Universal Licensing System
WRDU553
MJM Telecom Corp
License details
| ULS identifier | 4182195 |
|---|
| Call sign | WRDU553 |
|---|
| Radio service | MG |
|---|
| Status | A |
|---|
| Grant date | 2019-07-23 |
|---|
| Expiration | 2029-07-23 |
|---|
| Frequency range | 11155 - 11645 MHz (3 frequencies) |
|---|
| Locations | 1 |
|---|
| Coordinates | 33.7185833, -116.9672500 |
|---|
| Source archive | l_micro.zip |
|---|
| Dataset refreshed | 2026-08-02 02:48:21 |
|---|
Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FXO | 11075.00000000 | | | | | |
| 1 | 1 | FXO | 11075.00000000 | | | | | |
| 1 | 1 | FXO | 11075.00000000 | | | | | |
| 1 | 1 | FXO | 11075.00000000 | | | | | |
| 1 | 1 | FXO | 11075.00000000 | | | | | |
| 1 | 1 | FXO | 11075.00000000 | | | | | |
| 1 | 1 | FXO | 11075.00000000 | | | | | |
| 1 | 1 | FXO | 11075.00000000 | | | | | |
| 1 | 1 | FXO | 11075.00000000 | | | | | |
| 1 | 2 | FXO | 11155.00000000 | | | | | |
| 1 | 2 | FXO | 11155.00000000 | | | | | |
| 1 | 2 | FXO | 11155.00000000 | | | | | |
| 1 | 2 | FXO | 11155.00000000 | | | | | |
| 1 | 2 | FXO | 11155.00000000 | | | | | |
| 1 | 2 | FXO | 11155.00000000 | | | | | |
| 1 | 2 | FXO | 11155.00000000 | | | | | |
| 1 | 2 | FXO | 11155.00000000 | | | | | |
| 1 | 2 | FXO | 11155.00000000 | | | | | |
| 1 | 3 | FXO | 11325.00000000 | | | | | |
| 1 | 3 | FXO | 11325.00000000 | | | | | |
| 1 | 3 | FXO | 11325.00000000 | | | | | |
| 1 | 3 | FXO | 11325.00000000 | | | | | |
| 1 | 3 | FXO | 11325.00000000 | | | | | |
| 1 | 3 | FXO | 11325.00000000 | | | | | |
| 1 | 3 | FXO | 11325.00000000 | | | | | |
| 1 | 3 | FXO | 11325.00000000 | | | | | |
| 1 | 3 | FXO | 11325.00000000 | | | | | |
| 1 | 3 | FXO | 11325.00000000 | | | | | |
| 1 | 3 | FXO | 11325.00000000 | | | | | |
| 1 | 3 | FXO | 11645.00000000 | | | | | |
| 1 | 3 | FXO | 11645.00000000 | | | | | |
| 1 | 3 | FXO | 11645.00000000 | | | | | |
| 1 | 3 | FXO | 11645.00000000 | | | | | |
| 1 | 3 | FXO | 11645.00000000 | | | | | |
| 1 | 3 | FXO | 11645.00000000 | | | | | |
| 1 | 3 | FXO | 11645.00000000 | | | | | |
| 1 | 3 | FXO | 11645.00000000 | | | | | |
| 1 | 3 | FXO | 11645.00000000 | | | | | |
| 1 | 3 | FXO | 11645.00000000 | | | | | |
| 1 | 3 | FXO | 11645.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 11075.00000000 | | 80M0D7W |
| 1 | 1 | 11075.00000000 | | 80M0D7W |
| 1 | 1 | 11075.00000000 | | 80M0D7W |
| 1 | 1 | 11075.00000000 | | 80M0D7W |
| 1 | 1 | 11075.00000000 | | 80M0D7W |
| 1 | 1 | 11075.00000000 | | 80M0D7W |
| 1 | 1 | 11075.00000000 | | 80M0D7W |
| 1 | 1 | 11075.00000000 | | 80M0D7W |
| 1 | 1 | 11075.00000000 | | 80M0G7W |
| 1 | 2 | 11155.00000000 | | 80M0D7W |
