Universal Licensing System
WRDN840
Open Air Wireless
License details
| ULS identifier | 4170501 |
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| Call sign | WRDN840 |
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| Radio service | MG |
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| Status | A |
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| Grant date | 2019-06-14 |
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| Expiration | 2029-06-14 |
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| Frequency range | 6019.325 MHz |
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| Locations | 2 |
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| Representative location | Spring Grove, MCHENRY, IL |
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| Coordinates | 42.4683889, -88.2160278 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:44:35 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FXO | 6019.32500000 | | | | | |
| 1 | 1 | FXO | 6019.32500000 | | | | | |
| 1 | 1 | FXO | 6019.32500000 | | | | | |
| 1 | 1 | FXO | 6019.32500000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 6019.32500000 | | 56M0D7W |
| 1 | 1 | 6019.32500000 | | 56M0D7W |
| 1 | 1 | 6019.32500000 | | 56M0D7W |
| 1 | 1 | 6019.32500000 | | 56M0D7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 909 English Prairie Rd, Spring Grove, MCHENRY, IL | 42.46838889, -88.21602778 | 265.000 m | LTOWER | 18.300 m structure / 19.800 m overall | |
| 2 | R | | 42.31772222, -88.14833333 | 239.300 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | RADIO WAVES INC. HP3-6 | | S | 33.3000 | 161.6000 | | |
| 1 | 2 | R | RADIO WAVES INC. HP3-6 | | | 33.3000 | | | |
License history
| Date | File or call sign | Action |
|---|
| 2021-02-01 | WRDN840 | FRATRE |
| 2021-01-21 | WRDN840 | PNLISR |
| 2021-01-21 | WRDN840 | LETTRS |
| 2020-09-15 | WRDN840 | LETCNS |
| 2019-06-14 | WRDN840 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4170501 | 2026-08-02 02:44:35 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRDN840 | ULS 4170501 | 2026-08-02 02:44:35 |
| Status | A | ULS 4170501 | 2026-08-02 02:44:35 |
| Service | MG | ULS 4170501 | 2026-08-02 02:44:35 |
| Grant Date | 2019-06-14 | ULS 4170501 | 2026-08-02 02:44:35 |
| Expiration Date | 2029-06-14 | ULS 4170501 | 2026-08-02 02:44:35 |