Universal Licensing System
KNQ423
EASTERN CONTRA COSTA TRANSIT AUTHORITY
License details
| ULS identifier | 1775926 |
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| Call sign | KNQ423 |
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| Radio service | IG |
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| Status | A |
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| Grant date | 2023-09-21 |
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| Expiration | 2033-10-06 |
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| Frequency range | 484.4625 - 487.4625 MHz (2 frequencies) |
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| Locations | 3 |
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| Representative location | CLAYTON, CONTRA COSTA, CA |
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| Coordinates | 37.9429722, -121.8910556 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:16:39 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB2 | 484.46250000 | | | 75.000000 | 172.000000 | |
| 2 | 1 | FX1 | 487.46250000 | | | 30.000000 | 100.000000 | |
| 3 | 1 | MO | 487.46250000 | | | 30.000000 | 60.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 484.46250000 | | 7K60F1W |
| 1 | 1 | 484.46250000 | | 7K60F7W |
| 1 | 1 | 484.46250000 | | 11K0F3E |
| 1 | 1 | 484.46250000 | | 20K0F3E |
| 2 | 1 | 487.46250000 | | 20K0F3E |
| 2 | 1 | 487.46250000 | | 7K60F1W |
| 2 | 1 | 487.46250000 | | 11K0F3E |
| 2 | 1 | 487.46250000 | | 7K60F7W |
| 3 | 1 | 487.46250000 | | 11K0F3E |
| 3 | 1 | 487.46250000 | | 20K0F3E |
| 3 | 1 | 487.46250000 | | 7K60F7W |
| 3 | 1 | 487.46250000 | | 7K60F1W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | KREGOR PEAK, CLAYTON, CONTRA COSTA, CA | 37.94297222, -121.89105556 | 577.000 m | TOWER | 24.000 m structure / 24.000 m overall | N |
| 2 | T | 801 WILBUR AVE, ANTIOCH, CONTRA COSTA, CA | 38.01241667, -121.79133333 | 3.000 m | BANT | 6.000 m structure / 11.000 m overall | N |
| 3 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 24.000 m | | | | 422.000 | |
| 1 | 2 | T | | 11.000 m | | | | -47.000 | |
| 1 | 3 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 801 WILBUR AVE, ANTIOCH, CA | CONTRA COSTA | 9257546622 |
License history
| Date | File or call sign | Action |
|---|
| 2023-09-21 | KNQ423 | LIREN |
| 2019-04-23 | KNQ423 | LIMOD |
| 2013-11-27 | KNQ423 | LIAUA |
| 2013-11-26 | KNQ423 | ESUAPR |
| 2013-08-06 | KNQ423 | LIREN |
| 2013-08-05 | KNQ423 | ESUAPR |
| 2013-07-15 | KNQ423 | LETRES |
| 2013-07-08 | KNQ423 | ESURNW |
| 2010-05-10 | KNQ423 | LIMOD |
| 2003-07-22 | KNQ423 | LIREN |
| 2003-07-14 | KNQ423 | LETRES |
| 2002-04-16 | KNQ423 | LIMOD |
| 2001-10-23 | KNQ423 | AUDOPR |
| 2000-11-23 | KNQ423 | LICCNV |
| 1999-07-16 | KNQ423 | LIMOD |
| 1999-07-16 | KNQ423 | AUTHPR |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1775926 | 2026-08-02 01:16:39 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | KNQ423 | ULS 1775926 | 2026-08-02 01:16:39 |
| Status | A | ULS 1775926 | 2026-08-02 01:16:39 |
| Service | IG | ULS 1775926 | 2026-08-02 01:16:39 |
| Grant Date | 2023-09-21 | ULS 1775926 | 2026-08-02 01:16:39 |
| Expiration Date | 2033-10-06 | ULS 1775926 | 2026-08-02 01:16:39 |