| 1 | 2 | 11155.00000000 | | 80M0D7W |
| 1 | 2 | 11155.00000000 | | 80M0D7W |
| 1 | 2 | 11155.00000000 | | 80M0D7W |
| 1 | 2 | 11155.00000000 | | 80M0D7W |
| 1 | 2 | 11155.00000000 | | 80M0D7W |
| 1 | 2 | 11155.00000000 | | 80M0D7W |
| 1 | 2 | 11155.00000000 | | 80M0D7W |
| 1 | 2 | 11155.00000000 | | 80M0G7W |
| 1 | 3 | 11325.00000000 | | 80M0G7W |
| 1 | 3 | 11325.00000000 | | 80M0D7W |
| 1 | 3 | 11325.00000000 | | 80M0D7W |
| 1 | 3 | 11325.00000000 | | 80M0D7W |
| 1 | 3 | 11325.00000000 | | 80M0D7W |
| 1 | 3 | 11325.00000000 | | 80M0D7W |
| 1 | 3 | 11325.00000000 | | 80M0D7W |
| 1 | 3 | 11325.00000000 | | 80M0D7W |
| 1 | 3 | 11325.00000000 | | 80M0D7W |
| 1 | 3 | 11325.00000000 | | 80M0D7W |
| 1 | 3 | 11325.00000000 | | 80M0D7W |
| 1 | 3 | 11645.00000000 | | 80M0G7W |
| 1 | 3 | 11645.00000000 | | 80M0D7W |
| 1 | 3 | 11645.00000000 | | 80M0D7W |
| 1 | 3 | 11645.00000000 | | 80M0D7W |
| 1 | 3 | 11645.00000000 | | 80M0D7W |
| 1 | 3 | 11645.00000000 | | 80M0D7W |
| 1 | 3 | 11645.00000000 | | 80M0D7W |
| 1 | 3 | 11645.00000000 | | 80M0D7W |
| 1 | 3 | 11645.00000000 | | 80M0D7W |
| 1 | 3 | 11645.00000000 | | 80M0D7W |
| 1 | 3 | 11645.00000000 | | 80M0D7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | North one-half of the Northwest on-quarter (205063), Helmet, RIVERSIDE, CA | 33.73558333, -117.06333333 | 627.300 m | MTOWER | 25.700 m structure / 26.800 m overall | |
| 2 | R | | 33.70655556, -116.92650000 | 733.600 m | | | |
| 3 | R | | 33.46619444, -117.14169444 | 485.000 m | | | |
| 4 | R | | 33.71858333, -116.96725000 | 505.400 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | Cambium Networks, LTD N110082D072A | | S | 34.7000 | 104.2000 | | |
| 1 | 2 | R | Cambium Networks, LTD N110082D072A | | | 34.7000 | 0.0000 | | |
| 1 | 3 | R | Cambium Networks, LTD N110082D075A | | | 40.7000 | 0.0000 | | |
| 1 | 4 | R | COMMSCOPE VHLP2-11WA | | | 34.7000 | | | |
| 2 | 1 | T | Cambium Networks, LTD N110082D075A | | S | 40.7000 | 193.7000 | | |
| 3 | 1 | T | COMMSCOPE VHLP2-11WA | | S | 34.7000 | 101.9000 | | |
License history
| Date | File or call sign | Action |
|---|
| 2026-07-15 | WRDU553 | PNLISR |
| 2026-07-15 | WRDU553 | LETTRS |
| 2026-03-10 | WRDU553 | LETCNS |
| 2024-12-11 | WRDU553 | LIMOD |
| 2019-07-23 | WRDU553 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4182195 | 2026-08-02 02:48:21 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRDU553 | ULS 4182195 | 2026-08-02 02:48:21 |
| Status | A | ULS 4182195 | 2026-08-02 02:48:21 |
| Service | MG | ULS 4182195 | 2026-08-02 02:48:21 |
| Grant Date | 2019-07-23 | ULS 4182195 | 2026-08-02 02:48:21 |
| Expiration Date | 2029-07-23 | ULS 4182195 | 2026-08-02 02:48:21 |