Universal Licensing System
WPIU975
Tri-State Generation And Transmission Association, Inc.
License details
| ULS identifier | 1896621 |
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| Call sign | WPIU975 |
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| Radio service | IG |
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| Status | A |
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| Grant date | 2025-08-05 |
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| Expiration | 2035-11-01 |
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| Frequency range | 452.35 - 457.35 MHz (2 frequencies) |
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| Locations | 2 |
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| Representative location | SILVERTON, SAN JUAN, CO |
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| Coordinates | 37.8050000, -107.6700556 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:13:36 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FXO | 452.35000000 | | | 75.000000 | 473.000000 | |
| 2 | 1 | FXO | 457.35000000 | | | 75.000000 | 473.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 452.35000000 | | 11K2F1D |
| 2 | 1 | 457.35000000 | | 11K2F1D |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 3 BLKS SE AT INT OF US 550 AND GREEN ST, SILVERTON, SAN JUAN, CO | 37.80500000, -107.67005556 | 2821.000 m | POLE | 9.000 m structure / 15.000 m overall | N |
| 2 | T | BURRO BRIDGE SUBSTATION 8 KM NW, SILVERTON, SAN JUAN, CO | 37.84666667, -107.72616667 | 3060.000 m | POLE | 9.000 m structure / 15.000 m overall | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 15.000 m | | | | -673.000 | |
| 1 | 2 | T | | 15.000 m | | | | -384.000 | |
Control points
| Number | Address | County | Phone |
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| 1 | Westminster Operations Center, 1100 W. 116th Avenue, Westminster, CO | ADAMS | 3034526111 |
License history
| Date | File or call sign | Action |
|---|
| 2025-08-05 | WPIU975 | LIREN |
| 2015-10-02 | WPIU975 | LIREN |
| 2015-10-01 | WPIU975 | ESUAPR |
| 2015-08-10 | WPIU975 | LETRES |
| 2013-02-12 | WPIU975 | LIMOD |
| 2012-10-12 | WPIU975 | ESCAPR |
| 2012-10-11 | WPIU975 | ESUAPR |
| 2012-10-11 | WPIU975 | EFUAPR |
| 2005-08-19 | WPIU975 | LIREN |
| 2005-08-18 | WPIU975 | ESUAPR |
| 2005-08-08 | WPIU975 | LETRES |
| 2002-02-11 | WPIU975 | AUDOPR |
| 2002-01-17 | WPIU975 | LIAUA |
| 2000-11-24 | WPIU975 | LICCNV |
| 2000-10-05 | WPIU975 | AUTHPR |
| 2000-10-05 | WPIU975 | LIREN |
| 2000-07-28 | WPIU975 | LETRES |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1896621 | 2026-08-02 01:13:36 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPIU975 | ULS 1896621 | 2026-08-02 01:13:36 |
| Status | A | ULS 1896621 | 2026-08-02 01:13:36 |
| Service | IG | ULS 1896621 | 2026-08-02 01:13:36 |
| Grant Date | 2025-08-05 | ULS 1896621 | 2026-08-02 01:13:36 |
| Expiration Date | 2035-11-01 | ULS 1896621 | 2026-08-02 01:13:36 |