Universal Licensing System
WRDU440
EUREKA COMMUNITY SERVICES
License details
| ULS identifier | 4181918 |
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| Call sign | WRDU440 |
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| Radio service | IG |
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| Status | A |
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| Grant date | 2019-07-23 |
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| Expiration | 2029-07-23 |
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| Frequency range | 451.3625 - 456.3625 MHz (2 frequencies) |
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| Locations | 1 |
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| Representative location | EUREKA, HUMBOLDT, CA |
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| Coordinates | 40.8060000, -124.1607222 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:23:06 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | MO | 451.36250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 456.36250000 | | | 4.000000 | 4.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 451.36250000 | | 11K2F3E |
| 1 | 1 | 456.36250000 | | 11K2F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | EUREKA, HUMBOLDT, CA | 40.80600000, -124.16072222 | | | | |
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 |
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| 1 | 1011 WATERFRONT DR, EUREKA, CA | HUMBOLDT | 7074414244 |
License history
| Date | File or call sign | Action |
|---|
| 2019-07-23 | WRDU440 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4181918 | 2026-08-02 01:23:06 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRDU440 | ULS 4181918 | 2026-08-02 01:23:06 |
| Status | A | ULS 4181918 | 2026-08-02 01:23:06 |
| Service | IG | ULS 4181918 | 2026-08-02 01:23:06 |
| Grant Date | 2019-07-23 | ULS 4181918 | 2026-08-02 01:23:06 |
| Expiration Date | 2029-07-23 | ULS 4181918 | 2026-08-02 01:23:06 |