Universal Licensing System
WRFB307
3M COMPANY
License details
| ULS identifier | 4242635 |
|---|
| Call sign | WRFB307 |
|---|
| Radio service | IG |
|---|
| Status | A |
|---|
| Grant date | 2020-01-22 |
|---|
| Expiration | 2030-01-22 |
|---|
| Frequency range | 451.3375 - 457.5125 MHz (10 frequencies) |
|---|
| Locations | 1 |
|---|
| Representative location | FAIRMONT, MARTIN, MN |
|---|
| Coordinates | 43.6590556, -94.4464722 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:22:55 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | MO | 451.33750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 451.43750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 451.48750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 451.53750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 451.56250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 452.41250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 452.51250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 452.86250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 457.11250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 457.51250000 | | | 4.000000 | 4.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 451.33750000 | | 7K60FXE |
| 1 | 1 | 451.43750000 | | 7K60FXE |
| 1 | 1 | 451.48750000 | | 7K60FXE |
| 1 | 1 | 451.53750000 | | 7K60FXE |
| 1 | 1 | 451.56250000 | | 7K60FXE |
| 1 | 1 | 452.41250000 | | 7K60FXE |
| 1 | 1 | 452.51250000 | | 7K60FXE |
| 1 | 1 | 452.86250000 | | 7K60FXE |
| 1 | 1 | 457.11250000 | | 7K60FXE |
| 1 | 1 | 457.51250000 | | 7K60FXE |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | FAIRMONT, MARTIN, MN | 43.65905556, -94.44647222 | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 710 NORTH STATE ST, FAIRMONT, MN | MARTIN | 5072353391 |
License history
| Date | File or call sign | Action |
|---|
| 2021-06-15 | WRFB307 | LIAUA |
| 2020-01-24 | WRFB307 | LIAUA |
| 2020-01-22 | WRFB307 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4242635 | 2026-08-02 01:22:55 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRFB307 | ULS 4242635 | 2026-08-02 01:22:55 |
| Status | A | ULS 4242635 | 2026-08-02 01:22:55 |
| Service | IG | ULS 4242635 | 2026-08-02 01:22:55 |
| Grant Date | 2020-01-22 | ULS 4242635 | 2026-08-02 01:22:55 |
| Expiration Date | 2030-01-22 | ULS 4242635 | 2026-08-02 01:22:55 |