Universal Licensing System
WPRG310
J J MAINTENANCE INC
License details
| ULS identifier | 1829884 |
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| Call sign | WPRG310 |
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| Radio service | IG |
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| Status | E |
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| Grant date | 2000-09-11 |
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| Expiration | 2005-09-11 |
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| Cancellation | 2006-01-07 |
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| Frequency range | 451.325 - 467.05 MHz (4 frequencies) |
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| Locations | 4 |
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| Representative location | SILVER SPRING, MONTGOMERY, MD |
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| Coordinates | 39.0053889, -77.0533056 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:27:09 |
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Licensee
| Name | J J MAINTENANCE INC |
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| Applicant type | C |
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| Location | WASHINGTON, DC |
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| Address | 6825 16TH STREET NW BLDG 2 RM 5260, WASHINGTON, DC, 203066000 |
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| Phone | 2027820950 |
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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 | 451.32500000 | | | 25.000000 | 45.000000 | |
| 3 | 1 | MO | 451.32500000 | | | 4.000000 | | |
| 3 | 1 | MO | 456.32500000 | | | 4.000000 | | |
| 2 | 1 | FB2 | 462.05000000 | | | 25.000000 | 45.000000 | |
| 4 | 1 | MO | 462.05000000 | | | 4.000000 | | |
| 4 | 1 | MO | 467.05000000 | | | 4.000000 | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 451.32500000 | | 20K0F3E |
| 3 | 1 | 451.32500000 | | 20K0F3E |
| 3 | 1 | 456.32500000 | | 20K0F3E |
| 2 | 1 | 462.05000000 | | 20K0F3E |
| 4 | 1 | 462.05000000 | | 20K0F3E |
| 4 | 1 | 467.05000000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | WRAIR BLDG 503 FORNEY DRIVE, SILVER SPRING, MONTGOMERY, MD | 39.00538889, -77.05330556 | 89.000 m | B | 17.000 m structure / 19.000 m overall | N |
| 2 | T | 1050 WEST PERIMITER ROAD, ANDREWS AIR FORCE BA, PRINCE GEORGE'S, MD | 38.80816667, -76.89663889 | 79.000 m | B | 18.000 m structure / 20.000 m overall | N |
| 3 | T | | | | | | |
| 4 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 19.000 m | | | | 28.000 | |
| 1 | 2 | T | | 20.000 m | | | | 34.000 | |
| 1 | 3 | T | | | | | | | |
| 1 | 4 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
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| 1 | 6825 16TH STREET NW, WASHINGTON, DC | | 2027820950 |
License history
| Date | File or call sign | Action |
|---|
| 2006-01-07 | WPRG310 | LIEXP |
| 2005-06-20 | WPRG310 | LETRES |
| 2001-11-05 | WPRG310 | AUDOPR |
| 2000-11-23 | WPRG310 | LICCNV |
| 2000-09-11 | WPRG310 | LIISS |
| 2000-09-11 | WPRG310 | AUTHPR |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1829884 | 2026-08-02 01:27:09 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WPRG310 | ULS 1829884 | 2026-08-02 01:27:09 |
| Status | E | ULS 1829884 | 2026-08-02 01:27:09 |
| Service | IG | ULS 1829884 | 2026-08-02 01:27:09 |
| Grant Date | 2000-09-11 | ULS 1829884 | 2026-08-02 01:27:09 |
| Expiration Date | 2005-09-11 | ULS 1829884 | 2026-08-02 01:27:09 |
| Cancellation Date | 2006-01-07 | ULS 1829884 | 2026-08-02 01:27:09 |