Universal Licensing System
WRKP973
Challenge Manufacturing
License details
| ULS identifier | 4381486 |
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| Call sign | WRKP973 |
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| Radio service | IG |
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| Status | A |
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| Grant date | 2021-01-28 |
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| Expiration | 2031-01-28 |
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| Frequency range | 462.9 MHz |
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| Locations | 1 |
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| Representative location | Walker, KENT, MI |
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| Coordinates | 43.0236667, -85.7608889 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:22:13 |
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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 | FB | 462.90000000 | | | 10.000000 | 10.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 462.90000000 | | 11K2F1D |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
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| 1 | T | 3200 Fruit Ridge Avenue NW, Walker, KENT, MI | 43.02366667, -85.76088889 | 234.100 m | B | 9.000 m structure / 9.000 m overall | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 2.000 m | | | | 17.000 | |
Control points
| Number | Address | County | Phone |
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| 1 | 3200 Fruit Ridge Avenue NW, Walker, MI | KENT | 9897634977 |
License history
| Date | File or call sign | Action |
|---|
| 2021-01-28 | WRKP973 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4381486 | 2026-08-02 01:22:13 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRKP973 | ULS 4381486 | 2026-08-02 01:22:13 |
| Status | A | ULS 4381486 | 2026-08-02 01:22:13 |
| Service | IG | ULS 4381486 | 2026-08-02 01:22:13 |
| Grant Date | 2021-01-28 | ULS 4381486 | 2026-08-02 01:22:13 |
| Expiration Date | 2031-01-28 | ULS 4381486 | 2026-08-02 01:22:13 |