Universal Licensing System
KX4912
WALTHAM, CITY OF
License details
| ULS identifier | 1259673 |
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| Call sign | KX4912 |
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| Radio service | PW |
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| Status | A |
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| Grant date | 2022-04-14 |
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| Expiration | 2032-06-22 |
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| Frequency range | 473.5125 - 473.7875 MHz (4 frequencies) |
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| Locations | 1 |
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| Representative location | MIDDLESEX, MA |
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| Coordinates | 42.3850833, -71.2553333 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:10:17 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 2 | 1 | MO | 473.51250000 | | | 39.000000 | 50.000000 | |
| 2 | 1 | MO | 473.56250000 | | | 39.000000 | 50.000000 | |
| 2 | 1 | MO | 473.73750000 | | | 39.000000 | 50.000000 | |
| 2 | 1 | MO | 473.78750000 | | | 39.000000 | 50.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 2 | 1 | 473.51250000 | | 20K0F3E |
| 2 | 1 | 473.51250000 | | 11K2F3E |
| 2 | 1 | 473.56250000 | | 11K2F3E |
| 2 | 1 | 473.56250000 | | 20K0F3E |
| 2 | 1 | 473.73750000 | | 11K2F3E |
| 2 | 1 | 473.73750000 | | 20K0F3E |
| 2 | 1 | 473.78750000 | | 11K2F3E |
| 2 | 1 | 473.78750000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 2 | T | MIDDLESEX, MA | 42.38508333, -71.25533333 | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 2 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
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| 1 | 155 LEXINGTON, WALTHAM, MA | MIDDLESEX | 6175527258 |
License history
| Date | File or call sign | Action |
|---|
| 2022-04-14 | KX4912 | LIREN |
| 2012-05-03 | KX4912 | LIREN |
| 2012-05-03 | KX4912 | LIRMD |
| 2012-03-26 | KX4912 | LETRES |
| 2002-04-03 | KX4912 | LIREN |
| 2002-03-25 | KX4912 | LETRES |
| 2001-12-10 | KX4912 | AUDOPR |
| 2000-10-20 | KX4912 | LICCNV |
| 1997-05-06 | KX4912 | AUTHPR |
| 1997-05-06 | KX4912 | LIREN |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1259673 | 2026-08-02 01:10:17 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | KX4912 | ULS 1259673 | 2026-08-02 01:10:17 |
| Status | A | ULS 1259673 | 2026-08-02 01:10:17 |
| Service | PW | ULS 1259673 | 2026-08-02 01:10:17 |
| Grant Date | 2022-04-14 | ULS 1259673 | 2026-08-02 01:10:17 |
| Expiration Date | 2032-06-22 | ULS 1259673 | 2026-08-02 01:10:17 |