Universal Licensing System
KOP256
SILKE COMMUNICATIONS, INC.
License details
| ULS identifier | 5494 |
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| Call sign | KOP256 |
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| Radio service | CD |
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| Status | A |
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| Grant date | 2019-05-07 |
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| Expiration | 2029-04-01 |
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| Frequency range | 454.025 - 454.225 MHz (4 frequencies) |
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| Locations | 1 |
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| Representative location | PORTLAND, MULTNOMAH, OR |
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| Coordinates | 45.5223333, -122.7473056 |
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| Source archive | l_paging.zip |
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| Dataset refreshed | 2026-08-02 02:52:19 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FBBS | 454.02500000 | | | | 264.400000 | |
| 1 | 1 | FBBS | 454.12500000 | | | | 264.400000 | |
| 1 | 1 | FBBS | 454.20000000 | | | | 264.400000 | |
| 1 | 1 | FBBS | 454.22500000 | | | | 264.400000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 454.02500000 | | 16K0F1D |
| 1 | 1 | 454.02500000 | | 15K0F2D |
| 1 | 1 | 454.02500000 | | 16K0F3E |
| 1 | 1 | 454.12500000 | | 15K0F2D |
| 1 | 1 | 454.12500000 | | 16K0F1D |
| 1 | 1 | 454.12500000 | | 16K0F3E |
| 1 | 1 | 454.20000000 | | 16K0F1D |
| 1 | 1 | 454.20000000 | | 15K0F2D |
| 1 | 1 | 454.20000000 | | 16K0F3E |
| 1 | 1 | 454.22500000 | | 16K0F3E |
| 1 | 1 | 454.22500000 | | 15K0F2D |
| 1 | 1 | 454.22500000 | | 16K0F1D |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | TOP OF WEST HILLS, PORTLAND, MULTNOMAH, OR | 45.52233333, -122.74730556 | 342.000 m | NNTANN | 282.000 m structure / 282.000 m overall | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
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| 1 | 1 | T | DECIBEL DB-413 | 107.000 m | V | | | | |
Control points
| Number | Address | County | Phone |
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| 2 | 3 CROW CANYON COURT, SAN RAMON, CA | CONTRA COSTA | 9255521820 |
License history
| Date | File or call sign | Action |
|---|
| 2021-06-16 | KOP256 | LIAUA |
| 2020-08-04 | KOP256 | LIMOD |
| 2019-05-07 | KOP256 | LIREN |
| 2019-02-11 | KOP256 | LETRES |
| 2017-10-18 | KOP256 | LIAUA |
| 2009-03-03 | KOP256 | LIREN |
| 2009-01-12 | KOP256 | ESUAPR |
| 2009-01-05 | KOP256 | LETRES |
| 2005-01-13 | KOP256 | LETAFU |
| 2004-10-06 | KOP256 | AUDOPR |
| 2004-09-28 | KOP256 | LETAUS |
| 2000-04-04 | KOP256 | AUTHPR |
| 2000-02-22 | KOP256 | LIASS |
| 1999-08-11 | KOP256 | COR |
| 1999-08-10 | KOP256 | COR |
| 1999-05-13 | KOP256 | AUTHPR |
| 1999-05-05 | KOP256 | AUTHPR |
| 1999-05-03 | KOP256 | LIREN |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 5494 | 2026-08-02 02:52:17 | Source Primary |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | KOP256 | ULS 5494 | 2026-08-02 02:52:19 |
| Status | A | ULS 5494 | 2026-08-02 02:52:19 |
| Service | CD | ULS 5494 | 2026-08-02 02:52:19 |
| Grant Date | 2019-05-07 | ULS 5494 | 2026-08-02 02:52:19 |
| Expiration Date | 2029-04-01 | ULS 5494 | 2026-08-02 02:52:19 |