Universal Licensing System
WRDW550
BOB, LLC dba Business Only Broadband
License details
| ULS identifier | 4186569 |
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| Call sign | WRDW550 |
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| Radio service | CF |
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| Status | C |
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| Grant date | 2019-08-06 |
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| Expiration | 2029-08-06 |
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| Cancellation | 2023-07-26 |
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| Frequency range | 19440 MHz |
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| Locations | 2 |
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| Representative location | Chicago, COOK, IL |
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| Coordinates | 41.8367778, -87.6291944 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:47:01 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FXO | 19440.00000000 | | | | | |
| 1 | 1 | FXO | 19440.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 19440.00000000 | | 36M2D7W |
| 1 | 1 | 19440.00000000 | | 35M8D7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 3140 S. Federal St., Chicago, COOK, IL | 41.83677778, -87.62919444 | 181.000 m | BMAST | 9.000 m structure / 12.000 m overall | |
| 2 | R | | 41.81536111, -87.68236111 | 181.300 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | RF Engineering & Energy R RFMA-1839UH06S | | V | 38.9000 | 241.7000 | | |
| 1 | 2 | R | RF Engineering & Energy R RFMA-1834UH03S | | | 34.2000 | 0.0000 | | |
License history
| Date | File or call sign | Action |
|---|
| 2023-07-27 | WRDW550 | LICAN |
| 2020-10-24 | WRDW550 | LITRAN |
| 2020-09-21 | WRDW550 | LITRAN |
| 2020-08-05 | WRDW550 | LIAUA |
| 2019-08-06 | WRDW550 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4186569 | 2026-08-02 02:47:01 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WRDW550 | ULS 4186569 | 2026-08-02 02:47:01 |
| Status | C | ULS 4186569 | 2026-08-02 02:47:01 |
| Service | CF | ULS 4186569 | 2026-08-02 02:47:01 |
| Grant Date | 2019-08-06 | ULS 4186569 | 2026-08-02 02:47:01 |
| Expiration Date | 2029-08-06 | ULS 4186569 | 2026-08-02 02:47:01 |
| Cancellation Date | 2023-07-26 | ULS 4186569 | 2026-08-02 02:47:01 |