Universal Licensing System
WNJB474
STRANGE & CHALMERS INC
License details
| ULS identifier | 1862817 |
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| Call sign | WNJB474 |
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| Radio service | IG |
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| Status | E |
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| Grant date | 1997-03-10 |
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| Expiration | 2002-03-10 |
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| Cancellation | 2002-05-12 |
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| Frequency range | 451.85 - 456.85 MHz (2 frequencies) |
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| Locations | 3 |
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| Representative location | WALNUT CREEK, CONTRA COSTA, CA |
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| Coordinates | 37.8815833, -121.9191389 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:27:23 |
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Licensee
| Name | STRANGE & CHALMERS INC |
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| Applicant type | C |
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| Location | VALLEJO, CA |
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| Address | 924 LEMON ST, VALLEJO, CA, 94590 |
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| Phone | 7076439075 |
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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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| 1 | 1 | FB2 | 451.85000000 | | | 75.000000 | 75.000000 | |
| 3 | 1 | MO | 451.85000000 | | | 30.000000 | | |
| 2 | 1 | FX1 | 456.85000000 | | | 30.000000 | | |
| 3 | 1 | MO | 456.85000000 | | | 30.000000 | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 451.85000000 | | 20K0F3E |
| 3 | 1 | 451.85000000 | | 20K0F3E |
| 2 | 1 | 456.85000000 | | 20K0F3E |
| 3 | 1 | 456.85000000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | MOUNT DIABLO, WALNUT CREEK, CONTRA COSTA, CA | 37.88158333, -121.91913889 | 1092.000 m | TOWER | 51.000 m structure / 51.000 m overall | N |
| 2 | T | CA | | | | | |
| 3 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 51.000 m | | | | 919.000 | |
| 1 | 2 | T | | | | | | | |
| 1 | 3 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 924 LEMON ST, VALLEJO, CA | | 7076439075 |
License history
| Date | File or call sign | Action |
|---|
| 2002-05-12 | WNJB474 | LIEXP |
| 2001-12-17 | WNJB474 | LETRES |
| 2001-11-06 | WNJB474 | LETAUS |
| 2000-11-24 | WNJB474 | LICCNV |
| 1997-03-10 | WNJB474 | AUTHPR |
| 1997-03-10 | WNJB474 | LIMOD |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1862817 | 2026-08-02 01:27:23 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WNJB474 | ULS 1862817 | 2026-08-02 01:27:23 |
| Status | E | ULS 1862817 | 2026-08-02 01:27:23 |
| Service | IG | ULS 1862817 | 2026-08-02 01:27:23 |
| Grant Date | 1997-03-10 | ULS 1862817 | 2026-08-02 01:27:23 |
| Expiration Date | 2002-03-10 | ULS 1862817 | 2026-08-02 01:27:23 |
| Cancellation Date | 2002-05-12 | ULS 1862817 | 2026-08-02 01:27:23 |