Universal Licensing System
WPKZ877
VANGUARD GEOPHYSICAL SERVICES
License details
| ULS identifier | 1843215 |
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| Call sign | WPKZ877 |
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| Radio service | IG |
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| Status | E |
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| Grant date | 1997-10-28 |
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| Expiration | 2002-10-28 |
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| Cancellation | 2003-02-02 |
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| Frequency range | 153.05 - 153.17 MHz (5 frequencies) |
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| Locations | 1 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:27:14 |
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Licensee
| Name | VANGUARD GEOPHYSICAL SERVICES |
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| Applicant type | C |
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| Location | HOUSTON, TX |
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| Address | 1010 LAMAR ST, HOUSTON, TX, 77002 |
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| Phone | 7136506161 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | MO | 153.05000000 | | | 40.000000 | | |
| 1 | 1 | MO | 153.08000000 | | | 40.000000 | | |
| 1 | 1 | MO | 153.11000000 | | | 40.000000 | | |
| 1 | 1 | MO | 153.14000000 | | | 40.000000 | | |
| 1 | 1 | MO | 153.17000000 | | | 40.000000 | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 153.05000000 | | 20K0F3E |
| 1 | 1 | 153.05000000 | | 20K0F1D |
| 1 | 1 | 153.08000000 | | 20K0F1D |
| 1 | 1 | 153.08000000 | | 20K0F3E |
| 1 | 1 | 153.11000000 | | 20K0F1D |
| 1 | 1 | 153.11000000 | | 20K0F3E |
| 1 | 1 | 153.14000000 | | 20K0F1D |
| 1 | 1 | 153.14000000 | | 20K0F3E |
| 1 | 1 | 153.17000000 | | 20K0F1D |
| 1 | 1 | 153.17000000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
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| 1 | 1010 LAMAR ST, HOUSTON, TX | | 7136506161 |
License history
| Date | File or call sign | Action |
|---|
| 2003-02-02 | WPKZ877 | LIEXP |
| 2002-08-05 | WPKZ877 | LETRES |
| 2002-05-22 | WPKZ877 | LETAUS |
| 2000-11-23 | WPKZ877 | LICCNV |
| 1997-10-29 | WPKZ877 | AUTHPR |
| 1997-10-28 | WPKZ877 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1843215 | 2026-08-02 01:27:14 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPKZ877 | ULS 1843215 | 2026-08-02 01:27:14 |
| Status | E | ULS 1843215 | 2026-08-02 01:27:14 |
| Service | IG | ULS 1843215 | 2026-08-02 01:27:14 |
| Grant Date | 1997-10-28 | ULS 1843215 | 2026-08-02 01:27:14 |
| Expiration Date | 2002-10-28 | ULS 1843215 | 2026-08-02 01:27:14 |
| Cancellation Date | 2003-02-02 | ULS 1843215 | 2026-08-02 01:27:14 |