Universal Licensing System
WQQU281
National Oilwell Varco
License details
| ULS identifier | 3452219 |
|---|
| Call sign | WQQU281 |
|---|
| Radio service | IG |
|---|
| Status | E |
|---|
| Grant date | 2013-03-04 |
|---|
| Expiration | 2023-03-04 |
|---|
| Cancellation | 2023-05-06 |
|---|
| Frequency range | 451.4 - 466.125 MHz (6 frequencies) |
|---|
| Locations | 1 |
|---|
| Source archive | l_LMpriv.zip |
|---|
| Dataset refreshed | 2026-08-02 01:21:10 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB2 | 451.40000000 | | | 25.000000 | 25.000000 | |
| 2 | 1 | MO | 451.40000000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | FB2 | 452.15000000 | | | 25.000000 | 25.000000 | |
| 2 | 1 | MO | 452.15000000 | | | 4.000000 | 4.000000 | |
| 2 | 1 | MO | 456.40000000 | | | 4.000000 | 4.000000 | |
| 2 | 1 | MO | 457.15000000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | FB2 | 461.12500000 | | | 25.000000 | 25.000000 | |
| 2 | 1 | MO | 461.12500000 | | | 4.000000 | 4.000000 | |
| 2 | 1 | MO | 466.12500000 | | | 4.000000 | 4.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 451.40000000 | | 7K60FXE |
| 2 | 1 | 451.40000000 | | 7K60FXE |
| 1 | 1 | 452.15000000 | | 7K60FXE |
| 2 | 1 | 452.15000000 | | 7K60FXE |
| 2 | 1 | 456.40000000 | | 7K60FXE |
| 2 | 1 | 457.15000000 | | 7K60FXE |
| 1 | 1 | 461.12500000 | | 7K60FXE |
| 2 | 1 | 461.12500000 | | 7K60FXE |
| 2 | 1 | 466.12500000 | | 7K60FXE |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | | 5100 N SAM HOUSTON PARKWAY W, HOUSTON, HARRIS, TX | 29.93777778, -95.50027778 | 38.000 m | B | 13.000 m structure / 16.000 m overall | |
| 2 | | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 16.000 m | | | | 21.100 | |
| 1 | 2 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 5100 N Sam Houston Parkway W, Houston, TX | HARRIS | 2815693050 |
License history
| Date | File or call sign | Action |
|---|
| 2023-05-06 | WQQU281 | LIEXP |
| 2022-12-12 | WQQU281 | LETRES |
| 2013-12-03 | WQQU281 | LETCNS |
| 2013-10-29 | WQQU281 | LIMOD |
| 2013-03-04 | WQQU281 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 3452219 | 2026-08-02 01:21:10 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WQQU281 | ULS 3452219 | 2026-08-02 01:21:10 |
| Status | E | ULS 3452219 | 2026-08-02 01:21:10 |
| Service | IG | ULS 3452219 | 2026-08-02 01:21:10 |
| Grant Date | 2013-03-04 | ULS 3452219 | 2026-08-02 01:21:10 |
| Expiration Date | 2023-03-04 | ULS 3452219 | 2026-08-02 01:21:10 |
| Cancellation Date | 2023-05-06 | ULS 3452219 | 2026-08-02 01:21:10 |