Universal Licensing System
KNNN509
ROCKVILLE CENTER INC
License details
| ULS identifier | 1633168 |
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| Call sign | KNNN509 |
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| Radio service | IG |
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| Status | E |
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| Grant date | 1996-03-12 |
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| Expiration | 2001-03-12 |
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| Cancellation | 2001-05-13 |
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| Frequency range | 151.625 - 151.925 MHz (3 frequencies) |
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| Locations | 2 |
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| Representative location | MONTGOMERY, MD |
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| Coordinates | 39.0834444, -77.1163611 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:27:56 |
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Licensee
| Name | ROCKVILLE CENTER INC |
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| Applicant type | C |
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| Location | ROCKVILLE, MD |
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| Address | 250 HUNGERFORD DR STE 195, ROCKVILLE, MD, 20850 |
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| Phone | 3012514146 |
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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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| 2 | 1 | MOI | 151.62500000 | | | 5.000000 | 5.000000 | |
| 1 | 1 | MO | 151.80500000 | | | 5.000000 | 5.000000 | |
| 1 | 1 | MO | 151.92500000 | | | 5.000000 | 5.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 2 | 1 | 151.62500000 | | 20K0F3E |
| 1 | 1 | 151.80500000 | | 20K0F3E |
| 1 | 1 | 151.92500000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | MONTGOMERY, MD | 39.08344444, -77.11636111 | | | | |
| 2 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | | | | | |
| 1 | 2 | T | | | | | | | |
License history
| Date | File or call sign | Action |
|---|
| 2001-05-13 | KNNN509 | LIEXP |
| 2000-12-20 | KNNN509 | LETRES |
| 2000-11-23 | KNNN509 | LICCNV |
| 1996-03-15 | KNNN509 | AUTHPR |
| 1996-03-12 | KNNN509 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1633168 | 2026-08-02 01:27:56 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | KNNN509 | ULS 1633168 | 2026-08-02 01:27:56 |
| Status | E | ULS 1633168 | 2026-08-02 01:27:56 |
| Service | IG | ULS 1633168 | 2026-08-02 01:27:56 |
| Grant Date | 1996-03-12 | ULS 1633168 | 2026-08-02 01:27:56 |
| Expiration Date | 2001-03-12 | ULS 1633168 | 2026-08-02 01:27:56 |
| Cancellation Date | 2001-05-13 | ULS 1633168 | 2026-08-02 01:27:56 |