Universal Licensing System
WPMM518
Motient Communications Inc.
License details
| ULS identifier | 1583401 |
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| Call sign | WPMM518 |
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| Radio service | GB |
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| Status | C |
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| Grant date | 1998-09-18 |
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| Expiration | 2008-09-18 |
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| Cancellation | 2004-02-20 |
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| Frequency range | 810.0125 - 855.0125 MHz (2 frequencies) |
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| Locations | 2 |
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| Representative location | CORONA, RIVERSIDE, CA |
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| Coordinates | 33.8500278, -117.6522778 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:14:04 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 2 | 1 | MO | 810.01250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | FB6C | 855.01250000 | | | 45.000000 | 160.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 2 | 1 | 810.01250000 | | 20K0F1D |
| 1 | 1 | 855.01250000 | | 20K0F1D |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | SIERRA PEAK (MOUNTAIN PEAK), CORONA, RIVERSIDE, CA | 33.85002778, -117.65227778 | 928.000 m | TOWER | 12.000 m structure / 37.000 m overall | N |
| 2 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 12.000 m | | | | 563.000 | |
| 1 | 2 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 300 KNIGHTSBRIDGE PKY, LINCOLNSHIRE, IL | | 8474784212 |
License history
| Date | File or call sign | Action |
|---|
| 2004-02-21 | WPMM518 | LICAN |
| 2002-06-18 | WPMM518 | LIAUA |
| 2002-04-26 | WPMM518 | LIASS |
| 2002-03-05 | WPMM518 | LIASS |
| 2002-02-20 | WPMM518 | LIASS |
| 2000-11-22 | WPMM518 | LICCNV |
| 2000-06-22 | WPMM518 | AUTHPR |
| 2000-05-31 | WPMM518 | LITRAN |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1583401 | 2026-08-02 01:14:04 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPMM518 | ULS 1583401 | 2026-08-02 01:14:04 |
| Status | C | ULS 1583401 | 2026-08-02 01:14:04 |
| Service | GB | ULS 1583401 | 2026-08-02 01:14:04 |
| Grant Date | 1998-09-18 | ULS 1583401 | 2026-08-02 01:14:04 |
| Expiration Date | 2008-09-18 | ULS 1583401 | 2026-08-02 01:14:04 |
| Cancellation Date | 2004-02-20 | ULS 1583401 | 2026-08-02 01:14:04 |