Universal Licensing System
WRKN591
Surf Air Wireless, LLC
License details
| ULS identifier | 4379103 |
|---|
| Call sign | WRKN591 |
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| Radio service | MG |
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| Status | A |
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| Grant date | 2021-01-23 |
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| Expiration | 2031-01-23 |
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| Frequency range | 11405 MHz |
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| Locations | 2 |
|---|
| Representative location | ALLEGAN, ALLEGAN, MI |
|---|
| Coordinates | 42.5814444, -85.7548333 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:44:33 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FXO | 11405.00000000 | | | | | |
| 1 | 1 | FXO | 11405.00000000 | | | | | |
| 1 | 1 | FXO | 11405.00000000 | | | | | |
| 1 | 1 | FXO | 11405.00000000 | | | | | |
| 1 | 1 | FXO | 11405.00000000 | | | | | |
| 1 | 1 | FXO | 11405.00000000 | | | | | |
| 1 | 1 | FXO | 11405.00000000 | | | | | |
| 1 | 1 | FXO | 11405.00000000 | | | | | |
| 1 | 1 | FXO | 11405.00000000 | | | | | |
| 1 | 1 | FXO | 11405.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 11405.00000000 | | 80M0D7W |
| 1 | 1 | 11405.00000000 | | 80M0D7W |
| 1 | 1 | 11405.00000000 | | 80M0D7W |
| 1 | 1 | 11405.00000000 | | 80M0D7W |
| 1 | 1 | 11405.00000000 | | 80M0D7W |
| 1 | 1 | 11405.00000000 | | 80M0D7W |
| 1 | 1 | 11405.00000000 | | 80M0D7W |
| 1 | 1 | 11405.00000000 | | 80M0G7W |
| 1 | 1 | 11405.00000000 | | 80M0D7W |
| 1 | 1 | 11405.00000000 | | 80M0D7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 2129 122ND AVE, ALLEGAN, ALLEGAN, MI | 42.58144444, -85.75483333 | 282.000 m | GTOWER | 132.600 m structure / 132.600 m overall | |
| 2 | R | | 42.56447222, -85.45861111 | 265.800 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | RADIO WAVES, INC HP4-11 | | V | 41.0000 | 94.3000 | | |
| 1 | 2 | R | RADIO WAVES, INC HP4-11 | | | 41.0000 | 0.0000 | | |
License history
| Date | File or call sign | Action |
|---|
| 2022-04-26 | WRKN591 | LETCNS |
| 2021-08-03 | WRKN591 | LITRAN |
| 2021-03-24 | WRKN591 | LIAUA |
| 2021-01-23 | WRKN591 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4379103 | 2026-08-02 02:44:33 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRKN591 | ULS 4379103 | 2026-08-02 02:44:33 |
| Status | A | ULS 4379103 | 2026-08-02 02:44:33 |
| Service | MG | ULS 4379103 | 2026-08-02 02:44:33 |
| Grant Date | 2021-01-23 | ULS 4379103 | 2026-08-02 02:44:33 |
| Expiration Date | 2031-01-23 | ULS 4379103 | 2026-08-02 02:44:33 |