Universal Licensing System
WRDU400
Jack Resnick and Sons
License details
| ULS identifier | 4181753 |
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| Call sign | WRDU400 |
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| Radio service | IG |
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| Status | A |
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| Grant date | 2019-07-22 |
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| Expiration | 2029-07-22 |
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| Frequency range | 451.85 - 457.2 MHz (4 frequencies) |
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| Locations | 2 |
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| Representative location | New York, NEW YORK, NY |
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| Coordinates | 40.7520556, -73.9826389 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:22:59 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 3 | 1 | FB2 | 451.85000000 | | | 40.000000 | 40.000000 | |
| 4 | 1 | MO | 451.85000000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | FB2 | 452.20000000 | | | 40.000000 | 40.000000 | |
| 2 | 1 | MO | 452.20000000 | | | 4.000000 | 4.000000 | |
| 4 | 1 | MO | 456.85000000 | | | 4.000000 | 4.000000 | |
| 2 | 1 | MO | 457.20000000 | | | 4.000000 | 4.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 3 | 1 | 451.85000000 | | 7K60FXE |
| 4 | 1 | 451.85000000 | | 7K60FXE |
| 1 | 1 | 452.20000000 | | 7K60FXE |
| 2 | 1 | 452.20000000 | | 7K60FXE |
| 4 | 1 | 456.85000000 | | 7K60FXE |
| 2 | 1 | 457.20000000 | | 7K60FXE |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 485 Madison Ave, New York, NEW YORK, NY | 40.75869444, -73.97458333 | 18.000 m | B | 76.200 m structure / 76.200 m overall | |
| 2 | T | | | | | | |
| 3 | T | 8 West 40th Street, New York, NEW YORK, NY | 40.75205556, -73.98263889 | 21.000 m | B | 67.000 m structure / 67.000 m overall | N |
| 4 | T | | | | | | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 12.300 m | | | | 15.700 | |
| 1 | 2 | T | | | | | | | |
| 1 | 3 | T | | 15.200 m | | | | 22.900 | |
| 1 | 4 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 485 Madison Ave, New York, NY | NEW YORK | 6467353300 |
License history
| Date | File or call sign | Action |
|---|
| 2026-07-20 | WRDU400 | ANATRM |
| 2026-07-20 | WRDU400 | FRATRM |
| 2026-07-20 | WRDU400 | LOATRM |
| 2026-05-13 | WRDU400 | LETTRS |
| 2026-05-13 | WRDU400 | PNLISR |
| 2026-01-06 | WRDU400 | LETCNS |
| 2025-04-08 | WRDU400 | LIMOD |
| 2020-07-28 | WRDU400 | LETCNS |
| 2019-10-24 | WRDU400 | LIMOD |
| 2019-07-22 | WRDU400 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4181753 | 2026-08-02 01:22:59 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRDU400 | ULS 4181753 | 2026-08-02 01:22:59 |
| Status | A | ULS 4181753 | 2026-08-02 01:22:59 |
| Service | IG | ULS 4181753 | 2026-08-02 01:22:59 |
| Grant Date | 2019-07-22 | ULS 4181753 | 2026-08-02 01:22:59 |
| Expiration Date | 2029-07-22 | ULS 4181753 | 2026-08-02 01:22:59 |