Universal Licensing System
WHJ421
AlarmNet Inc
License details
| ULS identifier | 982566 |
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| Call sign | WHJ421 |
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| Radio service | MG |
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| Status | C |
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| Grant date | 2011-07-08 |
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| Expiration | 2021-09-05 |
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| Cancellation | 2015-11-09 |
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| Frequency range | 928.0375 - 952.2375 MHz (4 frequencies) |
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| Locations | 1 |
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| Representative location | LOS ANGELES, LOS ANGELES, CA |
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| Coordinates | 34.0763889, -118.6584167 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:46:56 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 3 | FXO | 928.03750000 | | | | | |
| 1 | 3 | FXO | 928.23750000 | | | | | |
| 1 | 1 | FXO | 952.03750000 | | | | | |
| 1 | 1 | FXO | 952.23750000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 3 | 928.03750000 | | 15K0F2D |
| 1 | 3 | 928.23750000 | | 15K0F2D |
| 1 | 1 | 952.03750000 | | 25K0F2D |
| 1 | 1 | 952.23750000 | | 25K0F2D |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | SADDLE PEAK MERIDIAN BLDG, LOS ANGELES, LOS ANGELES, CA | 34.07638889, -118.65841667 | 864.400 m | | 19.800 m overall | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | V | 10.0000 | 360.0000 | | |
| 2 | 1 | R | | | | | | | |
| 3 | 1 | T | | | V | | 360.0000 | | |
| 4 | 1 | R | | | | 10.0000 | | | |
License history
| Date | File or call sign | Action |
|---|
| 2015-11-09 | WHJ421 | LICAN |
| 2015-11-06 | WHJ421 | ESUAPR |
| 2011-07-08 | WHJ421 | LIREN |
| 2011-07-07 | WHJ421 | ESCAPR |
| 2011-06-13 | WHJ421 | LETRES |
| 2003-03-31 | WHJ421 | LITRAN |
| 2001-12-31 | WHJ421 | LIASS |
| 2001-08-23 | WHJ421 | LIREN |
| 2001-06-11 | WHJ421 | LETRES |
| 2000-02-04 | WHJ421 | LITRAN |
| 1999-08-13 | WHJ421 | LICCNV |
| 1998-12-01 | WHJ421 | COR |
| 1998-08-24 | WHJ421 | COR |
| 1996-07-08 | WHJ421 | LIREN |
| 1991-09-05 | WHJ421 | LIMOD |
| 1991-07-30 | WHJ421 | LIMOD |
| 1986-08-08 | WHJ421 | LIMOD |
| 1983-08-23 | WHJ421 | LIMOD |
| 1983-07-22 | WHJ421 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 982566 | 2026-08-02 02:46:56 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WHJ421 | ULS 982566 | 2026-08-02 02:46:56 |
| Status | C | ULS 982566 | 2026-08-02 02:46:56 |
| Service | MG | ULS 982566 | 2026-08-02 02:46:56 |
| Grant Date | 2011-07-08 | ULS 982566 | 2026-08-02 02:46:56 |
| Expiration Date | 2021-09-05 | ULS 982566 | 2026-08-02 02:46:56 |
| Cancellation Date | 2015-11-09 | ULS 982566 | 2026-08-02 02:46:56 |