Universal Licensing System
WNTJ314
IRWIN MAGNETIC SYSTEMS
License details
| ULS identifier | 1022567 |
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| Call sign | WNTJ314 |
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| Radio service | MG |
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| Status | E |
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| Grant date | 1991-04-18 |
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| Expiration | 1996-04-18 |
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| Frequency range | 21925 MHz |
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| Locations | 2 |
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| Representative location | ANN ARBOR, LIVINGSTON, MI |
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| Coordinates | 42.3055833, -83.6965833 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:47:40 |
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Licensee
| Name | IRWIN MAGNETIC SYSTEMS |
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| Applicant type | C |
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| Location | ANN ARBOR, MI |
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| Address | 2101 COMMONWEALTH BLVD, ANN ARBOR, MI, 48105 |
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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 | FXO | 21925.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
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| 1 | 1 | 21925.00000000 | | 22M8F7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
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| 1 | T | 2101 COMMONWEALTH RD, ANN ARBOR, LIVINGSTON, MI | 42.30558333, -83.69658333 | 278.900 m | | 9.100 m structure / 13.700 m overall | |
| 2 | R | | 42.30919444, -83.69325000 | 283.500 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
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| 1 | 1 | T | | | V | 40.6000 | 34.4000 | | |
| 1 | 2 | R | | | | 40.6000 | | | |
License history
| Date | File or call sign | Action |
|---|
| 1999-08-14 | WNTJ314 | LICCNV |
| 1991-04-18 | WNTJ314 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
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| ULS | 1022567 | 2026-08-02 02:47:40 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WNTJ314 | ULS 1022567 | 2026-08-02 02:47:40 |
| Status | E | ULS 1022567 | 2026-08-02 02:47:40 |
| Service | MG | ULS 1022567 | 2026-08-02 02:47:40 |
| Grant Date | 1991-04-18 | ULS 1022567 | 2026-08-02 02:47:40 |
| Expiration Date | 1996-04-18 | ULS 1022567 | 2026-08-02 02:47:40 |