Universal Licensing System
WQHM253
California Institute of Technology
License details
| ULS identifier | 2942930 |
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| Call sign | WQHM253 |
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| Radio service | IG |
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| Status | A |
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| Grant date | 2017-07-14 |
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| Expiration | 2027-09-06 |
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| Frequency range | 451.3375 - 457.6375 MHz (5 frequencies) |
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| Locations | 1 |
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| Representative location | Pasadena, LOS ANGELES, CA |
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| Coordinates | 34.1338056, -118.1275833 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:18:46 |
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Licensee
| Name | California Institute of Technology |
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| Applicant type | C |
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| FRN | 0017002668 |
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| Location | Pasadena, CA |
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| Address | 1200 E California Boulevard, Braun Athletic Center, MC1-2, Pasadena, CA, 911250001 |
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| Phone | 6263953165 |
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| Email | [email protected] |
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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 | 452.18750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 452.63750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 457.18750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 457.63750000 | | | 4.000000 | 4.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 451.33750000 | | 11K0F3E |
| 1 | 1 | 452.18750000 | | 11K0F3E |
| 1 | 1 | 452.63750000 | | 11K0F3E |
| 1 | 1 | 457.18750000 | | 11K0F3E |
| 1 | 1 | 457.63750000 | | 11K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | Pasadena, LOS ANGELES, CA | 34.13380556, -118.12758333 | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | | | | | | | | |
Control points
| Number | Address | County | Phone |
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| 1 | 1200 E California Boulevard, Braun Athletic Center, MC1-2, Pasadena, CA | LOS ANGELES | 6263953253 |
License history
| Date | File or call sign | Action |
|---|
| 2017-07-14 | WQHM253 | LIREN |
| 2017-06-12 | WQHM253 | LETRES |
| 2007-11-02 | WQHM253 | LIAUA |
| 2007-11-01 | WQHM253 | ESUAPR |
| 2007-10-09 | WQHM253 | ESUFNR |
| 2007-09-06 | WQHM253 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 2942930 | 2026-08-02 01:18:46 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WQHM253 | ULS 2942930 | 2026-08-02 01:18:46 |
| Status | A | ULS 2942930 | 2026-08-02 01:18:46 |
| Service | IG | ULS 2942930 | 2026-08-02 01:18:46 |
| Grant Date | 2017-07-14 | ULS 2942930 | 2026-08-02 01:18:46 |
| Expiration Date | 2027-09-06 | ULS 2942930 | 2026-08-02 01:18:46 |