Universal Licensing System
KNNS501
GRAYCOR INDUSTRIAL CONSTRUCTORS INC
License details
| ULS identifier | 1855479 |
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| Call sign | KNNS501 |
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| Radio service | IG |
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| Status | E |
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| Grant date | 1996-04-18 |
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| Expiration | 2001-04-18 |
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| Cancellation | 2001-06-24 |
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| Frequency range | 452.025 - 457.025 MHz (2 frequencies) |
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| Locations | 2 |
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| Representative location | EAST CHICAGO, LAKE, IN |
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| Coordinates | 41.6544722, -87.4475278 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:27:19 |
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Licensee
| Name | GRAYCOR INDUSTRIAL CONSTRUCTORS INC |
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| Applicant type | C |
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| Location | HOMEWOOD, IL |
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| Address | 1 GRAYCOR DR, HOMEWOOD, IL, 60430 |
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| Phone | 3122216262 |
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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 | FB2 | 452.02500000 | | | 45.000000 | 90.000000 | |
| 2 | 1 | MO | 452.02500000 | | | 20.000000 | | |
| 2 | 1 | MO | 457.02500000 | | | 20.000000 | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 452.02500000 | | 20K0F3E |
| 2 | 1 | 452.02500000 | | 20K0F3E |
| 2 | 1 | 457.02500000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
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| 1 | T | 3210 WATLING ST, EAST CHICAGO, LAKE, IN | 41.65447222, -87.44752778 | 181.000 m | B | 7.000 m structure / 13.000 m overall | N |
| 2 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
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| 1 | 1 | T | | 13.000 m | | | | 16.000 | |
| 1 | 2 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
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| 1 | 3210 WATLING ST, EAST CHICAGO, IN | | 3122216262 |
License history
| Date | File or call sign | Action |
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| 2001-09-13 | KNNS501 | LETAUS |
| 2001-06-24 | KNNS501 | LIEXP |
| 2001-01-25 | KNNS501 | LETRES |
| 2000-11-24 | KNNS501 | LICCNV |
| 1997-01-16 | KNNS501 | AUTHPR |
| 1996-04-18 | KNNS501 | LIAUA |
Sources and provenance
| Source | Source record | Retrieved | Match |
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| ULS | 1855479 | 2026-08-02 01:27:19 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | KNNS501 | ULS 1855479 | 2026-08-02 01:27:19 |
| Status | E | ULS 1855479 | 2026-08-02 01:27:19 |
| Service | IG | ULS 1855479 | 2026-08-02 01:27:19 |
| Grant Date | 1996-04-18 | ULS 1855479 | 2026-08-02 01:27:19 |
| Expiration Date | 2001-04-18 | ULS 1855479 | 2026-08-02 01:27:19 |
| Cancellation Date | 2001-06-24 | ULS 1855479 | 2026-08-02 01:27:19 |