Universal Licensing System
WPER820
MICROSOFT CORPORATION
License details
| ULS identifier | 1783094 |
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| Call sign | WPER820 |
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| Radio service | IG |
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| Status | E |
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| Grant date | 2004-02-21 |
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| Expiration | 2014-04-14 |
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| Cancellation | 2014-06-14 |
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| Frequency range | 462.45 - 467.45 MHz (2 frequencies) |
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| Locations | 4 |
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| Representative location | REDMOND, KING, WA |
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| Coordinates | 47.6181667, -122.2012222 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-16 07:04:03 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB2 | 462.45000000 | | | 60.000000 | 100.000000 | |
| 2 | 1 | FB2 | 462.45000000 | | | 60.000000 | 100.000000 | |
| 4 | 1 | MO | 462.45000000 | | | 25.000000 | | |
| 3 | 1 | FX1 | 467.45000000 | | | 25.000000 | 5.000000 | |
| 4 | 1 | MO | 467.45000000 | | | 25.000000 | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 462.45000000 | | 20K0F3E |
| 2 | 1 | 462.45000000 | | 20K0F3E |
| 4 | 1 | 462.45000000 | | 20K0F3E |
| 3 | 1 | 467.45000000 | | 20K0F3E |
| 4 | 1 | 467.45000000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | BUILDING 20 ONE MICROSOFT WAY, REDMOND, KING, WA | 47.61816667, -122.20122222 | 69.000 m | B | 22.000 m structure / 22.000 m overall | N |
| 2 | T | BUILDING 41 ONE MICROSOFT WAY, REDMOND, KING, WA | 47.63788889, -122.13344444 | 112.000 m | B | 26.000 m structure / 26.000 m overall | N |
| 3 | T | WA | | | | | |
| 4 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 22.000 m | | | | 0.000 | |
| 1 | 2 | T | | 26.000 m | | | | 53.000 | |
| 1 | 3 | T | | | | | | | |
| 1 | 4 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 2 | One Microsoft Way, Redmond, WA | KING | 4258828080 |
License history
| Date | File or call sign | Action |
|---|
| 2014-06-14 | WPER820 | LIEXP |
| 2014-01-20 | WPER820 | LETRES |
| 2004-06-23 | WPER820 | LIAUA |
| 2004-06-22 | WPER820 | ESCAPR |
| 2004-01-20 | WPER820 | LETRES |
| 2002-07-09 | WPER820 | AUDOPR |
| 2000-11-23 | WPER820 | LICCNV |
| 2000-01-05 | WPER820 | LIMOD |
| 2000-01-05 | WPER820 | AUTHPR |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1783094 | 2026-08-16 07:04:03 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPER820 | ULS 1783094 | 2026-08-16 07:04:03 |
| Status | E | ULS 1783094 | 2026-08-16 07:04:03 |
| Service | IG | ULS 1783094 | 2026-08-16 07:04:03 |
| Grant Date | 2004-02-21 | ULS 1783094 | 2026-08-16 07:04:03 |
| Expiration Date | 2014-04-14 | ULS 1783094 | 2026-08-16 07:04:03 |
| Cancellation Date | 2014-06-14 | ULS 1783094 | 2026-08-16 07:04:03 |