Universal Licensing System
WRTY421
BOB, LLC
License details
| ULS identifier | 4643636 |
|---|
| Call sign | WRTY421 |
|---|
| Radio service | CF |
|---|
| Status | A |
|---|
| Grant date | 2022-07-28 |
|---|
| Expiration | 2032-07-28 |
|---|
| Frequency range | 23475 MHz |
|---|
| Locations | 2 |
|---|
| Representative location | Cambridge, MIDDLESEX, MA |
|---|
| Coordinates | 42.3643056, -71.0792222 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:47:08 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FXO | 23475.00000000 | | | | | |
| 1 | 1 | FXO | 23475.00000000 | | | | | |
| 1 | 1 | FXO | 23475.00000000 | | | | | |
| 1 | 1 | FXO | 23475.00000000 | | | | | |
| 1 | 1 | FXO | 23475.00000000 | | | | | |
| 1 | 1 | FXO | 23475.00000000 | | | | | |
| 1 | 1 | FXO | 23475.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 23475.00000000 | | 47M3D7W |
| 1 | 1 | 23475.00000000 | | 47M3D7W |
| 1 | 1 | 23475.00000000 | | 47M3D7W |
| 1 | 1 | 23475.00000000 | | 47M3D7W |
| 1 | 1 | 23475.00000000 | | 47M3D7W |
| 1 | 1 | 23475.00000000 | | 47M3D7W |
| 1 | 1 | 23475.00000000 | | 47M3D7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 215 First St, Cambridge, MIDDLESEX, MA | 42.36430556, -71.07922222 | 1.000 m | B | 20.000 m structure / 22.000 m overall | |
| 2 | R | | 42.35611111, -71.05833333 | 7.000 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | RF Engineering & Energy R RFMA-2341UH06WS03 | | V | 40.6000 | 117.9000 | | |
| 1 | 2 | R | RF Engineering & Energy R RFMA-2336UH03S | | | 35.3000 | 0.0000 | | |
License history
| Date | File or call sign | Action |
|---|
| 2025-08-04 | WRTY421 | LITRAN |
| 2025-08-01 | WRTY421 | LITRAN |
| 2025-04-23 | WRTY421 | LITRAN |
| 2024-05-11 | WRTY421 | LIAUA |
| 2023-10-31 | WRTY421 | LETCNS |
| 2022-07-28 | WRTY421 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4643636 | 2026-08-02 02:47:08 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRTY421 | ULS 4643636 | 2026-08-02 02:47:08 |
| Status | A | ULS 4643636 | 2026-08-02 02:47:08 |
| Service | CF | ULS 4643636 | 2026-08-02 02:47:08 |
| Grant Date | 2022-07-28 | ULS 4643636 | 2026-08-02 02:47:08 |
| Expiration Date | 2032-07-28 | ULS 4643636 | 2026-08-02 02:47:08 |