Universal Licensing System
KNAA713
TROMBLY BROS INC
License details
| ULS identifier | 1613147 |
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| Call sign | KNAA713 |
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| Radio service | IG |
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| Status | E |
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| Grant date | 2003-12-24 |
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| Expiration | 2014-02-08 |
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| Cancellation | 2014-04-12 |
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| Frequency range | 30.88 MHz |
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| Locations | 2 |
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| Representative location | NORTH ANDOVER, ESSEX, MA |
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| Coordinates | 42.6639722, -71.1178333 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:10:53 |
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Licensee
| Name | TROMBLY BROS INC |
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| Applicant type | U |
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| FRN | 0004094785 |
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| Location | NORTH ANDOVER, MA |
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| Address | 141-153 SUTTON ST, NORTH ANDOVER, MA, 01845 |
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| Phone | 9786831031 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB | 30.88000000 | | | 110.000000 | 110.000000 | |
| 2 | 1 | MO | 30.88000000 | | | 110.000000 | 110.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 30.88000000 | | 20K0F3E |
| 2 | 1 | 30.88000000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | RT 125 BYPASS, NORTH ANDOVER, ESSEX, MA | 42.66397222, -71.11783333 | 76.000 m | | | N |
| 2 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 24.000 m | | | | | |
| 1 | 2 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
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| 1 | 141 SUTTON ST, NORTH ANDOVER, MA | | 6176831031 |
License history
| Date | File or call sign | Action |
|---|
| 2014-04-12 | KNAA713 | LIEXP |
| 2013-11-18 | KNAA713 | LETRES |
| 2003-12-24 | KNAA713 | LIREN |
| 2003-11-17 | KNAA713 | LETRES |
| 2001-11-28 | KNAA713 | AUDOPR |
| 2000-11-22 | KNAA713 | LICCNV |
| 1998-12-09 | KNAA713 | AUTHPR |
| 1998-12-09 | KNAA713 | LIREN |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1613147 | 2026-08-02 01:10:53 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | KNAA713 | ULS 1613147 | 2026-08-02 01:10:53 |
| Status | E | ULS 1613147 | 2026-08-02 01:10:53 |
| Service | IG | ULS 1613147 | 2026-08-02 01:10:53 |
| Grant Date | 2003-12-24 | ULS 1613147 | 2026-08-02 01:10:53 |
| Expiration Date | 2014-02-08 | ULS 1613147 | 2026-08-02 01:10:53 |
| Cancellation Date | 2014-04-12 | ULS 1613147 | 2026-08-02 01:10:53 |