Universal Licensing System
WPWG471
Castle Airport - Aviation and Development Center
License details
| ULS identifier | 2459958 |
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| Call sign | WPWG471 |
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| Radio service | AR |
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| Status | A |
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| Grant date | 2017-09-20 |
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| Expiration | 2027-11-12 |
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| Frequency range | 109.5 MHz |
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| Locations | 1 |
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| Representative location | Atwater, MERCED, CA |
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| Coordinates | 37.3966667, -120.5838889 |
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| Source archive | l_coast.zip |
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| Dataset refreshed | 2026-08-02 02:08:12 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | RLL | 109.50000000 | | | 20.000000 | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 109.50000000 | | 2K04A1A |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
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| 1 | T | Castle Airport- 3450 C St., Atwater, MERCED, CA | 37.39666667, -120.58388889 | 58.800 m | NNTANN | 2.300 m structure / 2.300 m overall | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 2.300 m | H | 24.6000 | 130.0000 | | |
Control points
| Number | Address | County | Phone |
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| 1 | 3450 C St., Atwater, CA | MERCED | 2093847325 |
License history
| Date | File or call sign | Action |
|---|
| 2017-09-20 | WPWG471 | LIREN |
| 2017-08-21 | WPWG471 | LETRES |
| 2008-04-15 | WPWG471 | LIREN |
| 2007-10-26 | WPWG471 | ESUAPR |
| 2007-10-13 | WPWG471 | ESURNW |
| 2007-09-13 | WPWG471 | ESURNW |
| 2007-08-20 | WPWG471 | LETRES |
| 2007-08-14 | WPWG471 | ESURNW |
| 2005-07-27 | WPWG471 | ESUFRN |
| 2003-04-14 | WPWG471 | LETCNS |
| 2002-11-12 | WPWG471 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 2459958 | 2026-08-02 02:08:12 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPWG471 | ULS 2459958 | 2026-08-02 02:08:12 |
| Status | A | ULS 2459958 | 2026-08-02 02:08:12 |
| Service | AR | ULS 2459958 | 2026-08-02 02:08:12 |
| Grant Date | 2017-09-20 | ULS 2459958 | 2026-08-02 02:08:12 |
| Expiration Date | 2027-11-12 | ULS 2459958 | 2026-08-02 02:08:12 |