Universal Licensing System
WRDS551
Sierra Construction Company, Inc.
License details
| ULS identifier | 4178341 |
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| Call sign | WRDS551 |
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| Radio service | IG |
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| Status | A |
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| Grant date | 2019-07-10 |
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| Expiration | 2029-07-10 |
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| Frequency range | 451.7125 - 457.7875 MHz (5 frequencies) |
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| Locations | 1 |
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| Representative location | Everett, SNOHOMISH, WA |
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| Coordinates | 47.9720000, -122.3249167 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:22:54 |
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Licensee
| Name | Sierra Construction Company, Inc. |
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| Applicant type | C |
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| FRN | 0028463057 |
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| Location | Woodinville, WA |
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| Address | 19900 144th Ave NE, Woodinville, WA, 98072 |
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| Phone | 4254875200 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | MO | 451.71250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 452.78750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 452.81250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 456.71250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 457.78750000 | | | 4.000000 | 4.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 451.71250000 | | 7K60F1W |
| 1 | 1 | 452.78750000 | | 7K60F1W |
| 1 | 1 | 452.81250000 | | 7K60F1W |
| 1 | 1 | 456.71250000 | | 7K60F1W |
| 1 | 1 | 457.78750000 | | 7K60F1W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | Everett, SNOHOMISH, WA | 47.97200000, -122.32491667 | | | | |
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 | 19900 144th Ave NE, Woodinville, WA | KING | 4254875200 |
License history
| Date | File or call sign | Action |
|---|
| 2019-07-10 | WRDS551 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4178341 | 2026-08-02 01:22:54 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRDS551 | ULS 4178341 | 2026-08-02 01:22:54 |
| Status | A | ULS 4178341 | 2026-08-02 01:22:54 |
| Service | IG | ULS 4178341 | 2026-08-02 01:22:54 |
| Grant Date | 2019-07-10 | ULS 4178341 | 2026-08-02 01:22:54 |
| Expiration Date | 2029-07-10 | ULS 4178341 | 2026-08-02 01:22:54 |