Universal Licensing System
WRWC936
GrayMar Environmental Services Inc
License details
| ULS identifier | 4721045 |
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| Call sign | WRWC936 |
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| Radio service | IG |
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| Status | A |
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| Grant date | 2023-02-07 |
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| Expiration | 2033-02-07 |
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| Frequency range | 451.4625 - 457.0375 MHz (5 frequencies) |
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| Locations | 1 |
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| Representative location | Troutdale, MULTNOMAH, OR |
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| Coordinates | 45.5461944, -122.4039167 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:23:08 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | MO | 451.46250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 452.03750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 456.46250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 456.71250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 457.03750000 | | | 4.000000 | 4.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 451.46250000 | | 7K60F1W |
| 1 | 1 | 451.46250000 | | 11K0F3E |
| 1 | 1 | 452.03750000 | | 11K0F3E |
| 1 | 1 | 452.03750000 | | 7K60F1W |
| 1 | 1 | 456.46250000 | | 11K0F3E |
| 1 | 1 | 456.46250000 | | 7K60F1W |
| 1 | 1 | 456.71250000 | | 7K60F1W |
| 1 | 1 | 456.71250000 | | 11K0F3E |
| 1 | 1 | 457.03750000 | | 11K0F3E |
| 1 | 1 | 457.03750000 | | 7K60F1W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | Troutdale, MULTNOMAH, OR | 45.54619444, -122.40391667 | | | | |
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 | 205 NW Corporate Dr, Troutdale, OR | MULTNOMAH | 9714010303 |
License history
| Date | File or call sign | Action |
|---|
| 2023-02-07 | WRWC936 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4721045 | 2026-08-02 01:23:08 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRWC936 | ULS 4721045 | 2026-08-02 01:23:08 |
| Status | A | ULS 4721045 | 2026-08-02 01:23:08 |
| Service | IG | ULS 4721045 | 2026-08-02 01:23:08 |
| Grant Date | 2023-02-07 | ULS 4721045 | 2026-08-02 01:23:08 |
| Expiration Date | 2033-02-07 | ULS 4721045 | 2026-08-02 01:23:08 |