Universal Licensing System
WQSU531
International School of Boston
License details
| ULS identifier | 3535654 |
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| Call sign | WQSU531 |
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| Radio service | IG |
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| Status | E |
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| Grant date | 2013-11-18 |
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| Expiration | 2023-11-18 |
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| Cancellation | 2024-01-20 |
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| Frequency range | 451.3625 - 456.6875 MHz (4 frequencies) |
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| Locations | 1 |
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| Representative location | ARLINGTON, MIDDLESEX, MA |
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| Coordinates | 42.4123333, -71.1587778 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:21:11 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 2 | 1 | MO | 451.36250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 451.68750000 | | | 4.000000 | 4.000000 | |
| 2 | 1 | MO | 456.36250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 456.68750000 | | | 4.000000 | 4.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 2 | 1 | 451.36250000 | | 11K2F3E |
| 1 | 1 | 451.68750000 | | 11K2F3E |
| 2 | 1 | 456.36250000 | | 11K2F3E |
| 1 | 1 | 456.68750000 | | 11K2F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | | CAMBRIDGE, MIDDLESEX, MA | 42.40230556, -71.13269444 | | | | |
| 2 | T | ARLINGTON, MIDDLESEX, MA | 42.41233333, -71.15877778 | | | | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | | | | | |
| 1 | 2 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 45 Matignon Road, Cambridge, MA | MIDDLESEX | 6174991451 |
License history
| Date | File or call sign | Action |
|---|
| 2024-01-20 | WQSU531 | LIEXP |
| 2023-08-28 | WQSU531 | LETRES |
| 2016-01-05 | WQSU531 | LETCNS |
| 2015-04-03 | WQSU531 | LIMOD |
| 2013-12-17 | WQSU531 | LTSFND |
| 2013-12-17 | WQSU531 | LTSFRN |
| 2013-11-18 | WQSU531 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 3535654 | 2026-08-02 01:21:11 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WQSU531 | ULS 3535654 | 2026-08-02 01:21:11 |
| Status | E | ULS 3535654 | 2026-08-02 01:21:11 |
| Service | IG | ULS 3535654 | 2026-08-02 01:21:11 |
| Grant Date | 2013-11-18 | ULS 3535654 | 2026-08-02 01:21:11 |
| Expiration Date | 2023-11-18 | ULS 3535654 | 2026-08-02 01:21:11 |
| Cancellation Date | 2024-01-20 | ULS 3535654 | 2026-08-02 01:21:11 |