Universal Licensing System
KNNJ503
SOUTHWEST RESEARCH INSTITUTE
License details
| ULS identifier | 1767693 |
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| Call sign | KNNJ503 |
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| Radio service | IG |
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| Status | T |
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| Grant date | 2001-02-09 |
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| Expiration | 2011-02-07 |
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| Cancellation | 2002-06-27 |
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| Frequency range | 464.95 - 469.95 MHz (2 frequencies) |
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| Locations | 3 |
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| Representative location | SAN ANTONIO, BEXAR, TX |
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| Coordinates | 29.4438333, -98.6072500 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-16 07:06:25 |
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Licensee
| Name | SOUTHWEST RESEARCH INSTITUTE |
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| Applicant type | C |
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| Location | SAN ANTONIO, TX |
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| Address | PO DRAWER 28510, SAN ANTONIO, TX, 782280510 |
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| Phone | 2106845111 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
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| 2 | 1 | FX2 | 464.95000000 | | | 10.000000 | 40.000000 | |
| 3 | 1 | FX2T | 464.95000000 | | | 10.000000 | 40.000000 | |
| 1 | 1 | FX1 | 469.95000000 | | | 10.000000 | 40.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 2 | 1 | 464.95000000 | | 20K0F1D |
| 3 | 1 | 464.95000000 | | 20K0F1D |
| 1 | 1 | 469.95000000 | | 20K0F1D |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
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| 1 | T | 6220 CULEBRA RD, SAN ANTONIO, BEXAR, TX | 29.44383333, -98.60725000 | 240.000 m | B | 20.000 m structure / 22.000 m overall | N |
| 2 | T | 6630 W QUEENS CROWN, SAN ANTONIO, BEXAR, TX | 29.54466667, -98.35752778 | 305.000 m | TOWER | 49.000 m structure / 55.000 m overall | N |
| 3 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
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| 1 | 1 | T | | 10.000 m | | | | 0.000 | |
| 1 | 2 | T | | 22.000 m | | | | 0.000 | |
| 1 | 3 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
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| 1 | 6220 CULEBRA RD, SAN ANTONIO, TX | | 2105225050 |
License history
| Date | File or call sign | Action |
|---|
| 2002-06-27 | KNNJ503 | LITERM |
| 2001-12-31 | KNNJ503 | AUDCAN |
| 2001-02-09 | KNNJ503 | LIREN |
| 2000-11-28 | KNNJ503 | LETRES |
| 2000-11-23 | KNNJ503 | LICCNV |
| 1996-02-08 | KNNJ503 | AUTHPR |
| 1996-02-07 | KNNJ503 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
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| ULS | 1767693 | 2026-08-16 07:06:25 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | KNNJ503 | ULS 1767693 | 2026-08-16 07:06:25 |
| Status | T | ULS 1767693 | 2026-08-16 07:06:25 |
| Service | IG | ULS 1767693 | 2026-08-16 07:06:25 |
| Grant Date | 2001-02-09 | ULS 1767693 | 2026-08-16 07:06:25 |
| Expiration Date | 2011-02-07 | ULS 1767693 | 2026-08-16 07:06:25 |
| Cancellation Date | 2002-06-27 | ULS 1767693 | 2026-08-16 07:06:25 |