Universal Licensing System
WQML427
Cook County Sheriff's Police
License details
| ULS identifier | 3227500 |
|---|
| Call sign | WQML427 |
|---|
| Radio service | PA |
|---|
| Status | A |
|---|
| Grant date | 2020-06-24 |
|---|
| Expiration | 2030-09-13 |
|---|
| Frequency range | 4942.5 - 4977.5 MHz (5 frequencies) |
|---|
| Locations | 4 |
|---|
| Representative location | Des Plaines, COOK, IL |
|---|
| Coordinates | 42.0436944, -87.8729444 |
|---|
| Source archive | l_LMpriv.zip |
|---|
| Dataset refreshed | 2026-08-02 01:13:59 |
|---|
Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FXO | 4942.50000000 | | | 0.200000 | 31.600000 | |
| 2 | 1 | FXO | 4942.50000000 | | | 0.200000 | 31.600000 | |
| 1 | 1 | FXO | 4947.50000000 | | | 0.200000 | 31.600000 | |
| 2 | 1 | FXO | 4947.50000000 | | | 0.200000 | 31.600000 | |
| 3 | 1 | FXO | 4962.50000000 | | | 0.200000 | 31.600000 | |
| 4 | 1 | FXO | 4962.50000000 | | | 0.200000 | 31.600000 | |
| 1 | 1 | FXO | 4967.50000000 | | | 0.200000 | 31.600000 | |
| 2 | 1 | FXO | 4967.50000000 | | | 0.200000 | 31.600000 | |
| 3 | 1 | FXO | 4967.50000000 | | | 0.200000 | 31.600000 | |
| 4 | 1 | FXO | 4967.50000000 | | | 0.200000 | 31.600000 | |
| 3 | 1 | FXO | 4977.50000000 | | | 0.200000 | 31.600000 | |
| 4 | 1 | FXO | 4977.50000000 | | | 0.200000 | 31.600000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 4942.50000000 | | 5M00W7W |
| 2 | 1 | 4942.50000000 | | 5M00W7W |
| 1 | 1 | 4947.50000000 | | 5M00W7W |
| 2 | 1 | 4947.50000000 | | 5M00W7W |
| 3 | 1 | 4962.50000000 | | 5M00W7W |
| 4 | 1 | 4962.50000000 | | 5M00W7W |
| 1 | 1 | 4967.50000000 | | 5M00W7W |
| 2 | 1 | 4967.50000000 | | 5M00W7W |
| 3 | 1 | 4967.50000000 | | 5M00W7W |
| 4 | 1 | 4967.50000000 | | 5M00W7W |
| 3 | 1 | 4977.50000000 | | 5M00W7W |
| 4 | 1 | 4977.50000000 | | 5M00W7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 2101 Ballard Road - Des Plaines Hwy., Des Plaines, COOK, IL | 42.04369444, -87.87294444 | 191.100 m | TOWER | 54.500 m structure / 60.900 m overall | |
| 2 | T | 1775 Dempster Rd. - Lutheran General Hospital, Des Plaines, COOK, IL | 42.03891667, -87.84755556 | 191.000 m | BANT | 42.000 m structure / 44.000 m overall | |
| 3 | T | 2650 S California Ave. - Criminal courts, Chicago, COOK, IL | 41.84302778, -87.69608333 | 182.000 m | B | 61.000 m structure / 61.000 m overall | |
| 4 | T | 3930 N Clark St. - CHA Clark and Irving, Chicago, COOK, IL | 41.95350000, -87.66244444 | 181.000 m | B | 58.000 m structure / 59.000 m overall | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 45.400 m | S | 22.0000 | 105.6000 | | |
| 1 | 2 | T | | 42.000 m | S | 22.0000 | 285.6000 | | |
| 1 | 3 | T | | 61.000 m | S | 22.0000 | 12.8000 | | |
| 1 | 4 | T | | 57.500 m | S | 22.0000 | 192.8000 | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 1401 Maybrook Drive, Maywood, IL | COOK | 7088654808 |
Special conditions
| Type | Condition code |
|---|
| P | 1038 |
| P | 3055 |
License history
| Date | File or call sign | Action |
|---|
| 2021-04-20 | WQML427 | LIAUA |
| 2020-06-24 | WQML427 | LIREN |
| 2020-06-22 | WQML427 | LETRES |
| 2020-06-15 | WQML427 | ESURNW |
| 2012-04-17 | WQML427 | LETCNS |
| 2011-01-14 | WQML427 | LIMOD |
| 2011-01-06 | WQML427 | ESUAPR |
| 2010-09-13 | WQML427 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 3227500 | 2026-08-02 01:13:59 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WQML427 | ULS 3227500 | 2026-08-02 01:13:59 |
| Status | A | ULS 3227500 | 2026-08-02 01:13:59 |
| Service | PA | ULS 3227500 | 2026-08-02 01:13:59 |
| Grant Date | 2020-06-24 | ULS 3227500 | 2026-08-02 01:13:59 |
| Expiration Date | 2030-09-13 | ULS 3227500 | 2026-08-02 01:13:59 |