Universal Licensing System
WPRK920
CLEAN AIR ENGINEERING
License details
| ULS identifier | 1832449 |
|---|
| Call sign | WPRK920 |
|---|
| Radio service | IG |
|---|
| Status | A |
|---|
| Grant date | 2025-08-13 |
|---|
| Expiration | 2035-11-06 |
|---|
| Frequency range | 464.5 - 469.55 MHz (4 frequencies) |
|---|
| Locations | 1 |
|---|
| Representative location | US |
|---|
| Source archive | l_LMpriv.zip |
|---|
| Dataset refreshed | 2026-08-02 01:14:30 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | MOI | 464.50000000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MOI | 464.55000000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MOI | 469.50000000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MOI | 469.55000000 | | | 4.000000 | 4.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 464.50000000 | | 11K2F3E |
| 1 | 1 | 464.50000000 | | 7K60FXE |
| 1 | 1 | 464.55000000 | | 7K60FXE |
| 1 | 1 | 464.55000000 | | 11K2F3E |
| 1 | 1 | 469.50000000 | | 7K60FXE |
| 1 | 1 | 469.50000000 | | 11K2F3E |
| 1 | 1 | 469.55000000 | | 7K60FXE |
| 1 | 1 | 469.55000000 | | 11K2F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | US | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 500 W WOOD ST, PALATINE, IL | COOK | 8479913300 |
License history
| Date | File or call sign | Action |
|---|
| 2025-08-13 | WPRK920 | LIREN |
| 2025-08-11 | WPRK920 | LETRES |
| 2023-03-31 | WPRK920 | LIMOD |
| 2015-08-24 | WPRK920 | LIREN |
| 2015-08-19 | WPRK920 | ESUAPR |
| 2015-08-19 | WPRK920 | LIAUA |
| 2015-08-19 | WPRK920 | LIMOD |
| 2015-08-18 | WPRK920 | ESUAPR |
| 2015-08-10 | WPRK920 | LETRES |
| 2012-02-01 | WPRK920 | LIMOD |
| 2011-11-30 | WPRK920 | ESCAPR |
| 2005-08-18 | WPRK920 | LIREN |
| 2005-08-18 | WPRK920 | LTSFRN |
| 2005-08-17 | WPRK920 | ESCAPR |
| 2005-08-15 | WPRK920 | LETRES |
| 2000-11-23 | WPRK920 | LICCNV |
| 2000-11-06 | WPRK920 | LIISS |
| 2000-11-06 | WPRK920 | AUTHPR |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1832449 | 2026-08-02 01:14:30 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPRK920 | ULS 1832449 | 2026-08-02 01:14:30 |
| Status | A | ULS 1832449 | 2026-08-02 01:14:30 |
| Service | IG | ULS 1832449 | 2026-08-02 01:14:30 |
| Grant Date | 2025-08-13 | ULS 1832449 | 2026-08-02 01:14:30 |
| Expiration Date | 2035-11-06 | ULS 1832449 | 2026-08-02 01:14:30 |