Universal Licensing System
KSU421
ILLINOIS, STATE OF
License details
| ULS identifier | 1257718 |
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| Call sign | KSU421 |
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| Radio service | PW |
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| Status | C |
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| Grant date | 2005-05-21 |
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| Expiration | 2015-08-16 |
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| Cancellation | 2009-10-14 |
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| Frequency range | 42.5 - 42.6 MHz (2 frequencies) |
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| Locations | 1 |
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| Representative location | PEOTONE, WILL, IL |
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| Coordinates | 41.3600278, -87.8042222 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-16 06:47:43 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB | 39.46000000 | | | 60.000000 | 48.000000 | |
| 1 | 1 | FB | 42.50000000 | | | 100.000000 | 87.000000 | |
| 1 | 1 | FB | 42.60000000 | | | 100.000000 | 87.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 39.46000000 | | 20K0F3E |
| 1 | 1 | 42.50000000 | | 20K0F3E |
| 1 | 1 | 42.60000000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | RT I 57 2.8 MI N, PEOTONE, WILL, IL | 41.36002778, -87.80422222 | 221.000 m | | | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 11.000 m | | | | | |
Control points
| Number | Address | County | Phone |
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| 1 | RT I-57 2.8 MI N PEOTONE INTERCHANGE, PEOTONE, IL | | 3122589350 |
License history
| Date | File or call sign | Action |
|---|
| 2009-10-15 | KSU421 | LICAN |
| 2009-02-25 | KSU421 | LIAUA |
| 2009-02-24 | KSU421 | ESCAPR |
| 2005-05-21 | KSU421 | LIREN |
| 2002-04-30 | KSU421 | AUDOPR |
| 2000-10-20 | KSU421 | LICCNV |
| 2000-05-26 | KSU421 | AUTHPR |
| 2000-05-26 | KSU421 | LIREN |
| 2000-05-17 | KSU421 | LETRES |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1257718 | 2026-08-16 06:47:43 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | KSU421 | ULS 1257718 | 2026-08-16 06:47:43 |
| Status | C | ULS 1257718 | 2026-08-16 06:47:43 |
| Service | PW | ULS 1257718 | 2026-08-16 06:47:43 |
| Grant Date | 2005-05-21 | ULS 1257718 | 2026-08-16 06:47:43 |
| Expiration Date | 2015-08-16 | ULS 1257718 | 2026-08-16 06:47:43 |
| Cancellation Date | 2009-10-14 | ULS 1257718 | 2026-08-16 06:47:43 |