Universal Licensing System
KZX51
National Grid USA Service Company Inc.
License details
| ULS identifier | 967872 |
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| Call sign | KZX51 |
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| Radio service | MG |
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| Status | C |
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| Grant date | 2012-02-29 |
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| Expiration | 2022-04-30 |
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| Cancellation | 2017-08-31 |
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| Frequency range | 6585 - 6655 MHz (3 frequencies) |
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| Locations | 3 |
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| Representative location | MONSON, HAMPDEN, MA |
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| Coordinates | 42.1420278, -72.3478333 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:47:45 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FXO | 6585.00000000 | | | | | |
| 1 | 2 | FXO | 6605.00000000 | | | | | |
| 1 | 3 | FXO | 6655.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 6585.00000000 | | 10M0F9W |
| 1 | 2 | 6605.00000000 | | 10M0F9W |
| 1 | 3 | 6655.00000000 | | 10M0F8W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | BALD PEAK OFF HOVEY RD, MONSON, HAMPDEN, MA | 42.14202778, -72.34783333 | 292.000 m | | 67.100 m overall | |
| 2 | R | | 42.30341667, -71.89672222 | 416.100 m | | | |
| 3 | R | | 42.14536111, -72.63369444 | 55.800 m | | | |
| 4 | R | | 42.15119444, -72.54869444 | 69.000 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | V | 39.3000 | 64.1000 | | |
| 1 | 2 | R | | | | 41.4000 | | | |
| 1 | 3 | R | | | | 35.8000 | | | |
| 1 | 4 | R | RFS Cablewave PAL6-65A | | | 39.9000 | | | |
| 2 | 1 | T | | | H | 39.3000 | 271.0000 | | |
| 3 | 1 | T | RFS Cablewave PAL6-65A | | H | 39.9000 | 273.6000 | | |
License history
| Date | File or call sign | Action |
|---|
| 2017-09-01 | KZX51 | LICAN |
| 2012-02-29 | KZX51 | LIREN |
| 2012-02-28 | KZX51 | ESUAPR |
| 2012-02-06 | KZX51 | LETRES |
| 2009-01-22 | KZX51 | LTSAPR |
| 2009-01-22 | KZX51 | LIAUA |
| 2009-01-21 | KZX51 | LIAUA |
| 2009-01-20 | KZX51 | ESUAPR |
| 2006-01-17 | KZX51 | LETCNS |
| 2004-10-19 | KZX51 | LIMOD |
| 2004-06-09 | KZX51 | LTSAPR |
| 2004-06-08 | KZX51 | EFUAPR |
| 2004-06-08 | KZX51 | ESUAPR |
| 2002-02-05 | KZX51 | LIREN |
| 2000-05-12 | KZX51 | LIAUA |
| 2000-03-22 | KZX51 | LITRAN |
| 1999-08-13 | KZX51 | LICCNV |
| 1997-05-01 | KZX51 | LIREN |
| 1992-04-30 | KZX51 | LIMOD |
| 1992-03-23 | KZX51 | LIMOD |
| 1987-05-08 | KZX51 | LIMOD |
| 1984-11-09 | KZX51 | LIMOD |
| 1981-03-30 | KZX51 | LIMOD |
| 1980-05-20 | KZX51 | LIMOD |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 967872 | 2026-08-02 02:47:45 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | KZX51 | ULS 967872 | 2026-08-02 02:47:45 |
| Status | C | ULS 967872 | 2026-08-02 02:47:45 |
| Service | MG | ULS 967872 | 2026-08-02 02:47:45 |
| Grant Date | 2012-02-29 | ULS 967872 | 2026-08-02 02:47:45 |
| Expiration Date | 2022-04-30 | ULS 967872 | 2026-08-02 02:47:45 |
| Cancellation Date | 2017-08-31 | ULS 967872 | 2026-08-02 02:47:45 |