Universal Licensing System
WPMZ478
JAMES HUBERT BLAKE HIGH SCHOOL
License details
| ULS identifier | 1803670 |
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| Call sign | WPMZ478 |
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| Radio service | IG |
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| Status | E |
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| Grant date | 1999-04-09 |
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| Expiration | 2004-04-09 |
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| Cancellation | 2004-06-13 |
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| Frequency range | 452.75 - 457.75 MHz (2 frequencies) |
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| Locations | 2 |
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| Representative location | MD |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:26:50 |
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Licensee
| Name | JAMES HUBERT BLAKE HIGH SCHOOL |
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| Applicant type | G |
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| Location | SILVER SPRING, MD |
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| Address | 300 NORWOOD RD, SILVER SPRING, MD, 20905 |
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| Phone | 3018791317 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB2 | 452.75000000 | | | 40.000000 | 40.000000 | |
| 3 | 1 | MO | 452.75000000 | | | 4.000000 | | |
| 2 | 1 | FX1 | 457.75000000 | | | 25.000000 | | |
| 3 | 1 | MO | 457.75000000 | | | 4.000000 | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 452.75000000 | | 20K0F3E |
| 3 | 1 | 452.75000000 | | 20K0F3E |
| 2 | 1 | 457.75000000 | | 20K0F3E |
| 3 | 1 | 457.75000000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 300 NORWOOD ROAD, SILVER SPRING, MONTGOMERY, MD | 39.11288889, -77.01663889 | 183.000 m | B | 12.000 m structure / 15.000 m overall | N |
| 2 | T | MD | | | | | |
| 3 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 15.000 m | | | | 82.000 | |
| 1 | 2 | T | | | | | | | |
| 1 | 3 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 300 NORWOOD ROAD, SILVER SPRING, MD | | 3018791317 |
License history
| Date | File or call sign | Action |
|---|
| 2004-06-13 | WPMZ478 | LIEXP |
| 2004-01-12 | WPMZ478 | LETRES |
| 2001-10-09 | WPMZ478 | AUDOPR |
| 2000-11-23 | WPMZ478 | LICCNV |
| 1999-04-09 | WPMZ478 | LIISS |
| 1999-04-09 | WPMZ478 | AUTHPR |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1803670 | 2026-08-02 01:26:50 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPMZ478 | ULS 1803670 | 2026-08-02 01:26:50 |
| Status | E | ULS 1803670 | 2026-08-02 01:26:50 |
| Service | IG | ULS 1803670 | 2026-08-02 01:26:50 |
| Grant Date | 1999-04-09 | ULS 1803670 | 2026-08-02 01:26:50 |
| Expiration Date | 2004-04-09 | ULS 1803670 | 2026-08-02 01:26:50 |
| Cancellation Date | 2004-06-13 | ULS 1803670 | 2026-08-02 01:26:50 |