Universal Licensing System
WHC257
NorthWestern Corporation
License details
| ULS identifier | 980146 |
|---|
| Call sign | WHC257 |
|---|
| Radio service | MG |
|---|
| Status | A |
|---|
| Grant date | 2022-03-10 |
|---|
| Expiration | 2032-03-26 |
|---|
| Frequency range | 11565 MHz |
|---|
| Locations | 2 |
|---|
| Representative location | COLSTRIP, ROSEBUD, MT |
|---|
| Coordinates | 45.8910833, -106.6133333 |
|---|
| Source archive | l_micro.zip |
|---|
| Dataset refreshed | 2026-08-17 04:19:03 |
|---|
Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 2 | FXO | 5955.08000000 | | | | | |
| 1 | 7 | FXO | 5974.85000000 | | | | | |
| 1 | 7 | FXO | 5974.85000000 | | | | | |
| 1 | 7 | FXO | 5974.85000000 | | | | | |
| 1 | 7 | FXO | 5974.85000000 | | | | | |
| 1 | 7 | FXO | 5974.85000000 | | | | | |
| 1 | 7 | FXO | 5974.85000000 | | | | | |
| 1 | 7 | FXO | 5974.85000000 | | | | | |
| 1 | 7 | FXO | 5974.85000000 | | | | | |
| 1 | 7 | FXO | 5974.85000000 | | | | | |
| 1 | 7 | FXO | 5974.85000000 | | | | | |
| 1 | 8 | FXO | 11565.00000000 | | | | | |
| 1 | 8 | FXO | 11565.00000000 | | | | | |
| 1 | 8 | FXO | 11565.00000000 | | | | | |
| 1 | 8 | FXO | 11565.00000000 | | | | | |
| 1 | 8 | FXO | 11565.00000000 | | | | | |
| 1 | 8 | FXO | 11565.00000000 | | | | | |
| 1 | 8 | FXO | 11565.00000000 | | | | | |
| 1 | 8 | FXO | 11565.00000000 | | | | | |
| 1 | 8 | FXO | 11565.00000000 | | | | | |
| 1 | 8 | FXO | 11565.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 2 | 5955.08000000 | | 10M0D7W |
| 1 | 7 | 5974.85000000 | | 30M0D7W |
| 1 | 7 | 5974.85000000 | | 30M0D7W |
| 1 | 7 | 5974.85000000 | | 30M0D7W |
| 1 | 7 | 5974.85000000 | | 30M0D7W |
| 1 | 7 | 5974.85000000 | | 30M0D7W |
| 1 | 7 | 5974.85000000 | | 30M0D7W |
| 1 | 7 | 5974.85000000 | | 30M0D7W |
| 1 | 7 | 5974.85000000 | | 30M0D7W |
| 1 | 7 | 5974.85000000 | | 30M0D7W |
| 1 | 7 | 5974.85000000 | | 30M0G7W |
| 1 | 8 | 11565.00000000 | | 30M0D7W |
| 1 | 8 | 11565.00000000 | | 30M0D7W |
| 1 | 8 | 11565.00000000 | | 30M0D7W |
| 1 | 8 | 11565.00000000 | | 30M0D7W |
| 1 | 8 | 11565.00000000 | | 30M0D7W |
| 1 | 8 | 11565.00000000 | | 30M0D7W |
| 1 | 8 | 11565.00000000 | | 30M0D7W |
| 1 | 8 | 11565.00000000 | | 30M0D7W |
| 1 | 8 | 11565.00000000 | | 30M0D7W |
| 1 | 8 | 11565.00000000 | | 30M0G7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | MONTANA POWER ELECTRIC SUBSTATION, COLSTRIP, ROSEBUD, MT | 45.89108333, -106.61333333 | 996.100 m | LTOWER | 45.700 m structure / 45.700 m overall | N |
| 2 | R | | 45.83719444, -106.90447222 | 1456.900 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 2 | 1 | T | ANDREW CORPORATION PAR6-59A | | V | 38.2000 | 255.3000 | | |
| 2 | 2 | R | ANDREW CORPORATION PAR6-59A | | | 38.2000 | | | |
| 7 | 1 | T | ANDREW PAR6-59A | | V | 38.2000 | 255.3000 | | |
| 7 | 2 | R | ANDREW PAR6-59A | | | 38.2000 | 0.0000 | | |
| 8 | 1 | T | ANDREW VHLP4-11WA | | V | 40.7000 | 255.3000 | | |
| 8 | 2 | R | ANDREW VHLP4-11WA | | | 40.7000 | 0.0000 | | |
License history
| Date | File or call sign | Action |
|---|
| 2026-08-03 | WHC257 | LIMOD |
| 2026-07-20 | WHC257 | LIMOD |
| 2026-06-24 | WHC257 | LETTRS |
| 2026-06-24 | WHC257 | PNLISR |
| 2026-02-18 | WHC257 | LETCNS |
| 2024-12-08 | WHC257 | FRATRM |
| 2024-12-08 | WHC257 | ANATRM |
| 2024-12-08 | WHC257 | PAATRM |
| 2024-11-20 | WHC257 | LIMOD |
| 2024-09-04 | WHC257 | PNLISR |
| 2024-09-04 | WHC257 | LETTRS |
| 2024-04-30 | WHC257 | LETCNS |
| 2024-01-01 | WHC257 | LITRAN |
| 2023-02-01 | WHC257 | LIMOD |
| 2022-03-10 | WHC257 | LIREN |
| 2022-01-03 | WHC257 | LETRES |
| 2020-10-30 | WHC257 | LIAUA |
| 2016-05-16 | WHC257 | LTSAPR |
| 2016-05-14 | WHC257 | LIAUA |
| 2012-01-31 | WHC257 | LIREN |
| 2012-01-02 | WHC257 | LETRES |
| 2007-07-31 | WHC257 | ESCAPR |
| 2006-05-08 | WHC257 | LTSAPR |
| 2006-05-06 | WHC257 | LIAUA |
| 2005-09-28 | WHC257 | LTSAPR |
| 2005-09-28 | WHC257 | LIAUA |
| 2005-04-07 | WHC257 | LIASS |
| 2005-03-16 | WHC257 | LTSAPR |
| 2004-05-27 | WHC257 | LIMOD |
| 2003-09-14 | WHC257 | LIASS |
| 2003-07-30 | WHC257 | LIMOD |
| 2002-11-15 | WHC257 | LIASS |
| 2002-05-03 | WHC257 | LIREN |
| 2002-03-14 | WHC257 | LIAUA |
| 2002-02-15 | WHC257 | LITRAN |
| 2001-12-31 | WHC257 | LETRES |
| 1999-08-13 | WHC257 | LICCNV |
| 1997-01-22 | WHC257 | LIREN |
| 1992-03-26 | WHC257 | LIMOD |
| 1992-02-11 | WHC257 | LIMOD |
| 1987-04-24 | WHC257 | LIMOD |
| 1982-04-13 | WHC257 | LIMOD |
| 1982-02-19 | WHC257 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 980146 | 2026-08-17 04:19:03 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WHC257 | ULS 980146 | 2026-08-17 04:19:03 |
| Status | A | ULS 980146 | 2026-08-17 04:19:03 |
| Service | MG | ULS 980146 | 2026-08-17 04:19:03 |
| Grant Date | 2022-03-10 | ULS 980146 | 2026-08-17 04:19:03 |
| Expiration Date | 2032-03-26 | ULS 980146 | 2026-08-17 04:19:03 |