Universal Licensing System
WRDM809
Montgomery, County of
License details
| ULS identifier | 4167898 |
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| Call sign | WRDM809 |
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| Radio service | YG |
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| Status | A |
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| Grant date | 2019-06-06 |
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| Expiration | 2029-06-06 |
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| Frequency range | 452.45 - 466.6125 MHz (3 frequencies) |
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| Locations | 4 |
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| Representative location | Henderson, MONTGOMERY, MD |
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| Coordinates | 39.2127778, -77.2378889 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:10:10 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 3 | 1 | FB2 | 452.45000000 | | | 100.000000 | 140.000000 | |
| 4 | 1 | MO | 457.45000000 | | | 35.000000 | 35.000000 | |
| 1 | 1 | FB2 | 461.61250000 | | | 100.000000 | 140.000000 | |
| 2 | 1 | MO | 466.61250000 | | | 35.000000 | 35.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 3 | 1 | 452.45000000 | | 7K60F7E |
| 3 | 1 | 452.45000000 | | 7K60FXD |
| 3 | 1 | 452.45000000 | | 7K60F7D |
| 3 | 1 | 452.45000000 | | 7K60FXE |
| 3 | 1 | 452.45000000 | | 11K0F3E |
| 4 | 1 | 457.45000000 | | 7K60FXE |
| 4 | 1 | 457.45000000 | | 7K60F7D |
| 4 | 1 | 457.45000000 | | 7K60F7E |
| 4 | 1 | 457.45000000 | | 11K0F3E |
| 4 | 1 | 457.45000000 | | 7K60FXD |
| 1 | 1 | 461.61250000 | | 7K60FXE |
| 1 | 1 | 461.61250000 | | 7K60F7D |
| 1 | 1 | 461.61250000 | | 11K0F3E |
| 1 | 1 | 461.61250000 | | 7K60FXD |
| 1 | 1 | 461.61250000 | | 7K60F7E |
| 2 | 1 | 466.61250000 | | 11K0F3E |
| 2 | 1 | 466.61250000 | | 7K60FXD |
| 2 | 1 | 466.61250000 | | 7K60F7E |
| 2 | 1 | 466.61250000 | | 7K60FXE |
| 2 | 1 | 466.61250000 | | 7K60F7D |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | Rt 27 & Brink Rd, Henderson, MONTGOMERY, MD | 39.21277778, -77.23788889 | 195.300 m | TANK | 40.000 m structure / 44.000 m overall | |
| 2 | T | | | | | | |
| 3 | T | 15916 New Hampshire Ave, Spencerville, MONTGOMERY, MD | 39.12150000, -76.99108333 | 154.400 m | TANK | 38.000 m structure / 40.000 m overall | |
| 4 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 40.000 m | | | | 83.600 | |
| 1 | 2 | T | | | | | | | |
| 1 | 3 | T | | 40.000 m | | | | 81.400 | |
| 1 | 4 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 100 Maryland Ave, Rockville, MD | MONTGOMERY | 3012791819 |
| 2 | 16647 Crabbs Branch Way, Rockville, MD | MONTGOMERY | 2407738000 |
License history
| Date | File or call sign | Action |
|---|
| 2020-07-27 | WRDM809 | FRATRE |
| 2020-07-15 | WRDM809 | LETTRS |
| 2020-07-15 | WRDM809 | PNLISR |
| 2020-03-10 | WRDM809 | LETCNS |
| 2019-06-06 | WRDM809 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4167898 | 2026-08-02 01:10:10 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRDM809 | ULS 4167898 | 2026-08-02 01:10:10 |
| Status | A | ULS 4167898 | 2026-08-02 01:10:10 |
| Service | YG | ULS 4167898 | 2026-08-02 01:10:10 |
| Grant Date | 2019-06-06 | ULS 4167898 | 2026-08-02 01:10:10 |
| Expiration Date | 2029-06-06 | ULS 4167898 | 2026-08-02 01:10:10 |