Universal Licensing System
WRBX458
Drop Box Inc.
License details
| ULS identifier | 4066170 |
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| Call sign | WRBX458 |
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| Radio service | IG |
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| Status | A |
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| Grant date | 2018-07-17 |
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| Expiration | 2028-07-17 |
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| Frequency range | 451.1875 - 456.5875 MHz (4 frequencies) |
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| Locations | 4 |
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| Representative location | San Francisco, SAN FRANCISCO, CA |
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| Coordinates | 37.7833056, -122.3910556 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:19:50 |
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Licensee
| Name | Drop Box Inc. |
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| Applicant type | C |
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| FRN | 0022446108 |
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| Location | San Francisco, CA |
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| Address | 185 Berry St. Ste 400, San Francisco, CA, 941071725 |
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| Phone | 6508636172 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 3 | 1 | FB6 | 451.18750000 | | | 10.000000 | 10.000000 | |
| 4 | 1 | MO6 | 451.18750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | FB6 | 451.58750000 | | | 10.000000 | 10.000000 | |
| 2 | 1 | MO6 | 451.58750000 | | | 4.000000 | 4.000000 | |
| 4 | 1 | MO6 | 456.18750000 | | | 4.000000 | 4.000000 | |
| 2 | 1 | MO6 | 456.58750000 | | | 4.000000 | 4.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 3 | 1 | 451.18750000 | | 7K60FXE |
| 4 | 1 | 451.18750000 | | 7K60FXE |
| 1 | 1 | 451.58750000 | | 7K60FXE |
| 2 | 1 | 451.58750000 | | 7K60FXE |
| 4 | 1 | 456.18750000 | | 7K60FXE |
| 2 | 1 | 456.58750000 | | 7K60FXE |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 250 Brannan St., San Francisco, SAN FRANCISCO, CA | 37.78330556, -122.39105556 | 6.000 m | B | 9.100 m structure / 9.100 m overall | |
| 2 | T | | | | | | |
| 3 | T | 200 West Evelyn Ave, Mountain View, SANTA CLARA, CA | 37.39291667, -122.07272222 | 24.000 m | B | 6.100 m structure / 6.100 m overall | |
| 4 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 6.100 m | | | | -5.100 | |
| 1 | 2 | T | | | | | | | |
| 1 | 3 | T | | 4.600 m | | | | -66.700 | |
| 1 | 4 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 185 Berry St. Ste 400, San Francisco, CA | SAN FRANCISCO | 6508636172 |
License history
| Date | File or call sign | Action |
|---|
| 2019-04-16 | WRBX458 | LETCNS |
| 2018-07-17 | WRBX458 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4066170 | 2026-08-02 01:19:50 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRBX458 | ULS 4066170 | 2026-08-02 01:19:50 |
| Status | A | ULS 4066170 | 2026-08-02 01:19:50 |
| Service | IG | ULS 4066170 | 2026-08-02 01:19:50 |
| Grant Date | 2018-07-17 | ULS 4066170 | 2026-08-02 01:19:50 |
| Expiration Date | 2028-07-17 | ULS 4066170 | 2026-08-02 01:19:50 |