Universal Licensing System
WPQX821
BACKLINK IV, LLC
License details
| ULS identifier | 1306380 |
|---|
| Call sign | WPQX821 |
|---|
| Radio service | CF |
|---|
| Status | C |
|---|
| Grant date | 2000-11-15 |
|---|
| Expiration | 2010-11-15 |
|---|
| Cancellation | 2002-06-26 |
|---|
| Frequency range | 22975 MHz |
|---|
| Locations | 2 |
|---|
| Representative location | Chicago, COOK, IL |
|---|
| Coordinates | 41.8798611, -87.6362778 |
|---|
| Source archive | l_micro.zip |
|---|
| Dataset refreshed | 2026-08-09 15:43:41 |
|---|
Licensee
| Name | BACKLINK IV, LLC |
|---|
| Applicant type | L |
|---|
| Location | Herndon, VA |
|---|
| Address | 460 Herndon Parkway, Suite 100, Herndon, VA, 20170 |
|---|
| Phone | 7033264650 |
|---|
| Email | [email protected] |
|---|
Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FXO | 22975.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 22975.00000000 | | 40M0F7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 125 S Wacker Dr, Chicago, COOK, IL | 41.87986111, -87.63627778 | 181.400 m | BPOLE | 144.200 m structure / 146.900 m overall | |
| 2 | R | | 41.85125000, -87.65827778 | 175.300 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 | 209.9000 | | |
| 1 | 2 | R | Radio Waves Inc. HPLP1.5-23 | | | 37.8000 | | | |
License history
| Date | File or call sign | Action |
|---|
| 2002-06-27 | WPQX821 | LICAN |
| 2002-06-25 | WPQX821 | LIASS |
| 2001-09-07 | WPQX821 | LIASS |
| 2001-09-06 | WPQX821 | LITRAN |
| 2000-11-15 | WPQX821 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1306380 | 2026-08-09 15:43:41 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPQX821 | ULS 1306380 | 2026-08-09 15:43:41 |
| Status | C | ULS 1306380 | 2026-08-09 15:43:41 |
| Service | CF | ULS 1306380 | 2026-08-09 15:43:41 |
| Grant Date | 2000-11-15 | ULS 1306380 | 2026-08-09 15:43:41 |
| Expiration Date | 2010-11-15 | ULS 1306380 | 2026-08-09 15:43:41 |
| Cancellation Date | 2002-06-26 | ULS 1306380 | 2026-08-09 15:43:41 |