Universal Licensing System
WRDA502
Surface Guard Inc.
License details
| ULS identifier | 4133008 |
|---|
| Call sign | WRDA502 |
|---|
| Radio service | IG |
|---|
| Status | A |
|---|
| Grant date | 2019-03-12 |
|---|
| Expiration | 2029-03-12 |
|---|
| Frequency range | 451.3875 - 456.4625 MHz (5 frequencies) |
|---|
| Locations | 1 |
|---|
| Representative location | Aurora, DUPAGE, IL |
|---|
| Coordinates | 41.7664167, -88.2249722 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:22:37 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | MO | 451.38750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 452.11250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 452.18750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 452.63750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 456.46250000 | | | 4.000000 | 4.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 451.38750000 | | 7K60FXW |
| 1 | 1 | 451.38750000 | | 11K2F3E |
| 1 | 1 | 452.11250000 | | 11K2F3E |
| 1 | 1 | 452.11250000 | | 7K60FXW |
| 1 | 1 | 452.18750000 | | 11K2F3E |
| 1 | 1 | 452.18750000 | | 7K60FXW |
| 1 | 1 | 452.63750000 | | 7K60FXW |
| 1 | 1 | 452.63750000 | | 11K2F3E |
| 1 | 1 | 456.46250000 | | 7K60FXW |
| 1 | 1 | 456.46250000 | | 11K2F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | Aurora, DUPAGE, IL | 41.76641667, -88.22497222 | | | | |
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 | 515 Enterprise St, Aurora, IL | DUPAGE | 6302368250 |
License history
| Date | File or call sign | Action |
|---|
| 2020-04-20 | WRDA502 | FRATRE |
| 2020-04-15 | WRDA502 | LETTRS |
| 2020-04-15 | WRDA502 | PNLISR |
| 2020-01-22 | WRDA502 | LIMOD |
| 2019-12-10 | WRDA502 | LETCNS |
| 2019-03-12 | WRDA502 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4133008 | 2026-08-02 01:22:37 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRDA502 | ULS 4133008 | 2026-08-02 01:22:37 |
| Status | A | ULS 4133008 | 2026-08-02 01:22:37 |
| Service | IG | ULS 4133008 | 2026-08-02 01:22:37 |
| Grant Date | 2019-03-12 | ULS 4133008 | 2026-08-02 01:22:37 |
| Expiration Date | 2029-03-12 | ULS 4133008 | 2026-08-02 01:22:37 |