Universal Licensing System
WRDU684
COLUMBIA, TOWN OF - HORACE W. PORTER SCHOOL
License details
| ULS identifier | 4182614 |
|---|
| Call sign | WRDU684 |
|---|
| Radio service | IG |
|---|
| Status | A |
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| Grant date | 2019-07-24 |
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| Expiration | 2029-07-24 |
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| Frequency range | 451.4375 - 468.3 MHz (4 frequencies) |
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| Locations | 2 |
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| Representative location | COLUMBIA, TOLLAND, CT |
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| Coordinates | 41.7045556, -72.3008333 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:23:06 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 2 | 1 | MO | 451.43750000 | | | 6.000000 | 6.000000 | |
| 2 | 1 | MO | 451.43750000 | | | 5.000000 | 5.000000 | |
| 2 | 1 | MO | 452.41250000 | | | 5.000000 | 5.000000 | |
| 2 | 1 | MO | 452.41250000 | | | 6.000000 | 6.000000 | |
| 1 | 1 | FB2 | 463.30000000 | | | 30.000000 | 50.000000 | |
| 2 | 1 | MO | 463.30000000 | | | 25.000000 | 25.000000 | |
| 2 | 1 | MO | 463.30000000 | | | 5.000000 | 5.000000 | |
| 2 | 1 | MO | 468.30000000 | | | 25.000000 | 25.000000 | |
| 2 | 1 | MO | 468.30000000 | | | 5.000000 | 5.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 2 | 1 | 451.43750000 | | 11K2F3E |
| 2 | 1 | 451.43750000 | | 11K2F3E |
| 2 | 1 | 452.41250000 | | 11K2F3E |
| 2 | 1 | 452.41250000 | | 11K2F3E |
| 1 | 1 | 463.30000000 | | 11K2F3E |
| 2 | 1 | 463.30000000 | | 11K2F3E |
| 2 | 1 | 463.30000000 | | 11K2F3E |
| 2 | 1 | 468.30000000 | | 11K2F3E |
| 2 | 1 | 468.30000000 | | 11K2F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 3 SCHOOL HOUSE RD, COLUMBIA, TOLLAND, CT | 41.70455556, -72.30083333 | 157.000 m | B | 8.000 m structure / 9.200 m overall | |
| 2 | T | TOLLAND, CT | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 9.200 m | V | 3.0000 | 360.0000 | 26.700 | |
| 1 | 2 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 3 SCHOOL HOUSE RD, COLUMBIA, CT | TOLLAND | 8602289493 |
License history
| Date | File or call sign | Action |
|---|
| 2019-08-28 | WRDU684 | LIAUA |
| 2019-07-24 | WRDU684 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4182614 | 2026-08-02 01:23:06 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRDU684 | ULS 4182614 | 2026-08-02 01:23:06 |
| Status | A | ULS 4182614 | 2026-08-02 01:23:06 |
| Service | IG | ULS 4182614 | 2026-08-02 01:23:06 |
| Grant Date | 2019-07-24 | ULS 4182614 | 2026-08-02 01:23:06 |
| Expiration Date | 2029-07-24 | ULS 4182614 | 2026-08-02 01:23:06 |