Universal Licensing System
WRTP257
REGIONAL EMERGENCY DISPATCH CENTER
License details
| ULS identifier | 4633126 |
|---|
| Call sign | WRTP257 |
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| Radio service | PW |
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| Status | A |
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| Grant date | 2022-07-11 |
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| Expiration | 2032-07-11 |
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| Frequency range | 156.135 - 159.66 MHz (2 frequencies) |
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| Locations | 4 |
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| Representative location | PARK RIDGE, COOK, IL |
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| Coordinates | 41.9961667, -87.8370278 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:25:08 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB2 | 156.13500000 | | | 100.000000 | 80.000000 | |
| 2 | 1 | FB2 | 156.13500000 | | | 100.000000 | 75.000000 | |
| 3 | 1 | FB2 | 156.13500000 | | | 50.000000 | 45.000000 | |
| 4 | 1 | FB2 | 156.13500000 | | | 100.000000 | 85.000000 | |
| 1 | 1 | FB2 | 159.66000000 | | | 100.000000 | 80.000000 | |
| 2 | 1 | FB2 | 159.66000000 | | | 100.000000 | 80.000000 | |
| 3 | 1 | FB2 | 159.66000000 | | | 100.000000 | 75.000000 | |
| 4 | 1 | FB2 | 159.66000000 | | | 100.000000 | 85.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 156.13500000 | | 8K70D7W |
| 1 | 1 | 156.13500000 | | 8K70D1W |
| 2 | 1 | 156.13500000 | | 8K70D7W |
| 2 | 1 | 156.13500000 | | 8K70D1W |
| 3 | 1 | 156.13500000 | | 8K70D7W |
| 3 | 1 | 156.13500000 | | 8K70D1W |
| 4 | 1 | 156.13500000 | | 8K70D7W |
| 4 | 1 | 156.13500000 | | 8K70D1W |
| 1 | 1 | 159.66000000 | | 8K70D1W |
| 1 | 1 | 159.66000000 | | 8K70D7W |
| 2 | 1 | 159.66000000 | | 8K70D7W |
| 2 | 1 | 159.66000000 | | 8K70D1W |
| 3 | 1 | 159.66000000 | | 8K70D7W |
| 3 | 1 | 159.66000000 | | 8K70D1W |
| 4 | 1 | 159.66000000 | | 8K70D1W |
| 4 | 1 | 159.66000000 | | 8K70D7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 901 W DEVON AVE, PARK RIDGE, COOK, IL | 41.99616667, -87.83702778 | 194.000 m | BTWR | 6.100 m structure / 19.800 m overall | N |
| 2 | T | 6611 W JARVIS AVE, NILES, COOK, IL | 42.01447222, -87.79208333 | 203.000 m | BMAST | 22.300 m structure / 34.400 m overall | N |
| 3 | T | 7000 N. CENTRAL PARK, LINCOLNWOOD, COOK, IL | 42.00922222, -87.71841667 | 181.000 m | TANK | 38.100 m structure / 42.700 m overall | N |
| 4 | T | 1420 MINER ST, DES PLAINES, COOK, IL | 42.04227778, -87.88825000 | 195.000 m | BPOLE | 28.700 m structure / 38.400 m overall | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 19.800 m | | | | 18.800 | |
| 1 | 2 | T | | 18.300 m | | | | 30.200 | |
| 1 | 3 | T | | 42.700 m | | | | 38.700 | |
| 1 | 4 | T | | 38.400 m | | | | 31.900 | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 1842 SHERMER RD, NORTHBROOK, IL | COOK | 8477245700 |
License history
| Date | File or call sign | Action |
|---|
| 2023-05-23 | WRTP257 | LETCNS |
| 2023-04-11 | WRTP257 | LETCNS |
| 2022-08-24 | WRTP257 | LIMOD |
| 2022-07-11 | WRTP257 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4633126 | 2026-08-02 01:25:08 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRTP257 | ULS 4633126 | 2026-08-02 01:25:08 |
| Status | A | ULS 4633126 | 2026-08-02 01:25:08 |
| Service | PW | ULS 4633126 | 2026-08-02 01:25:08 |
| Grant Date | 2022-07-11 | ULS 4633126 | 2026-08-02 01:25:08 |
| Expiration Date | 2032-07-11 | ULS 4633126 | 2026-08-02 01:25:08 |