Universal Licensing System
WPPH537
ELECTRO SCIENTIFIC INDUSTRIES INC
License details
| ULS identifier | 1818240 |
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| Call sign | WPPH537 |
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| Radio service | IG |
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| Status | E |
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| Grant date | 2014-10-07 |
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| Expiration | 2024-12-30 |
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| Cancellation | 2025-03-01 |
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| Frequency range | 452.35 - 457.35 MHz (2 frequencies) |
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| Locations | 3 |
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| Representative location | PORTLAND, WASHINGTON, OR |
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| Coordinates | 45.5259444, -122.8212222 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:14:37 |
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Licensee
| Name | ELECTRO SCIENTIFIC INDUSTRIES INC |
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| Applicant type | C |
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| FRN | 0004524930 |
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| Location | PORTLAND, OR |
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| Address | 13900 NW SCIENCE PARK DR, PORTLAND, OR, 97229 |
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| Phone | 5036715448 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB2 | 452.35000000 | | | 20.000000 | 50.000000 | |
| 3 | 1 | MO | 452.35000000 | | | 20.000000 | 20.000000 | |
| 2 | 1 | FX1 | 457.35000000 | | | 20.000000 | 20.000000 | |
| 3 | 1 | MO | 457.35000000 | | | 20.000000 | 20.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 452.35000000 | | 11K2F3E |
| 1 | 1 | 452.35000000 | | 7K60F1W |
| 1 | 1 | 452.35000000 | | 7K60F7W |
| 3 | 1 | 452.35000000 | | 11K2F3E |
| 3 | 1 | 452.35000000 | | 7K60F7W |
| 3 | 1 | 452.35000000 | | 7K60F1W |
| 2 | 1 | 457.35000000 | | 7K60F1W |
| 2 | 1 | 457.35000000 | | 7K60F7W |
| 2 | 1 | 457.35000000 | | 11K2F3E |
| 3 | 1 | 457.35000000 | | 7K60F1W |
| 3 | 1 | 457.35000000 | | 11K2F3E |
| 3 | 1 | 457.35000000 | | 7K60F7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 13900 NW SCIENCE PARK DR, PORTLAND, WASHINGTON, OR | 45.52594444, -122.82122222 | 78.000 m | BANT | 7.000 m structure / 9.000 m overall | N |
| 2 | T | OR | | | | | |
| 3 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 9.000 m | | | | -1.500 | |
| 1 | 2 | T | | | | | | | |
| 1 | 3 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 13900 NW SCIENCE PARK DR, PORTLAND, OR | WASHINGTON | 5418502503 |
License history
| Date | File or call sign | Action |
|---|
| 2025-03-01 | WPPH537 | LIEXP |
| 2024-10-07 | WPPH537 | LETRES |
| 2018-08-02 | WPPH537 | LIMOD |
| 2014-10-07 | WPPH537 | LIREN |
| 2014-10-06 | WPPH537 | LTSAPR |
| 2004-10-27 | WPPH537 | LIREN |
| 2004-10-20 | WPPH537 | LTSAPR |
| 2004-10-04 | WPPH537 | LETRES |
| 2001-10-17 | WPPH537 | LIMOD |
| 2001-09-24 | WPPH537 | AUDOPR |
| 2001-08-01 | WPPH537 | LIAUA |
| 2001-07-03 | WPPH537 | LIAUA |
| 2001-06-04 | WPPH537 | LIMOD |
| 2000-11-23 | WPPH537 | LICCNV |
| 1999-12-30 | WPPH537 | LIISS |
| 1999-12-30 | WPPH537 | AUTHPR |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1818240 | 2026-08-02 01:14:37 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPPH537 | ULS 1818240 | 2026-08-02 01:14:37 |
| Status | E | ULS 1818240 | 2026-08-02 01:14:37 |
| Service | IG | ULS 1818240 | 2026-08-02 01:14:37 |
| Grant Date | 2014-10-07 | ULS 1818240 | 2026-08-02 01:14:37 |
| Expiration Date | 2024-12-30 | ULS 1818240 | 2026-08-02 01:14:37 |
| Cancellation Date | 2025-03-01 | ULS 1818240 | 2026-08-02 01:14:37 |