Universal Licensing System
WPQX250
BACKLINK IV, LLC
License details
| ULS identifier | 1304657 |
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| Call sign | WPQX250 |
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| Radio service | CF |
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| Status | C |
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| Grant date | 2000-10-31 |
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| Expiration | 2010-10-31 |
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| Cancellation | 2002-06-26 |
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| Frequency range | 18120 MHz |
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| Locations | 2 |
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| Representative location | Lisle, DUPAGE, IL |
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| Coordinates | 41.8097500, -88.0632500 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-09 15:43:39 |
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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 | 18120.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 18120.00000000 | | 40M0F7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
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| 1 | T | 550 Warrenville Rd, Lisle, DUPAGE, IL | 41.80975000, -88.06325000 | 205.700 m | BPOLE | 27.700 m structure / 28.300 m overall | |
| 2 | R | | 41.80752778, -88.06819444 | 210.300 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 | 239.0000 | | |
| 1 | 2 | R | Radio Waves Inc. HP2-18 | | | 39.0000 | | | |
License history
| Date | File or call sign | Action |
|---|
| 2002-06-27 | WPQX250 | LICAN |
| 2002-06-25 | WPQX250 | LIASS |
| 2001-09-07 | WPQX250 | LIASS |
| 2001-09-06 | WPQX250 | LITRAN |
| 2000-10-31 | WPQX250 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1304657 | 2026-08-09 15:43:39 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPQX250 | ULS 1304657 | 2026-08-09 15:43:39 |
| Status | C | ULS 1304657 | 2026-08-09 15:43:39 |
| Service | CF | ULS 1304657 | 2026-08-09 15:43:39 |
| Grant Date | 2000-10-31 | ULS 1304657 | 2026-08-09 15:43:39 |
| Expiration Date | 2010-10-31 | ULS 1304657 | 2026-08-09 15:43:39 |
| Cancellation Date | 2002-06-26 | ULS 1304657 | 2026-08-09 15:43:39 |