Universal Licensing System
KNT399
Northrop Grumman Systems Corporation
License details
| ULS identifier | 1775939 |
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| Call sign | KNT399 |
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| Radio service | IG |
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| Status | A |
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| Grant date | 2024-03-27 |
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| Expiration | 2034-03-22 |
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| Frequency range | 496.0375 - 499.0375 MHz (2 frequencies) |
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| Locations | 5 |
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| Representative location | LINTHICUM, ANNE ARUNDEL, MD |
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| Coordinates | 39.1856667, -76.6863611 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:14:10 |
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Licensee
| Name | Northrop Grumman Systems Corporation |
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| Applicant type | C |
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| FRN | 0003800133 |
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| Location | WASHINGTON, DC |
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| Address | 1800 M Street, NW, Suite 800, WASHINGTON, DC, 20036 |
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| Phone | 2027834141 |
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| Email | [email protected] |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB2 | 496.03750000 | | | 60.000000 | 180.000000 | |
| 2 | 1 | FB | 496.03750000 | | | 30.000000 | 30.000000 | |
| 3 | 1 | FB | 496.03750000 | | | 30.000000 | 30.000000 | |
| 4 | 1 | FB | 496.03750000 | | | 30.000000 | 30.000000 | |
| 5 | 1 | MO | 496.03750000 | | | 5.000000 | 5.000000 | |
| 5 | 1 | MO | 496.03750000 | | | 50.000000 | 150.000000 | |
| 2 | 1 | FX1 | 499.03750000 | | | 30.000000 | 30.000000 | |
| 3 | 1 | FX1 | 499.03750000 | | | 30.000000 | 30.000000 | |
| 4 | 1 | FX1 | 499.03750000 | | | 30.000000 | 30.000000 | |
| 5 | 1 | MO | 499.03750000 | | | 50.000000 | 150.000000 | |
| 5 | 1 | MO | 499.03750000 | | | 5.000000 | 5.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 496.03750000 | | 11K2F3E |
| 2 | 1 | 496.03750000 | | 11K2F3E |
| 3 | 1 | 496.03750000 | | 11K2F3E |
| 4 | 1 | 496.03750000 | | 11K2F3E |
| 5 | 1 | 496.03750000 | | 11K2F3E |
| 5 | 1 | 496.03750000 | | 11K2F3E |
| 2 | 1 | 499.03750000 | | 11K2F3E |
| 3 | 1 | 499.03750000 | | 11K2F3E |
| 4 | 1 | 499.03750000 | | 11K2F3E |
| 5 | 1 | 499.03750000 | | 11K2F3E |
| 5 | 1 | 499.03750000 | | 11K2F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 7323 AVIATION BLVD, LINTHICUM, ANNE ARUNDEL, MD | 39.18566667, -76.68636111 | 31.000 m | B | 17.000 m structure / 19.000 m overall | N |
| 2 | T | 7323 AVIATION BLVD, LINTHICUM, ANNE ARUNDEL, MD | 39.20094444, -76.68636111 | 32.000 m | B | 8.000 m structure / 10.000 m overall | N |
| 3 | T | 1580A W NURSERY RD, LINTHICUM, ANNE ARUNDEL, MD | 39.20650000, -76.68136111 | 56.000 m | B | 23.000 m structure / 25.000 m overall | N |
| 4 | T | 7040B TROY HILL DR, ELKRIDGE, HOWARD, MD | 39.19955556, -76.75386111 | 76.000 m | B | 9.000 m structure / 11.000 m overall | N |
| 5 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 19.000 m | | | | 2.000 | |
| 1 | 2 | T | | 10.000 m | | | | -8.000 | |
| 1 | 3 | T | | 25.000 m | | | | 29.000 | |
| 1 | 4 | T | | 11.000 m | | | | 16.000 | |
| 1 | 5 | T | | | | | | | |
| 2 | 5 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 7323 Aviation Blvd, Linthicum, MD | ANNE ARUNDEL | 4107655623 |
License history
| Date | File or call sign | Action |
|---|
| 2026-04-24 | KNT399 | LIAUA |
| 2024-03-27 | KNT399 | LIREN |
| 2023-12-25 | KNT399 | LETRES |
| 2014-02-20 | KNT399 | LIREN |
| 2014-02-19 | KNT399 | LIMOD |
| 2014-02-19 | KNT399 | ESUAPR |
| 2013-12-23 | KNT399 | LETRES |
| 2012-12-31 | KNT399 | ESUAPR |
| 2012-09-18 | KNT399 | LIAUA |
| 2012-09-16 | KNT399 | ESUAPR |
| 2011-07-30 | KNT399 | ESCAPR |
| 2011-07-30 | KNT399 | LIAUA |
| 2011-07-29 | KNT399 | ESUAPR |
| 2011-07-29 | KNT399 | EFUAPR |
| 2011-03-31 | KNT399 | LITRAN |
| 2011-01-28 | KNT399 | ESUAPR |
| 2008-04-28 | KNT399 | ESUAPR |
| 2008-04-25 | KNT399 | LIAUA |
| 2008-04-24 | KNT399 | ESUAPR |
| 2005-01-14 | KNT399 | LIAUA |
| 2005-01-13 | KNT399 | ESUAPR |
| 2003-12-29 | KNT399 | LETRES |
| 2002-11-08 | KNT399 | LIAUA |
| 2002-04-10 | KNT399 | LIAUA |
| 2002-03-02 | KNT399 | LIAUA |
| 2002-01-17 | KNT399 | AUDOPR |
| 2001-05-10 | KNT399 | LITRAN |
| 2000-11-23 | KNT399 | COR |
| 2000-11-23 | KNT399 | LICCNV |
| 2000-07-12 | KNT399 | AUTHPR |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1775939 | 2026-08-02 01:14:10 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | KNT399 | ULS 1775939 | 2026-08-02 01:14:10 |
| Status | A | ULS 1775939 | 2026-08-02 01:14:10 |
| Service | IG | ULS 1775939 | 2026-08-02 01:14:10 |
| Grant Date | 2024-03-27 | ULS 1775939 | 2026-08-02 01:14:10 |
| Expiration Date | 2034-03-22 | ULS 1775939 | 2026-08-02 01:14:10 |