Universal Licensing System
WRBM399
HENRY M JACKSON FOUNDATION
License details
| ULS identifier | 4038972 |
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| Call sign | WRBM399 |
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| Radio service | IG |
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| Status | A |
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| Grant date | 2018-04-26 |
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| Expiration | 2028-04-26 |
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| Frequency range | 452.1375 - 457.8375 MHz (5 frequencies) |
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| Locations | 1 |
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| Representative location | BETHESDA, MONTGOMERY, MD |
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| Coordinates | 39.0292222, -77.1376667 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:21:52 |
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Licensee
| Name | HENRY M JACKSON FOUNDATION |
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| Applicant type | C |
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| FRN | 0027368562 |
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| Location | BETHESDA, MD |
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| Address | 6720 A ROCKLEDGE DR, BETHESDA, MD, 20817 |
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| Phone | 2406942296 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | MO | 452.13750000 | | | 4.000000 | 2.000000 | |
| 1 | 1 | MO | 456.31250000 | | | 4.000000 | 2.000000 | |
| 1 | 1 | MO | 456.73750000 | | | 4.000000 | 2.000000 | |
| 1 | 1 | MO | 457.16250000 | | | 4.000000 | 2.000000 | |
| 1 | 1 | MO | 457.83750000 | | | 4.000000 | 2.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 452.13750000 | | 7K60FXD |
| 1 | 1 | 452.13750000 | | 7K60FXE |
| 1 | 1 | 452.13750000 | | 11K0F3E |
| 1 | 1 | 456.31250000 | | 7K60FXD |
| 1 | 1 | 456.31250000 | | 7K60FXE |
| 1 | 1 | 456.31250000 | | 11K0F3E |
| 1 | 1 | 456.73750000 | | 7K60FXE |
| 1 | 1 | 456.73750000 | | 11K0F3E |
| 1 | 1 | 456.73750000 | | 7K60FXD |
| 1 | 1 | 457.16250000 | | 7K60FXD |
| 1 | 1 | 457.16250000 | | 7K60FXE |
| 1 | 1 | 457.16250000 | | 11K0F3E |
| 1 | 1 | 457.83750000 | | 7K60FXD |
| 1 | 1 | 457.83750000 | | 11K0F3E |
| 1 | 1 | 457.83750000 | | 7K60FXE |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | BETHESDA, MONTGOMERY, MD | 39.02922222, -77.13766667 | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
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| 1 | 6720 A ROCKLEDGE DR, BETHESDA, MD | MONTGOMERY | 2406942296 |
License history
| Date | File or call sign | Action |
|---|
| 2019-06-05 | WRBM399 | PNLISR |
| 2019-06-05 | WRBM399 | LETTRS |
| 2019-02-16 | WRBM399 | LETCNS |
| 2018-04-26 | WRBM399 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4038972 | 2026-08-02 01:21:52 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRBM399 | ULS 4038972 | 2026-08-02 01:21:52 |
| Status | A | ULS 4038972 | 2026-08-02 01:21:52 |
| Service | IG | ULS 4038972 | 2026-08-02 01:21:52 |
| Grant Date | 2018-04-26 | ULS 4038972 | 2026-08-02 01:21:52 |
| Expiration Date | 2028-04-26 | ULS 4038972 | 2026-08-02 01:21:52 |