
| 2 | 1 | 4952.50000000 | | 5M00W7W |
| 1 | 1 | 4957.50000000 | | 5M00W7W |
| 2 | 1 | 4957.50000000 | | 5M00W7W |
| 1 | 1 | 4962.50000000 | | 5M00W7W |
| 2 | 1 | 4962.50000000 | | 5M00W7W |
| 1 | 1 | 4967.50000000 | | 5M00W7W |
| 2 | 1 | 4967.50000000 | | 5M00W7W |
| 1 | 1 | 4972.50000000 | | 5M00W7W |
| 2 | 1 | 4972.50000000 | | 5M00W7W |
| 1 | 1 | 4977.50000000 | | 5M00W7W |
| 2 | 1 | 4977.50000000 | | 5M00W7W |
| 1 | 1 | 4982.50000000 | | 5M00W7W |
| 2 | 1 | 4982.50000000 | | 5M00W7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 7778 JACKSON RD, ANN ARBOR, WASHTENAW, MI | 42.29638889, -83.88361111 | 276.700 m | LTOWER | 148.000 m structure / 152.000 m overall | |
| 2 | T | 705 N. Zeeb Rd., Ann Arbor, WASHTENAW, MI | 42.29702778, -83.84011111 | 269.800 m | LTOWER | 30.500 m structure / 31.700 m overall | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 30.500 m | S | 30.2000 | 88.6000 | 36.000 | |
| 1 | 2 | T | | 30.500 m | S | 30.2000 | 268.6000 | 27.000 | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 7150 Harris Drive, Dimondale, MI | EATON | 5173335050 |
License history
| Date | File or call sign | Action |
|---|
| 2025-05-27 | WROK489 | COR |
| 2025-05-14 | WROK489 | COR |
| 2022-04-01 | WROK489 | LIAUA |
| 2021-11-23 | WROK489 | LIAUA |
| 2021-10-27 | WROK489 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4516368 | 2026-08-02 01:08:32 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WROK489 | ULS 4516368 | 2026-08-02 01:08:32 |
| Status | A | ULS 4516368 | 2026-08-02 01:08:32 |
| Service | PA | ULS 4516368 | 2026-08-02 01:08:32 |
| Grant Date | 2021-10-27 | ULS 4516368 | 2026-08-02 01:08:32 |
| Expiration Date | 2031-10-27 | ULS 4516368 | 2026-08-02 01:08:32 |