Universal Licensing System
WSIJ721
MICHIGAN, STATE OF
License details
| ULS identifier | 5139725 |
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| Call sign | WSIJ721 |
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| Radio service | PF |
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| Status | A |
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| Grant date | 2025-05-20 |
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| Expiration | 2035-05-20 |
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| Frequency range | 4977.5 MHz |
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| Locations | 2 |
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| Representative location | Mason, INGHAM, MI |
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| Coordinates | 42.5919167, -84.4550278 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:47:24 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | | 4977.50000000 | | | | | |
| 1 | 1 | | 4977.50000000 | | | | | |
| 1 | 1 | | 4977.50000000 | | | | | |
| 1 | 1 | FXO | 4977.50000000 | | | | | |
| 1 | 1 | | 4977.50000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 4977.50000000 | | 5M00W7W |
| 1 | 1 | 4977.50000000 | | 5M00W7W |
| 1 | 1 | 4977.50000000 | | 5M00W7W |
| 1 | 1 | 4977.50000000 | | 5M00W7W |
| 1 | 1 | 4977.50000000 | | 5M00W7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 700 Buhl Street, Mason, INGHAM, MI | 42.59191667, -84.45502778 | 275.200 m | LTOWER | 91.400 m structure / 91.700 m overall | |
| 2 | R | | 42.59694444, -84.45550000 | 281.000 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | RADIOWAVES HPLPD1-4.7 | | S | 20.8000 | 182.6000 | | |
| 1 | 2 | R | RADIOWAVES HPLPD1-4.7 | | | 20.8000 | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 7150 HARRIS DRIVE, DIMONDALE, MI | EATON | 5173335050 |
License history
| Date | File or call sign | Action |
|---|
| 2025-05-20 | WSIJ721 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 5139725 | 2026-08-02 02:47:24 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WSIJ721 | ULS 5139725 | 2026-08-02 02:47:24 |
| Status | A | ULS 5139725 | 2026-08-02 02:47:24 |
| Service | PF | ULS 5139725 | 2026-08-02 02:47:24 |
| Grant Date | 2025-05-20 | ULS 5139725 | 2026-08-02 02:47:24 |
| Expiration Date | 2035-05-20 | ULS 5139725 | 2026-08-02 02:47:24 |