Universal Licensing System
WPLT831
CRYSTAL SMR INC.
License details
| ULS identifier | 1787798 |
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| Call sign | WPLT831 |
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| Radio service | IG |
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| Status | A |
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| Grant date | 2023-01-30 |
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| Expiration | 2033-02-05 |
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| Frequency range | 484.275 - 487.275 MHz (2 frequencies) |
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| Locations | 2 |
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| Representative location | FREMONT, ALAMEDA, CA |
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| Coordinates | 37.4874444, -121.8685556 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:14:20 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB6 | 484.27500000 | | | 25.000000 | 5.000000 | |
| 2 | 1 | MO | 487.27500000 | | | 2.000000 | 2.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 484.27500000 | | 7K60FXD |
| 1 | 1 | 484.27500000 | | 4K00F1E |
| 1 | 1 | 484.27500000 | | 11K2F2D |
| 1 | 1 | 484.27500000 | | 7K60FXE |
| 1 | 1 | 484.27500000 | | 11K2F3E |
| 1 | 1 | 484.27500000 | | 4K00F1D |
| 1 | 1 | 484.27500000 | | 11K2F1D |
| 2 | 1 | 487.27500000 | | 7K60FXE |
| 2 | 1 | 487.27500000 | | 11K2F2D |
| 2 | 1 | 487.27500000 | | 11K2F3E |
| 2 | 1 | 487.27500000 | | 4K00F1D |
| 2 | 1 | 487.27500000 | | 4K00F1E |
| 2 | 1 | 487.27500000 | | 11K2F1D |
| 2 | 1 | 487.27500000 | | 7K60FXD |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | MISSION RIDGE, FREMONT, ALAMEDA, CA | 37.48744444, -121.86855556 | 775.000 m | GTOWER | 43.000 m structure / 43.000 m overall | N |
| 2 | T | | | | | | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 43.000 m | | | | 586.000 | |
| 1 | 2 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 2 | 1601 Neptune Drive, San Leandro, CA | ALAMEDA | 5108959500 |
| 3 | 1601 Neptune Drive, San Leandro, CA | ALAMEDA | 5108959500 |
License history
| Date | File or call sign | Action |
|---|
| 2023-01-30 | WPLT831 | LIREN |
| 2016-03-08 | WPLT831 | LIMOD |
| 2013-02-05 | WPLT831 | LTSAPR |
| 2013-02-05 | WPLT831 | LIREN |
| 2012-11-12 | WPLT831 | LETRES |
| 2003-04-22 | WPLT831 | AUDOPR |
| 2003-01-28 | WPLT831 | LIREN |
| 2002-11-12 | WPLT831 | LETRES |
| 2001-09-16 | WPLT831 | LIASS |
| 2000-11-23 | WPLT831 | COR |
| 2000-11-23 | WPLT831 | LICCNV |
| 1999-08-09 | WPLT831 | AUTHPR |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1787798 | 2026-08-02 01:14:20 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPLT831 | ULS 1787798 | 2026-08-02 01:14:20 |
| Status | A | ULS 1787798 | 2026-08-02 01:14:20 |
| Service | IG | ULS 1787798 | 2026-08-02 01:14:20 |
| Grant Date | 2023-01-30 | ULS 1787798 | 2026-08-02 01:14:20 |
| Expiration Date | 2033-02-05 | ULS 1787798 | 2026-08-02 01:14:20 |