Universal Licensing System
WPXP423
Signature Flight Support
License details
| ULS identifier | 2513408 |
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| Call sign | WPXP423 |
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| Radio service | YG |
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| Status | E |
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| Grant date | 2013-07-01 |
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| Expiration | 2023-05-14 |
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| Cancellation | 2023-07-15 |
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| Frequency range | 452.0125 - 467.025 MHz (4 frequencies) |
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| Locations | 3 |
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| Representative location | San Francisco, SAN MATEO, CA |
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| Coordinates | 37.6343889, -122.3966111 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:20:16 |
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Licensee
| Name | Signature Flight Support |
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| Applicant type | C |
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| FRN | 0021699426 |
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| Location | San Francisco, CA |
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| Address | NROTH ACCESS RD SFIA 1052, San Francisco, CA, 94128 |
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| Phone | 6508776808 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB2 | 452.01250000 | | | 25.000000 | 50.000000 | |
| 2 | 1 | MO | 452.01250000 | | | 4.000000 | 4.000000 | |
| 2 | 1 | MO | 457.01250000 | | | 4.000000 | 4.000000 | |
| 3 | 1 | FX1 | 457.01250000 | | | 25.000000 | 50.000000 | |
| 1 | 1 | FB2 | 462.02500000 | | | 25.000000 | 50.000000 | |
| 2 | 1 | MO | 462.02500000 | | | 4.000000 | 4.000000 | |
| 2 | 1 | MO | 467.02500000 | | | 4.000000 | 4.000000 | |
| 3 | 1 | FX1 | 467.02500000 | | | 25.000000 | 50.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 452.01250000 | | 11K2F3E |
| 2 | 1 | 452.01250000 | | 11K2F3E |
| 2 | 1 | 457.01250000 | | 11K2F3E |
| 3 | 1 | 457.01250000 | | 11K2F3E |
| 1 | 1 | 462.02500000 | | 11K2F3E |
| 2 | 1 | 462.02500000 | | 11K2F3E |
| 2 | 1 | 467.02500000 | | 11K2F3E |
| 3 | 1 | 467.02500000 | | 11K2F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
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| 1 | T | North Access Rd SFIA, San Francisco, SAN MATEO, CA | 37.63438889, -122.39661111 | 4.300 m | B | 13.000 m structure / 13.000 m overall | |
| 2 | T | | | | | | |
| 3 | T | CA | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | | | 13.000 m | | 0.0000 | 0.0000 | -42.300 | |
| 1 | 2 | | | | | | | | |
| 1 | 3 | | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | North Access Rd SFIA, San Francisco, CA | SAN MATEO | 6508776808 |
License history
| Date | File or call sign | Action |
|---|
| 2023-07-15 | WPXP423 | LIEXP |
| 2013-12-20 | WPXP423 | LTSFNR |
| 2013-07-01 | WPXP423 | LIREN |
| 2013-03-12 | WPXP423 | LTSAPR |
| 2013-02-18 | WPXP423 | LETRES |
| 2004-02-09 | WPXP423 | LETCNS |
| 2003-05-14 | WPXP423 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
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| ULS | 2513408 | 2026-08-02 01:20:16 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WPXP423 | ULS 2513408 | 2026-08-02 01:20:16 |
| Status | E | ULS 2513408 | 2026-08-02 01:20:16 |
| Service | YG | ULS 2513408 | 2026-08-02 01:20:16 |
| Grant Date | 2013-07-01 | ULS 2513408 | 2026-08-02 01:20:16 |
| Expiration Date | 2023-05-14 | ULS 2513408 | 2026-08-02 01:20:16 |
| Cancellation Date | 2023-07-15 | ULS 2513408 | 2026-08-02 01:20:16 |