Universal Licensing System
WQDD450
Medford Police Department
License details
| ULS identifier | 2737050 |
|---|
| Call sign | WQDD450 |
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| Radio service | PA |
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| Status | E |
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| Grant date | 2015-05-07 |
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| Expiration | 2025-07-28 |
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| Cancellation | 2025-09-27 |
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| Frequency range | 4940 - 4990 MHz (2 frequencies) |
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| Locations | 2 |
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| Representative location | medford, MIDDLESEX, MA |
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| Coordinates | 42.4103611, -71.1100556 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:26:06 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | | 4940.00000000 | 4990.00000000 | | | | |
| 2 | 1 | | 4940.00000000 | 4990.00000000 | | | | |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | medford, MIDDLESEX, MA | 42.41036111, -71.11005556 | | | | |
| 2 | T | medford, MIDDLESEX, MA | 42.41036111, -71.11005556 | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | | | | | | | | |
| 1 | 2 | | | | | | | | |
Special conditions
| Type | Condition code |
|---|
| P | 1035 |
| P | 3055 |
| P | 3059 |
License history
| Date | File or call sign | Action |
|---|
| 2025-09-27 | WQDD450 | LIEXP |
| 2025-07-18 | WQDD450 | ESURNW |
| 2025-06-28 | WQDD450 | ESURNW |
| 2025-05-29 | WQDD450 | ESURNW |
| 2025-05-05 | WQDD450 | LETRES |
| 2015-05-07 | WQDD450 | LIREN |
| 2015-05-06 | WQDD450 | ESUAPR |
| 2015-05-04 | WQDD450 | LETRES |
| 2015-04-29 | WQDD450 | ESURNW |
| 2005-07-28 | WQDD450 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 2737050 | 2026-08-02 01:26:06 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WQDD450 | ULS 2737050 | 2026-08-02 01:26:06 |
| Status | E | ULS 2737050 | 2026-08-02 01:26:06 |
| Service | PA | ULS 2737050 | 2026-08-02 01:26:06 |
| Grant Date | 2015-05-07 | ULS 2737050 | 2026-08-02 01:26:06 |
| Expiration Date | 2025-07-28 | ULS 2737050 | 2026-08-02 01:26:06 |
| Cancellation Date | 2025-09-27 | ULS 2737050 | 2026-08-02 01:26:06 |