Universal Licensing System
WFD540
WINDOW TO THE WORLD COMMUNICATIONS, INC.
License details
| ULS identifier | 976698 |
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| Call sign | WFD540 |
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| Radio service | TI |
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| Status | A |
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| Grant date | 1979-04-17 |
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| Expiration | 2029-12-01 |
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| Frequency range | 6900 - 6925 MHz (2 frequencies) |
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| Locations | 2 |
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| Representative location | CHICAGO, COOK, IL |
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| Coordinates | 41.8869722, -87.6230833 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-07-29 23:40:06 |
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Licensee
| Name | WINDOW TO THE WORLD COMMUNICATIONS, INC. |
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| Applicant type | C |
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| FRN | 0002860179 |
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| Location | CHICAGO, IL |
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| Address | 5400 NORTH ST. LOUIS AVE, CHICAGO, IL, 60625 |
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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 | 6900.00000000 | 6925.00000000 | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
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| 1 | 1 | 6900.00000000 | | 25M0F9W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
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| 1 | T | 2 ILLINOIS CTR 233 N MICHIGAN AVE, CHICAGO, COOK, IL | 41.88697222, -87.62308333 | 182.300 m | | 134.700 m structure / 103.600 m overall | |
| 2 | R | | 41.87891667, -87.63613889 | 180.700 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | H | | 231.0000 | | |
| 1 | 2 | R | | | | | | | |
License history
| Date | File or call sign | Action |
|---|
| 2026-05-27 | WFD540 | PNACT |
| 2026-05-23 | WFD540 | PLAUPR |
| 2026-05-22 | WFD540 | LIREN |
| 2014-10-15 | WFD540 | AUTHPR |
| 2014-10-15 | WFD540 | PNACT |
| 2014-10-11 | WFD540 | LIREN |
| 2006-12-20 | WFD540 | PNACT |
| 2006-12-16 | WFD540 | AUTHPR |
| 2006-12-15 | WFD540 | LIREN |
| 2005-01-04 | WFD540 | LIAUA |
| 2004-11-30 | WFD540 | ESCAPR |
| 2004-11-23 | WFD540 | LTSFRN |
| 2004-08-25 | WFD540 | PNACT |
| 2004-08-17 | WFD540 | AUTHPR |
| 2004-08-16 | WFD540 | LIMOD |
| 2003-01-29 | WFD540 | PNACT |
| 2003-01-22 | WFD540 | AUTHPR |
| 2003-01-21 | WFD540 | LIMOD |
| 2000-08-15 | WFD540 | AUTHPR |
| 2000-08-14 | WFD540 | COR |
| 1999-08-13 | WFD540 | LICCNV |
| 1999-07-26 | WFD540 | COR |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 976698 | 2026-07-29 23:40:06 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WFD540 | ULS 976698 | 2026-07-29 23:40:06 |
| Status | A | ULS 976698 | 2026-07-29 23:40:06 |
| Service | TI | ULS 976698 | 2026-07-29 23:40:06 |
| Grant Date | 1979-04-17 | ULS 976698 | 2026-07-29 23:40:06 |
| Expiration Date | 2029-12-01 | ULS 976698 | 2026-07-29 23:40:06 |