Universal Licensing System
WPQX479
BACKLINK IV, LLC
License details
| ULS identifier | 1305250 |
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| Call sign | WPQX479 |
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| Radio service | CF |
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| Status | C |
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| Grant date | 2000-11-06 |
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| Expiration | 2010-11-06 |
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| Cancellation | 2002-06-26 |
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| Frequency range | 17800 - 18120 MHz (5 frequencies) |
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| Locations | 5 |
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| Coordinates | 34.0440833, -118.4681944 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-09 15:43:33 |
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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 | 7 | FXO | 17800.00000000 | | | | | |
| 1 | 4 | FXO | 17840.00000000 | | | | | |
| 1 | 5 | FXO | 17920.00000000 | | | | | |
| 1 | 3 | FXO | 18040.00000000 | | | | | |
| 1 | 6 | FXO | 18040.00000000 | | | | | |
| 1 | 2 | FXO | 18120.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 7 | 17800.00000000 | | 40M0F7W |
| 1 | 4 | 17840.00000000 | | 40M0F7W |
| 1 | 5 | 17920.00000000 | | 40M0F7W |
| 1 | 3 | 18040.00000000 | | 40M0F7W |
| 1 | 6 | 18040.00000000 | | 40M0F7W |
| 1 | 2 | 18120.00000000 | | 40M0F7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 2001 SANTA MONICA BLVD, SANTA MONICA, LOS ANGELES, CA | 34.02938889, -118.47955556 | 46.000 m | BPOLE | 34.100 m structure / 36.300 m overall | N |
| 3 | R | | 34.01488889, -118.49091667 | 22.900 m | | | |
| 4 | R | | 34.04408333, -118.46819444 | 73.200 m | | | |
| 5 | R | | 34.02208333, -118.46555556 | 44.800 m | | | |
| 6 | R | | 34.04136111, -118.44363889 | 62.800 m | | | |
| 7 | R | | 34.01602778, -118.49166667 | 24.100 m | | | |
| 8 | R | | 34.03275000, -118.48197222 | 57.000 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 3 | R | Radio Waves Inc. HP2-18 | | | 38.6000 | | | |
| 1 | 4 | R | Radio Waves Inc. HP2-18 | | | 38.6000 | | | |
| 1 | 5 | R | Radio Waves Inc. HP2-18 | | | 38.6000 | | | |
| 1 | 6 | R | Radio Waves Inc. HP2-18 | | | 38.6000 | | | |
| 1 | 7 | R | Radio Waves Inc. HP2-18 | | | 38.6000 | | | |
| 1 | 8 | R | Radio Waves Inc. HP2-18 | | | 38.6000 | | | |
| 2 | 1 | T | Radio Waves Inc. HP2-18 | | V | 38.6000 | 213.1000 | | |
| 3 | 1 | T | Radio Waves Inc. HP2-18 | | V | 38.6000 | 32.8000 | | |
| 4 | 1 | T | Radio Waves Inc. HP2-18 | | V | 38.6000 | 122.1000 | | |
| 5 | 1 | T | Radio Waves Inc. HP2-18 | | V | 38.6000 | 68.2000 | | |
| 6 | 1 | T | Radio Waves Inc. HP2-18 | | V | 38.6000 | 217.0000 | | |
| 7 | 1 | T | Radio Waves Inc. HP2-18 | | V | 38.6000 | 329.1000 | | |
License history
| Date | File or call sign | Action |
|---|
| 2002-06-27 | WPQX479 | LICAN |
| 2002-06-25 | WPQX479 | LIASS |
| 2001-09-07 | WPQX479 | LIASS |
| 2001-09-06 | WPQX479 | LITRAN |
| 2001-05-02 | WPQX479 | LIMOD |
| 2000-11-06 | WPQX479 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1305250 | 2026-08-09 15:43:33 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WPQX479 | ULS 1305250 | 2026-08-09 15:43:33 |
| Status | C | ULS 1305250 | 2026-08-09 15:43:33 |
| Service | CF | ULS 1305250 | 2026-08-09 15:43:33 |
| Grant Date | 2000-11-06 | ULS 1305250 | 2026-08-09 15:43:33 |
| Expiration Date | 2010-11-06 | ULS 1305250 | 2026-08-09 15:43:33 |
| Cancellation Date | 2002-06-26 | ULS 1305250 | 2026-08-09 15:43:33 |