Universal Licensing System
WRTM341
OSI Group
License details
| ULS identifier | 4630451 |
|---|
| Call sign | WRTM341 |
|---|
| Radio service | IG |
|---|
| Status | A |
|---|
| Grant date | 2022-07-06 |
|---|
| Expiration | 2032-07-06 |
|---|
| Frequency range | 451.5375 - 464.675 MHz (5 frequencies) |
|---|
| Locations | 3 |
|---|
| Representative location | Chicago, COOK, IL |
|---|
| Coordinates | 41.8177500, -87.6644722 |
|---|
| Source archive | l_LMpriv.zip |
|---|
| Dataset refreshed | 2026-08-02 01:23:50 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB2 | 451.41250000 | | | 40.000000 | 20.000000 | |
| 2 | 1 | MO | 451.41250000 | | | 5.000000 | 5.000000 | |
| 3 | 1 | MO | 451.53750000 | | | 5.000000 | 5.000000 | |
| 3 | 1 | MO | 452.66250000 | | | 5.000000 | 5.000000 | |
| 3 | 1 | MO | 452.68750000 | | | 5.000000 | 5.000000 | |
| 2 | 1 | MO | 456.41250000 | | | 5.000000 | 5.000000 | |
| 3 | 1 | MO | 456.53750000 | | | 5.000000 | 5.000000 | |
| 1 | 1 | FB2 | 461.41250000 | | | 40.000000 | 20.000000 | |
| 2 | 1 | MO | 461.41250000 | | | 5.000000 | 5.000000 | |
| 3 | 1 | MO | 464.67500000 | | | 5.000000 | 5.000000 | |
| 2 | 1 | MO | 466.41250000 | | | 5.000000 | 5.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 451.41250000 | | 11K2F3E |
| 1 | 1 | 451.41250000 | | 7K60FXE |
| 2 | 1 | 451.41250000 | | 11K2F3E |
| 2 | 1 | 451.41250000 | | 7K60FXE |
| 3 | 1 | 451.53750000 | | 7K60FXE |
| 3 | 1 | 451.53750000 | | 11K2F3E |
| 3 | 1 | 452.66250000 | | 7K60FXE |
| 3 | 1 | 452.66250000 | | 11K2F3E |
| 3 | 1 | 452.68750000 | | 7K60FXE |
| 3 | 1 | 452.68750000 | | 11K2F3E |
| 2 | 1 | 456.41250000 | | 11K2F3E |
| 2 | 1 | 456.41250000 | | 7K60FXE |
| 3 | 1 | 456.53750000 | | 7K60FXE |
| 3 | 1 | 456.53750000 | | 11K2F3E |
| 1 | 1 | 461.41250000 | | 7K60FXE |
| 1 | 1 | 461.41250000 | | 11K2F3E |
| 2 | 1 | 461.41250000 | | 7K60FXE |
| 2 | 1 | 461.41250000 | | 11K2F3E |
| 3 | 1 | 464.67500000 | | 11K2F3E |
| 3 | 1 | 464.67500000 | | 7K60FXE |
| 2 | 1 | 466.41250000 | | 11K2F3E |
| 2 | 1 | 466.41250000 | | 7K60FXE |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 4201 S Ashland Avenue, Chicago, COOK, IL | 41.81775000, -87.66447222 | 181.000 m | B | 8.000 m structure / 8.000 m overall | |
| 2 | T | | | | | | |
| 3 | T | Chicago, COOK, IL | 41.81777778, -87.66444444 | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 8.000 m | | | | 7.100 | |
| 1 | 2 | T | | | | | | | |
| 1 | 3 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 4201 S Ashland Avenue, Chicago, IL | COOK | 7024961077 |
License history
| Date | File or call sign | Action |
|---|
| 2022-07-06 | WRTM341 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4630451 | 2026-08-02 01:23:50 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRTM341 | ULS 4630451 | 2026-08-02 01:23:50 |
| Status | A | ULS 4630451 | 2026-08-02 01:23:50 |
| Service | IG | ULS 4630451 | 2026-08-02 01:23:50 |
| Grant Date | 2022-07-06 | ULS 4630451 | 2026-08-02 01:23:50 |
| Expiration Date | 2032-07-06 | ULS 4630451 | 2026-08-02 01:23:50 |