Universal Licensing System
WPQX820
BACKLINK IV, LLC
License details
| ULS identifier | 1306379 |
|---|
| Call sign | WPQX820 |
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| Radio service | CF |
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| Status | C |
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| Grant date | 2000-11-15 |
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| Expiration | 2010-11-15 |
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| Cancellation | 2002-06-26 |
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| Frequency range | 19480 - 21775 MHz (8 frequencies) |
|---|
| Locations | 3 |
|---|
| Coordinates | 41.8781944, -87.6429167 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-09 15:43:27 |
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Licensee
| Name | BACKLINK IV, LLC |
|---|
| 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 | 3 | FXO | 19480.00000000 | | | | | |
| 1 | 5 | FXO | 19520.00000000 | | | | | |
| 1 | 4 | FXO | 19560.00000000 | | | | | |
| 1 | 9 | FXO | 19560.00000000 | | | | | |
| 1 | 6 | FXO | 19680.00000000 | | | | | |
| 1 | 8 | FXO | 21375.00000000 | | | | | |
| 1 | 2 | FXO | 21525.00000000 | | | | | |
| 1 | 7 | FXO | 21725.00000000 | | | | | |
| 1 | 1 | FXO | 21775.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 3 | 19480.00000000 | | 40M0F7W |
| 1 | 5 | 19520.00000000 | | 40M0F7W |
| 1 | 4 | 19560.00000000 | | 40M0F7W |
| 1 | 9 | 19560.00000000 | | 40M0F7W |
| 1 | 6 | 19680.00000000 | | 40M0F7W |
| 1 | 8 | 21375.00000000 | | 40M0F7W |
| 1 | 2 | 21525.00000000 | | 40M0F7W |
| 1 | 7 | 21725.00000000 | | 40M0F7W |
| 1 | 1 | 21775.00000000 | | 40M0F7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 2233 Throop St., Chicago, COOK, IL | 41.85125000, -87.65827778 | 175.300 m | BPOLE | 76.800 m structure / 76.800 m overall | N |
| 2 | R | | 41.87986111, -87.63627778 | 181.400 m | | | |
| 3 | R | | 41.87800000, -87.63477778 | 181.400 m | | | |
| 4 | R | | 41.87933333, -87.62505556 | 182.900 m | | | |
| 5 | R | | 41.86000000, -87.68611111 | 181.400 m | | | |
| 6 | R | | 41.85416667, -87.62294444 | 175.300 m | | | |
| 7 | R | | 41.85755556, -87.63613889 | 179.800 m | | | |
| 8 | R | | 41.87819444, -87.64291667 | 176.800 m | | | |
| 9 | R | | 41.85541667, -87.64638889 | 179.800 m | | | |
| 10 | R | | 41.85577778, -87.64683333 | 179.800 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | Radio Waves Inc. HPLP1.5-23 | | V | 37.8000 | 29.9000 | | |
| 1 | 2 | R | Radio Waves Inc. HPLP1.5-23 | | | 37.8000 | | | |
| 1 | 3 | R | Radio Waves Inc. HPLP1.5-23 | | | 37.8000 | | | |
| 1 | 4 | R | Radio Waves Inc. HP2-18 | | | 39.0000 | | | |
| 1 | 5 | R | Radio Waves Inc. HP2-18 | | | 39.0000 | | | |
| 1 | 6 | R | Radio Waves Inc. HP2-18 | | | 39.0000 | | | |
| 1 | 7 | R | Radio Waves Inc. HP2-18 | | | 39.0000 | | | |
| 1 | 8 | R | Radio Waves Inc. HPLP1.5-23 | | | 37.2000 | | | |
| 1 | 9 | R | Radio Waves Inc. HPLP1.5-23 | | | 37.2000 | | | |
| 1 | 10 | R | Radio Waves Inc. HP2-18 | | | 38.6000 | | | |
| 2 | 1 | T | Radio Waves Inc. HPLP1.5-23 | | V | 37.8000 | 33.3000 | | |
| 3 | 1 | T | Radio Waves Inc. HP2-18 | | H | 39.0000 | 41.5000 | | |
| 4 | 1 | T | Radio Waves Inc. HP2-18 | | V | 39.0000 | 292.8000 | | |
| 5 | 1 | T | Radio Waves Inc. HP2-18 | | H | 39.0000 | 83.7000 | | |
| 6 | 1 | T | Radio Waves Inc. HP2-18 | | H | 39.0000 | 69.1000 | | |
| 7 | 1 | T | Radio Waves Inc. HPLP1.5-23 | | H | 37.2000 | 23.1000 | | |
| 8 | 1 | T | Radio Waves Inc. HPLP1.5-23 | | V | 37.2000 | 64.9000 | | |
| 9 | 1 | T | Radio Waves Inc. HP2-18 | | H | 38.6000 | 62.1000 | | |
License history
| Date | File or call sign | Action |
|---|
| 2002-06-27 | WPQX820 | LICAN |
| 2002-06-25 | WPQX820 | LIASS |
| 2001-09-07 | WPQX820 | LIASS |
| 2001-09-06 | WPQX820 | LITRAN |
| 2001-06-20 | WPQX820 | LIMOD |
| 2000-11-15 | WPQX820 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1306379 | 2026-08-09 15:43:27 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPQX820 | ULS 1306379 | 2026-08-09 15:43:27 |
| Status | C | ULS 1306379 | 2026-08-09 15:43:27 |
| Service | CF | ULS 1306379 | 2026-08-09 15:43:27 |
| Grant Date | 2000-11-15 | ULS 1306379 | 2026-08-09 15:43:27 |
| Expiration Date | 2010-11-15 | ULS 1306379 | 2026-08-09 15:43:27 |
| Cancellation Date | 2002-06-26 | ULS 1306379 | 2026-08-09 15:43:27 |