Universal Licensing System
WRJQ310
MainStem LLC
License details
| ULS identifier | 4340846 |
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| Call sign | WRJQ310 |
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| Radio service | RS |
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| Status | E |
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| Grant date | 2020-10-07 |
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| Expiration | 2020-12-13 |
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| Cancellation | 2021-02-13 |
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| Frequency range | 433 MHz |
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| Locations | 1 |
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| Representative location | Rockville, MONTGOMERY, MD |
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| Coordinates | 39.0838056, -77.1477500 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:21:49 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | MR | 433.00000000 | | | 1.000000 | 1.600000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 433.00000000 | | 1M00Q1D |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | Rockville, MONTGOMERY, MD | 39.08380556, -77.14775000 | | | | |
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 | 51 Monroe St, Suite PE-05, Rockville, MD | | 5403167886 |
Special conditions
| Type | Condition code |
|---|
| P | 5004 |
| T | 1003 |
License history
| Date | File or call sign | Action |
|---|
| 2021-02-13 | WRJQ310 | LIEXP |
| 2020-10-07 | WRJQ310 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4340846 | 2026-08-02 01:21:49 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRJQ310 | ULS 4340846 | 2026-08-02 01:21:49 |
| Status | E | ULS 4340846 | 2026-08-02 01:21:49 |
| Service | RS | ULS 4340846 | 2026-08-02 01:21:49 |
| Grant Date | 2020-10-07 | ULS 4340846 | 2026-08-02 01:21:49 |
| Expiration Date | 2020-12-13 | ULS 4340846 | 2026-08-02 01:21:49 |
| Cancellation Date | 2021-02-13 | ULS 4340846 | 2026-08-02 01:21:49 |