Universal Licensing System
WRDU757
HELIX RE, INC.
License details
| ULS identifier | 4182843 |
|---|
| Call sign | WRDU757 |
|---|
| Radio service | IG |
|---|
| Status | A |
|---|
| Grant date | 2019-07-24 |
|---|
| Expiration | 2029-07-24 |
|---|
| Frequency range | 461.1125 - 469.4875 MHz (5 frequencies) |
|---|
| Locations | 1 |
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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 |
|---|
| 1 | 1 | MOI | 461.11250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MOI | 464.48750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MOI | 466.11250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MOI | 467.86250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MOI | 469.48750000 | | | 4.000000 | 4.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 461.11250000 | | 7K60FXE |
| 1 | 1 | 464.48750000 | | 7K60FXE |
| 1 | 1 | 466.11250000 | | 7K60FXE |
| 1 | 1 | 467.86250000 | | 7K60FXE |
| 1 | 1 | 469.48750000 | | 7K60FXE |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | | | 0.000 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 72 E. 3RD AVE, SAN MATEO, CA | SAN MATEO | 4155165010 |
License history
| Date | File or call sign | Action |
|---|
| 2019-07-24 | WRDU757 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4182843 | 2026-08-02 01:22:59 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRDU757 | ULS 4182843 | 2026-08-02 01:22:59 |
| Status | A | ULS 4182843 | 2026-08-02 01:22:59 |
| Service | IG | ULS 4182843 | 2026-08-02 01:22:59 |
| Grant Date | 2019-07-24 | ULS 4182843 | 2026-08-02 01:22:59 |
| Expiration Date | 2029-07-24 | ULS 4182843 | 2026-08-02 01:22:59 |