Universal Licensing System
KFX4
Aviation Spectrum Resources Inc
License details
| ULS identifier | 1965623 |
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| Call sign | KFX4 |
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| Radio service | AF |
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| Status | C |
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| Grant date | 2004-02-10 |
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| Expiration | 2009-03-12 |
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| Cancellation | 2009-02-05 |
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| Frequency range | 131 MHz |
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| Locations | 1 |
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| Representative location | Riverside, RIVERSIDE, CA |
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| Coordinates | 33.8805000, -117.2595000 |
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| Source archive | l_coast.zip |
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| Dataset refreshed | 2026-08-02 02:08:25 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
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| 1 | 1 | FA | 131.00000000 | | | 55.000000 | | LL |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
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| 1 | 1 | 131.00000000 | | 6K00A3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
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| 1 | T | March ARB Airport, Riverside, RIVERSIDE, CA | 33.88050000, -117.25950000 | 468.000 m | BANT | 9.000 m structure / 11.000 m overall | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
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| 1 | 1 | T | | 11.000 m | | | | | |
License history
| Date | File or call sign | Action |
|---|
| 2009-02-06 | KFX4 | LICAN |
| 2008-12-15 | KFX4 | LETRES |
| 2007-03-01 | KFX4 | AUTHPR |
| 2006-03-07 | KFX4 | AUTHPR |
| 2006-01-01 | KFX4 | LIASS |
| 2005-09-01 | KFX4 | LIMOD |
| 2005-07-25 | KFX4 | ESCAPR |
| 2005-07-18 | KFX4 | ESCAPR |
| 2004-02-10 | KFX4 | LIREN |
| 2003-12-15 | KFX4 | LETRES |
| 2001-04-27 | KFX4 | LICCNV |
Sources and provenance
| Source | Source record | Retrieved | Match |
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| ULS | 1965623 | 2026-08-02 02:08:25 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | KFX4 | ULS 1965623 | 2026-08-02 02:08:25 |
| Status | C | ULS 1965623 | 2026-08-02 02:08:25 |
| Service | AF | ULS 1965623 | 2026-08-02 02:08:25 |
| Grant Date | 2004-02-10 | ULS 1965623 | 2026-08-02 02:08:25 |
| Expiration Date | 2009-03-12 | ULS 1965623 | 2026-08-02 02:08:25 |
| Cancellation Date | 2009-02-05 | ULS 1965623 | 2026-08-02 02:08:25 |