Universal Licensing System
WPRS221
BACKLINK IV, LLC
License details
| ULS identifier | 1938334 |
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| Call sign | WPRS221 |
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| Radio service | CF |
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| Status | C |
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| Grant date | 2001-01-09 |
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| Expiration | 2011-01-09 |
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| Cancellation | 2002-06-26 |
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| Frequency range | 19360 - 19640 MHz (4 frequencies) |
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| Locations | 5 |
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| Representative location | Walnut Creek, CONTRA COSTA, CA |
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| Coordinates | 37.9030278, -122.0610278 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:46:30 |
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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 |
|---|
| 1 | 2 | FXO | 19360.00000000 | | | | | |
| 1 | 4 | FXO | 19440.00000000 | | | | | |
| 1 | 3 | FXO | 19560.00000000 | | | | | |
| 1 | 1 | FXO | 19640.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 2 | 19360.00000000 | | 40M0F7W |
| 1 | 4 | 19440.00000000 | | 40M0F7W |
| 1 | 3 | 19560.00000000 | | 40M0F7W |
| 1 | 1 | 19640.00000000 | | 40M0F7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 1700 N Broadway, Walnut Creek, CONTRA COSTA, CA | 37.90302778, -122.06102778 | 40.800 m | BPOLE | 20.100 m structure / 20.100 m overall | |
| 2 | R | | 37.90730556, -122.06547222 | 53.000 m | | | |
| 3 | R | | 37.90080556, -122.06077778 | 39.900 m | | | |
| 4 | R | | 37.90030556, -122.06063889 | 42.100 m | | | |
| 5 | R | | 37.89319444, -122.05911111 | 46.000 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 | | V | 39.0000 | 320.5000 | | |
| 1 | 2 | R | Radio Waves Inc. HP2-18 | | | 39.0000 | | | |
| 1 | 3 | R | Radio Waves Inc. HP2-18 | | | 39.0000 | | | |
| 1 | 4 | R | Radio Waves Inc. HP2-18 | | | 39.0000 | | | |
| 1 | 5 | R | Radio Waves Inc. HP2-18 | | | 38.6000 | | | |
| 2 | 1 | T | Radio Waves Inc. HP2-18 | | H | 39.0000 | 174.9000 | | |
| 3 | 1 | T | Radio Waves Inc. HP2-18 | | V | 39.0000 | 173.5000 | | |
| 4 | 1 | T | Radio Waves Inc. HP2-18 | | V | 38.6000 | 171.2000 | | |
License history
| Date | File or call sign | Action |
|---|
| 2002-06-27 | WPRS221 | LICAN |
| 2002-06-25 | WPRS221 | LIASS |
| 2002-04-11 | WPRS221 | LETCNS |
| 2001-09-07 | WPRS221 | LIASS |
| 2001-09-06 | WPRS221 | LITRAN |
| 2001-06-04 | WPRS221 | LIMOD |
| 2001-01-09 | WPRS221 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1938334 | 2026-08-02 02:46:30 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WPRS221 | ULS 1938334 | 2026-08-02 02:46:30 |
| Status | C | ULS 1938334 | 2026-08-02 02:46:30 |
| Service | CF | ULS 1938334 | 2026-08-02 02:46:30 |
| Grant Date | 2001-01-09 | ULS 1938334 | 2026-08-02 02:46:30 |
| Expiration Date | 2011-01-09 | ULS 1938334 | 2026-08-02 02:46:30 |
| Cancellation Date | 2002-06-26 | ULS 1938334 | 2026-08-02 02:46:30 |