Universal Licensing System
WRAK821
Sudbury Police Department
License details
| ULS identifier | 3984865 |
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| Call sign | WRAK821 |
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| Radio service | MW |
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| Status | A |
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| Grant date | 2017-12-18 |
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| Expiration | 2027-12-18 |
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| Frequency range | 17845 MHz |
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| Locations | 2 |
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| Representative location | Sudbury, MIDDLESEX, MA |
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| Coordinates | 42.4025000, -71.4336111 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:45:19 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FXO | 17845.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 17845.00000000 | | 28M4D7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | Maynard Road, Sudbury, MIDDLESEX, MA | 42.40250000, -71.43361111 | 110.300 m | TANK | 18.300 m structure / 21.300 m overall | |
| 2 | R | | 42.34680556, -71.44958333 | 176.900 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | DRAGONWAVE A-ANT-18G-24-C-R | | V | 38.6000 | 192.0000 | | |
| 1 | 2 | R | DRAGONWAVE A-ANT-18G-24-C-R | | | 38.6000 | | | |
License history
| Date | File or call sign | Action |
|---|
| 2019-04-09 | WRAK821 | LETCNS |
| 2017-12-18 | WRAK821 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 3984865 | 2026-08-02 02:45:19 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRAK821 | ULS 3984865 | 2026-08-02 02:45:19 |
| Status | A | ULS 3984865 | 2026-08-02 02:45:19 |
| Service | MW | ULS 3984865 | 2026-08-02 02:45:19 |
| Grant Date | 2017-12-18 | ULS 3984865 | 2026-08-02 02:45:19 |
| Expiration Date | 2027-12-18 | ULS 3984865 | 2026-08-02 02:45:19 |