Universal Licensing System
WPRR891
BACKLINK IV, LLC
License details
| ULS identifier | 1937894 |
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| Call sign | WPRR891 |
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| Radio service | CF |
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| Status | C |
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| Grant date | 2001-01-04 |
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| Expiration | 2011-01-04 |
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| Cancellation | 2002-06-26 |
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| Frequency range | 18000 MHz |
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| Locations | 2 |
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| Representative location | San Francisco, SAN FRANCISCO, CA |
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| Coordinates | 37.7908333, -122.3999444 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:46:24 |
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Licensee
| Name | BACKLINK IV, LLC |
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| Applicant type | L |
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| Location | Herndon, VA |
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| Address | 460 Herndon Parkway, Suite 100, Herndon, VA, 20170 |
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| Phone | 7033264650 |
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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 |
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| 1 | 1 | FXO | 18000.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
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| 1 | 1 | 18000.00000000 | | 40M0F7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
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| 1 | T | 1 Bust St., San Francisco, SAN FRANCISCO, CA | 37.79083333, -122.39994444 | 4.900 m | BPOLE | 92.700 m structure / 92.700 m overall | |
| 2 | R | | 37.79258333, -122.39894444 | 3.000 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | Radio Waves Inc. HP2-18 | | H | 38.6000 | 24.4000 | | |
| 1 | 2 | R | Radio Waves Inc. HP2-18 | | | 38.6000 | | | |
License history
| Date | File or call sign | Action |
|---|
| 2002-06-27 | WPRR891 | LICAN |
| 2002-06-25 | WPRR891 | LIASS |
| 2001-09-07 | WPRR891 | LIASS |
| 2001-09-06 | WPRR891 | LITRAN |
| 2001-01-04 | WPRR891 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1937894 | 2026-08-02 02:46:24 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WPRR891 | ULS 1937894 | 2026-08-02 02:46:24 |
| Status | C | ULS 1937894 | 2026-08-02 02:46:24 |
| Service | CF | ULS 1937894 | 2026-08-02 02:46:24 |
| Grant Date | 2001-01-04 | ULS 1937894 | 2026-08-02 02:46:24 |
| Expiration Date | 2011-01-04 | ULS 1937894 | 2026-08-02 02:46:24 |
| Cancellation Date | 2002-06-26 | ULS 1937894 | 2026-08-02 02:46:24 |