Universal Licensing System
WRMX421
Minnesota Diversified Products Inc
License details
| ULS identifier | 4461492 |
|---|
| Call sign | WRMX421 |
|---|
| Radio service | IG |
|---|
| Status | A |
|---|
| Grant date | 2021-06-21 |
|---|
| Expiration | 2031-06-21 |
|---|
| Frequency range | 451.825 - 469.7875 MHz (7 frequencies) |
|---|
| Locations | 4 |
|---|
| Representative location | Rockford, HENNEPIN, MN |
|---|
| Coordinates | 45.0776667, -93.7458889 |
|---|
| Source archive | l_LMpriv.zip |
|---|
| Dataset refreshed | 2026-08-02 01:14:14 |
|---|
Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB2 | 451.82500000 | | | 25.000000 | 75.000000 | |
| 2 | 1 | MO | 451.82500000 | | | 4.000000 | 4.000000 | |
| 2 | 1 | MO | 456.82500000 | | | 4.000000 | 4.000000 | |
| 4 | 1 | FX1 | 456.82500000 | | | 4.000000 | 4.000000 | |
| 3 | 1 | MO | 457.25000000 | | | 4.000000 | 4.000000 | |
| 3 | 1 | MO | 466.58750000 | | | 4.000000 | 4.000000 | |
| 3 | 1 | MO | 468.53750000 | | | 4.000000 | 4.000000 | |
| 3 | 1 | MO | 469.61250000 | | | 4.000000 | 4.000000 | |
| 3 | 1 | MO | 469.78750000 | | | 4.000000 | 4.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 451.82500000 | | 7K60FXE |
| 1 | 1 | 451.82500000 | | 11K2F3E |
| 1 | 1 | 451.82500000 | | 7K60FXD |
| 2 | 1 | 451.82500000 | | 7K60FXE |
| 2 | 1 | 451.82500000 | | 11K2F3E |
| 2 | 1 | 451.82500000 | | 7K60FXD |
| 2 | 1 | 456.82500000 | | 11K2F3E |
| 2 | 1 | 456.82500000 | | 7K60FXD |
| 2 | 1 | 456.82500000 | | 7K60FXE |
| 4 | 1 | 456.82500000 | | 7K60FXD |
| 4 | 1 | 456.82500000 | | 7K60FXE |
| 4 | 1 | 456.82500000 | | 11K2F3E |
| 3 | 1 | 457.25000000 | | 11K2F3E |
| 3 | 1 | 457.25000000 | | 7K60FXD |
| 3 | 1 | 457.25000000 | | 7K60FXE |
| 3 | 1 | 466.58750000 | | 11K2F3E |
| 3 | 1 | 466.58750000 | | 7K60FXD |
| 3 | 1 | 466.58750000 | | 7K60FXE |
| 3 | 1 | 468.53750000 | | 7K60FXE |
| 3 | 1 | 468.53750000 | | 7K60FXD |
| 3 | 1 | 468.53750000 | | 11K2F3E |
| 3 | 1 | 469.61250000 | | 7K60FXD |
| 3 | 1 | 469.61250000 | | 11K2F3E |
| 3 | 1 | 469.61250000 | | 7K60FXE |
| 3 | 1 | 469.78750000 | | 7K60FXE |
| 3 | 1 | 469.78750000 | | 7K60FXD |
| 3 | 1 | 469.78750000 | | 11K2F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 9091 County Road 50, Rockford, HENNEPIN, MN | 45.07766667, -93.74588889 | 284.000 m | BTWR | 10.000 m structure / 25.000 m overall | |
| 2 | T | | | | | | |
| 3 | T | Rockford, HENNEPIN, MN | 45.07766667, -93.74588889 | | | | |
| 4 | T | MN | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 25.000 m | | | | 13.700 | |
| 1 | 2 | T | | | | | | | |
| 1 | 3 | T | | | | | | | |
| 1 | 4 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 9091 County Road 50, Rockford, MN | HENNEPIN | 7634775854 |
| 2 | 6901 West Road, Rockford, MN | HENNEPIN | 7634775854 |
License history
| Date | File or call sign | Action |
|---|
| 2021-06-21 | WRMX421 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4461492 | 2026-08-02 01:14:14 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRMX421 | ULS 4461492 | 2026-08-02 01:14:14 |
| Status | A | ULS 4461492 | 2026-08-02 01:14:14 |
| Service | IG | ULS 4461492 | 2026-08-02 01:14:14 |
| Grant Date | 2021-06-21 | ULS 4461492 | 2026-08-02 01:14:14 |
| Expiration Date | 2031-06-21 | ULS 4461492 | 2026-08-02 01:14:14 |